AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 25, 1997
                                                      Registration No. 333-_____

                             --------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                           REGISTRATION STATEMENT ON
                                    FORM S-4
                                     Under
                           The Securities Act of 1933

                             --------------------

                           UNISOURCE WORLDWIDE, INC.

                                                                         
Delaware                                      5111                            13-5369500
(State or other jurisdiction of   (Primary Standard Industrial     (I.R.S. Employer Identification No.)
incorporation or organization)     Classification Code Number)
 



                               825 Duportail Road
                         Wayne, Pennsylvania 19087-5589
                                 (610) 296-4470



            RAY B.  MUNDT                          Copies to:
 Chairman and Chief Executive Officer      HOWARD L.  SHECTER, ESQUIRE
      Unisource Worldwide, Inc.            Morgan, Lewis & Bockius LLP
          825 Duportail Road                  2000 One Logan Square
    Wayne, Pennsylvania 19087-5589         Philadelphia, PA 19103-6993
            (610) 296-4470                       (215) 963-5442

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time
to time after the Registration Statement becomes effective.

                             --------------------

     If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]

                             --------------------

                        CALCULATION OF REGISTRATION FEE



                                          PROPOSED MAXIMUM      PROPOSED MAXIMUM   
 TITLE OF SECURITIES      AMOUNT TO BE   OFFERING PRICE PER    AGGREGATE OFFERING       AMOUNT OF   
 TO BE REGISTERED         REGISTERED            UNIT*                PRICE          REGISTRATION FEE 
- -------------------------------------------------------------------------------------------------
                                                                    
Common stock $0.001        5,000,000              $14.375          $71,875,000         $21,780.30
 par value per share
- -------------------------------------------------------------------------------------------------


     *  Estimated solely for the purpose of determining the registration fee
pursuant to Rule 457(c).

    **  This Registration Statement also relates to an indeterminate number of
shares of Common Stock that may be issued to prevent dilution resulting from
stock splits, stock dividends or similar transactions in accordance with Rule
416.

     The registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the registrant shall
file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until this Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

 
                           UNISOURCE WORLDWIDE, INC.

               Cross-Reference Sheet showing the location in the Prospectus of
     information required to be included in the Prospectus pursuant to Item
     501(b) of Regulation S-K.


 
Item Number and Caption                                  Location in Prospectus
- -----------------------                                  ----------------------
                                                      
A.  Information about the Transaction
    1.  Forepart of Registration Statement and           Facing Page of Form S-4; This Cross-Reference
        Outside Front Cover Page of Prospectus           Sheet;
                                                         Outside Front Cover Page of Prospectus

    2.  Inside Front and Outside Back Cover Pages of     Available Information; The Company
        Prospectus

    3.  Risk Factors, Ratio of Earnings to Fixed         Outside Front Cover Page of Prospectus; The
        Charges and Other Information                    Company; Risk Factors; Selected Financial
                                                         Information

    4.  Terms of the Transaction                         Outside Front Cover Page of Prospectus; Securities
                                                         Covered by this Prospectus; Plan of Distribution

    5.  Pro Forma Financial Information                            *

    6.  Material Contracts With the Company Being                  *
        Acquired

    7.  Additional Information Required For              Resales
        Reoffering by Persons and Parties Deemed To
        Be Underwriters

    8.  Interests of Named Experts and Counsel           Experts; Legal Matters

    9.  Disclosure of Commission Position on                       *
        Indemnification for Securities Act Liabilities

B.  Information about the Registrant
  
   10.  Information with Respect to S-3 Registrants      The Company

   11.  Incorporation of Certain Information by          The Company; Documents Incorporated by Reference
        reference

   12.  Information With Respect to S-2 or S-3           Documents Incorporated by Reference
        Registrants

   13.  Incorporation of Certain Information by          Documents Incorporated by Reference
        Reference

   14.  Information With Respect to Registrants                    *
        Other Than S-2 or S-3 Registrants

C. Information about the Company Being Acquired

   15.  Information With Respect to S-3 Companies                  *

   16.  Information With Respect to S-2 or S-3
        Companies                                                  *
 
   17.  Information With Respect to Companies
        Other Than S-2 or S-3 Companies                            *
 
 


                                       i

 



Item Number and Caption                                Location in Prospectus
- -----------------------                                ----------------------
                                                    
D.  Voting and Management Information
    18.  Information if Proxies, Consents or                        *
         Authorization Are To Be Solicited

    19.  Information if Proxies, Consents or                        *
         Authorizations Are Not To Be Solicited in or
         in an Exchange Offer


     _____________
     *  Not applicable.

                                       ii

 
     PROSPECTUS

                                5,000,000 SHARES

                           UNISOURCE WORLDWIDE, INC.
                                     [LOGO]
                                  COMMON STOCK

          This Prospectus relates to the offer and sale from time to time by
     Unisource Worldwide, Inc., a Delaware corporation ("Unisource" or the
     "Company"), or its subsidiaries of 5,000,000 shares of Unisource's common
     stock, par value $0.001 per share (the "Common Stock"), to be issued
     directly or indirectly in exchange for shares of capital stock of other
     companies, or in exchange for assets used in or related to the business of
     such companies.  See "Securities Covered by This Prospectus." Common Stock
     offered hereby may generally be resold by the persons acquiring such shares
     without further registration under the Securities Act of 1933, as amended
     (the"Act").  For further information on resales, see "RESALES" in this
     Prospectus.

          The Common Stock is listed and traded on the New York, Philadelphia
     and Chicago Stock Exchanges under the symbol "UWW."
                                _______________

          THE COMMON STOCK OFFERED HEREBY INVOLVES CERTAIN RISKS.  SEE "RISK
     FACTORS" COMMENCING ON PAGE 4.
                                 ______________

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR
     HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
     COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY
     REPRESENTATIONS TO THE CONTRARY IS A CRIMINAL OFFENSE.

          NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
     INFORMATION OR TO MAKE ANY REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS
     AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE
     RELIED UPON AS HAVING BEEN AUTHORIZED BY UNISOURCE.  NEITHER THE PROSPECTUS
     NOR ANY PROSPECTUS SUPPLEMENT CONSTITUTES AN OFFER TO SELL OR THE
     SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN
     ANY JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER IN
     SUCH JURISDICTION.  NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
     PROSPECTUS SUPPLEMENT NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY
     CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS NOT BEEN ANY CHANGE IN
     THE FACTS SET FORTH OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS OR ANY
     PROSPECTUS SUPPLEMENT OR IN THE AFFAIRS OF UNISOURCE SINCE SUCH DATE.

                 The date of this Prospectus is April 25, 1997.

                                       1

 
                                  THE COMPANY

          Unisource is the largest marketer and distributor of quality paper
     products in North America. Unisource also is a leading North American
     distributor of paper and plastic shipping and food service supplies,
     sanitary maintenance supplies and equipment and packaging supplies and
     equipment.  Unisource has extensive distribution facilities located
     throughout the United States, Canada and Mexico.

          Unisource serves a broad customer base by marketing and distributing
     products and equipment that are manufactured by third parties.  The Company
     distributes these products through its two principal businesses:  a
     business which markets and distributes quality papers to printers,
     publishers and corporate imaging customers ("Printing and Imaging"); and a
     business which distributes a wide range of paper and plastic shipping and
     food service supplies, sanitary maintenance supplies and equipment and
     packaging equipment and supplies, principally to manufacturers, food
     processors and grocery stores (collectively, "Supply Systems").

          For the fiscal year ended September 30, 1996 ("fiscal 1996"),
     Unisource generated approximately $7 billion in revenues and $184 million
     in operating income, excluding a $50 million restructuring charge.  In
     fiscal 1996, the Company's Printing and Imaging business accounted for
     approximately 68% of total Company revenues and the Supply Systems business
     accounted for approximately 32% of total Company revenues.

          The address of Unisource's principal executive offices is 825
     Duportail Road, Wayne, Pennsylvania 19087-5589.

                             AVAILABLE INFORMATION

          Unisource is subject to the informational requirements of the
     Securities Exchange Act of 1934 (the "1934 Act") and in accordance
     therewith files reports, proxy statements and other information with the
     Securities and Exchange Commission (the "Commission").  Such reports, proxy
     statements and other information filed by Unisource with the Commission can
     be inspected and copied at the offices of the Commission at Room 1024,
     Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20547 and at the
     following Regional Offices of the Commission: Northeast Regional Office, 7
     World Trade Center, New York, New York 10048; and Midwest Regional Office,
     Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois
     60621. Copies of such material can also be obtained from the Public
     Reference Section of the Commission at Room 1024, Judiciary Plaza, 450
     Fifth Street, N.W., Washington, D.C. 20549 at prescribed rates.  Such
     material can also be inspected at the New York, Philadelphia, and Chicago
     Stock Exchanges on which Unisource's Common Stock is listed.  THIS
     PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH ARE NOT PRESENTED
     HEREIN OR DELIVERED HEREWITH.  THESE DOCUMENTS ARE AVAILABLE UPON REQUEST
     FROM MARTHA BUCKLEY, UNISOURCE INVESTOR RELATIONS DEPARTMENT, 825 DUPORTAIL
     ROAD, WAYNE, PENNSYLVANIA 19087-5589, (610) 993-3609.

                                       2

 
          Unisource has filed with the Commission a Registration Statement on
     Form S-4 (together with all amendments and exhibits thereto, the
     "Registration Statement") under the Act with respect to the securities to
     which this Prospectus relates.  This Prospectus does not contain all of the
     information set forth in the Registration Statement, certain parts of which
     are omitted in accordance with the rules and regulations of the Commission.
     For further information with respect to Unisource and such securities,
     reference is made to the Registration Statement, which may be examined or
     copied at the offices of the Commission.  Statements contained in this
     Prospectus as to the contents of any contract or any other document filed,
     or incorporated by reference, as an exhibit to the Registration Statement,
     are qualified in all respects by such reference.

                      DOCUMENTS INCORPORATED BY REFERENCE

          The following documents are incorporated by reference herein:

          1)  Unisource's registration statement on Form 10 dated November 26,
     1996 under the 1934 Act (the "1934 Act Registration Statement");

          2)  Unisource's Current Report on Form 8-K, dated March 19, 1997;

          3)  Unisource's Current Report on Form 8-K, dated April 15, 1997;

          4)  Unisource's Quarterly Report on Form 10-Q for the period ended
     December 31, 1996; and

          5)  Unisource's registration statement on Form 8-A, relating to
     Unisource's preferred share purchase rights.

          All documents filed by Unisource pursuant to Sections 13(a), 13(c),
     14, or 15(d) of the 1934 Act subsequent to the date of this Prospectus and
     prior to the termination of the offering of the Common Stock shall be
     deemed to be incorporated by reference in this Prospectus and to be a part
     hereof from the date of filing of such documents.  This Prospectus does not
     contain all information set forth in the Registration Statement and
     exhibits thereto which Unisource has filed with the Commission and to which
     reference is made hereby.

          Unisource will provide without charge to each person, including any
     beneficial owner to whom a copy of this Prospectus is delivered, on the
     written or oral request of any such person, a copy of any or all of the
     documents referred to above which have been incorporated in this Prospectus
     by reference, other than exhibits to such documents (unless such exhibits
     are specifically incorporated by reference in such documents).  Requests
     for such copies should be directed to: Martha Buckley, Unisource Investor
     Relations Department, 825 Duportail Road, Wayne, Pennsylvania 19087-5589,
     (610) 993-3609.

                                       3

 
                     SECURITIES COVERED BY THIS PROSPECTUS

          The shares of Common Stock covered by this Prospectus are available
     for use in future acquisitions of other businesses or properties, which may
     be similar or dissimilar to Unisource's present activities.  The
     consideration offered by Unisource in such acquisitions, in addition to the
     shares of Common Stock offered hereby, may include cash, debt or other
     securities (which may be convertible into shares of Common Stock covered by
     this Prospectus), or assumption by Unisource of liabilities of the business
     being acquired, or a combination thereof.  It is contemplated that the
     terms of acquisitions will be determined by negotiations between Unisource
     and the owners and/or management of the business or properties to be
     acquired, with Unisource taking into account the quality of management, the
     past and potential earnings power and growth of the business or properties
     to be acquired, and other relevant facts, and it is anticipated that shares
     of Common Stock issued in acquisitions will be valued at a price reasonably
     related to the market value of the Common Stock either at the time the
     terms of the acquisition are tentatively agreed upon or at or about the
     time or times of delivery of the shares.

                                  RISK FACTORS

          Prior to making an investment decision, prospective purchasers should
     consider carefully, in addition to other information contained in the
     Prospectus, the following risk factors.

     COMPETITION

          The Company's Printing and Imaging and Supply Systems businesses
     operate within highly competitive markets.  Unisource's Printing and
     Imaging competitors consist of the distribution units of large paper
     manufacturers (e.g., International Paper's ResourceNet, Mead Corporation's
     Zellerbach and Champion International's Nationwide Paper) and independent
     distributors.  While Unisource is the largest distributor in this market,
     certain Printing and Imaging competitors, principally the distribution
     units of large paper manufacturers, may have greater total financial,
     purchasing and/or sourcing power than Unisource.  In the more fragmented
     Supply Systems business, Unisource competes with a large number of local
     and regional distributors, as well as larger companies, including
     ResourceNet and Zellerbach.  The Company believes that the principal
     competitive factors in these markets include responsiveness to customer
     needs, price, quality of customer service and the range of products
     maintained in inventory.  The Company is responding to such competitive
     conditions by bundling products and services in order to meet all
     customers' Printing and Imaging and Supply Systems needs and by using its
     extensive distribution capabilities to attract national accounts which
     provide consistent and profitable revenue streams.

                                       4

 
     QUARTERLY FLUCTUATIONS IN OPERATING RESULTS; SENSITIVITY TO PAPER PRICES

          The Company has experienced fluctuations in revenues and net income
     from quarter to quarter due to a combination of factors, including
     volatility in pulp and paper prices (which may also affect demand for
     Printing and Imaging products), the timing and magnitude of acquisitions
     and the implementation of the Company's restructuring program.  The
     Printing and Imaging business, which accounted for $4.8 billion (68%) and
     $666 million (59%) of the Company's revenues and gross profit,
     respectively, during fiscal 1996, can be significantly impacted by
     volatility in pulp and paper prices.  In fiscal 1995, average prices for
     Printing and Imaging products sold by the Company increased by more than
     24% over average fiscal 1994 levels.  By September 30, 1996, prices for
     those same products declined by more than 16% compared to prices at fiscal
     1995 year-end.  For the three-year period ended September 30, 1996, paper
     prices for uncoated cut size (copy) and coated papers (the two greatest
     volume categories for the Company) ranged from $670 to $1,160 per ton and
     $1,175 to $1,500 per ton, respectively. Volatility in pulp and paper prices
     may alter purchasing patterns and cause customers to defer paper purchases
     and/or deplete inventory levels until long-term price stability occurs.  In
     general, rising paper prices favorably impact the Company through the
     generation of higher gross trading margins.  This is particularly true when
     market conditions allow the Company to quickly pass along increased
     supplier costs to customers and maintain its gross trading margin
     percentage. When such percentage is maintained over a higher revenue base
     that is brought about by increased prices, results are favorably impacted.
     With the exception of increased sales commission expense, which is based
     upon gross trading margins, and is the only significant expense item that
     varies directly with changing paper prices, increases in paper prices do
     not carry a proportionate increase in operating expenses.  Declining paper
     prices negatively impact the Company even when Unisource maintains its
     gross trading margin percentage and volumes because constant volumes and
     trading margin percentages in a declining price environment will produce
     lower revenues and gross trading margins, in absolute terms, and Unisource
     also has certain fixed expenses which impact results regardless of changes
     in paper prices.  Although the Company does not produce paper products and
     is not directly exposed to the production and raw materials risks
     associated therewith, industry overcapacity and overproduction by paper
     suppliers also could adversely affect the Company's revenues and net income
     if such factors produce lower paper prices.  In addition, while the Company
     has been successful in ultimately passing on the effects of price
     increases, there is sometimes a short lag from the time prices are
     increased by producers until the Company is able to effectively pass along
     such increased costs to its customers.

     DELAY IN IMPLEMENTING INFORMATION TECHNOLOGY SYSTEM

          The Company began an ambitious restructuring program in late fiscal
     1993 and has made significant investments in the design, testing and
     implementation of a new information technology system.  The implementation
     of the system, which was originally scheduled to begin in 1995, has been
     delayed to allow for additional enhancements to the system and to better
     prepare field operations for installation. Implementation is now expected
     to be completed by the end of fiscal 1999.  While information technology
     systems currently in use are adequate to support the Company's current
     operations, such systems will not enable the Company to achieve

                                       5

 
     its current business strategies to realize cost savings through streamlined
     operating and financial functions, increase responsiveness to customers and
     enhance distribution efficiency.  Any significant further delay in
     implementing this program or any significant difficulties in realizing the
     anticipated benefits of such program would delay the Company's ability to
     successfully implement its business strategies and could adversely impact
     the Company's operations and future financial results and condition.

     CERTAIN ANTITAKEOVER PROVISIONS

          The Company's Certificate of Incorporation, By-laws and Stockholder
     Rights Plan and the General Corporation Law of the State of Delaware may
     have the effect, either alone or in combination with each other, of making
     more difficult or discouraging a tender offer, change in control or
     takeover attempt that is opposed by the Company's Board of Directors.  See
     "Description of Capital Stock -  Unisource Common Stock; Delaware
     Antitakeover Provisions," "--Preferred Stock," "--Certain Antitakeover
     Provisions - Unisource Certificate and By-Laws" and "--Stockholder Rights
     Plan."  In addition, provisions in the Company's Tax Sharing Agreement with
     Alco Standard Corporation could have the effect of discouraging or making
     more expensive certain takeover proposals.


                          FORWARD-LOOKING INFORMATION

          This Prospectus contains, and other materials filed or to be filed by
     the Company with the Commission which are incorporated by reference herein,
     as well as information included in oral statements or other written
     statements made or to be made by the Company, contain or will contain or
     include, disclosures which are forward-looking statements within the
     meaning of Section 27A of the Act and Section 21E of the 1934Act.  Such
     forward-looking statements address, among other things, strategic
     initiatives (including plans for transforming the Company's business
     through new information technology systems, sales strategies, market growth
     plans and acquisition and margin enhancement initiatives, capital
     expenditure requirements and financing sources) and anticipated results of
     operations.  See "Management's Discussion and Analysis of Financial
     Condition and Results of Operations," "Business-Strategy," "--Acquisitions"
     and "--Business Transformation and Information Technology System" in the
     1934 Act Registration Statement.  Such forward-looking information is based
     upon management's current plans or expectations and is subject to a number
     of uncertainties and risks that could significantly affect current plans,
     anticipated actions and the Company's future financial condition and
     results.  These uncertainties and risks include, but are not limited to,
     those relating to conducting operations in a competitive environment;
     delays, difficulties and technological changes associated with a large-
     scale systems transformation project; acquisition activities (including
     uncertainties associated with projecting the use of Common Stock as
     acquisition currency when there has been no historic trading market for
     such stock and projecting future cash flows to finance cash-based
     acquisitions); debt service requirements (including sensitivity to
     fluctuation in interest rates); general economic conditions; and changes or
     volatility in paper prices.  As a consequence, current plans, anticipated
     actions

                                       6

 
     and future financial condition and results may differ from those expressed
     in any forward-looking statements made by or on behalf of the Company.

                              PLAN OF DISTRIBUTION

          Shares of Common Stock will be offered in connection with Unisource's
     or a subsidiary's acquisition of other businesses or properties from time
     to time as described above.  A maximum of 5,000,000 shares of Common Stock
     may be sold pursuant to this Prospectus.  These shares will ordinarily
     represent consideration paid directly upon the acquisition of businesses or
     properties.  The shares may also include shares to be delivered upon the
     exercise or satisfaction of conversion or purchase rights which are created
     in connection with acquisitions or which were previously created or assumed
     by the companies whose businesses or properties were acquired.

                                    RESALES

          Common Stock offered hereby may generally be resold by the persons
     acquiring such shares without further registration under the Act, unless
     such persons are "affiliates" or "underwriters" within the meaning of the
     Act.

          Any person receiving shares offered hereby who is an "affiliate" of
     Unisource may be subject to certain limitations on resale.  An "affiliate"
     is a person who directly, or indirectly through one or more intermediaries,
     controls, or is controlled by, or is under common control with the Company.
     "Control," as used in the preceding sentence, means the direct or indirect
     power to direct or cause the direction of the management and policies of
     the Company through ownership of voting securities, contract or otherwise.
     In the absence of a special relationship between Unisource  and a person
     who receives shares from Unisource in an acquisition transaction (such as
     election of such person to Unisource's board of directors or ownership by
     such person of a significant percentage of Unisource's outstanding Common
     Stock), such a person generally would not be considered an "affiliate" of
     Unisource within the meaning of the Act.  Therefore, the limitations on
     resale applicable to affiliates would not apply to such person.

          Any person receiving shares offered hereby who is an "underwriter" of
     Unisource may also be subject to certain limitations upon resale.  An
     "underwriter" includes a person who purchases Unisource shares with a view
     to the distribution of such shares.  Although an "underwriter" may
     otherwise be subject to certain resale limitations, if such person complies
     with the "safe harbor" provisions of rule 145(d), he or she may freely
     resell shares so long as certain conditions are met.  For example, a person
     who receives shares of Common Stock from Unisource in a typical acquisition
     transaction is deemed to be an "underwriter" as defined by the Act, but
     such person is generally free to sell such shares at any time by complying
     with rule 145(d), which requires that the amount of Common Stock which may
     be sold by such person in any three-month period may not exceed the greater
     of (i) 1% of the Common Stock outstanding as shown by the most recent
     report or statement published by Unisource, or (ii) the average weekly
     trading volume in Common Stock reported on the NYSE Composite tape during
     the four calendar weeks preceding the order to sell.  Such sales must also
     be made in "brokers'

                                       7

 
     transactions," which are ordinary sales through a broker acting as agent
     without special commission arrangements or selling efforts.

          In order for affiliates or underwriters not protected by Rule 145(d)
     to resell shares offered hereby, Unisource would have to agree 1) to
     provide an opinion to the effect that an exemption applies to such resale,
     2) to amend the Registration Statement of which this Prospectus is a part
     to permit such resales, or 3) to file a new registration statement which
     includes the shares proposed to be resold.  Unless a written agreement
     obligates Unisource to do so, there is no assurance that Unisource will
     agree to provide such opinion, amendment or registration.

                                USE OF PROCEEDS

          The Common Stock offered hereby will be issued directly or indirectly
     in exchange for shares of capital stock of other companies, or in exchange
     for assets used in or related to the business of such companies. The
     proceeds of the sale of Common Stock offered hereby, to the extent such
     proceeds consist of the assets of acquired businesses, will be added to the
     assets of Unisource or a subsidiary.  Cash proceeds, if any, representing
     part of the assets of acquired businesses, will be added to the general
     funds of Unisource or a subsidiary and may be used for general corporate
     purposes, including capital expenditures and working capital requirements.

                                       8

 
                            SELECTED FINANCIAL DATA


          The following table summarizes certain selected historical financial
     information of Unisource that has been derived from the audited financial
     statements of Unisource for each of the five years in the period ended
     September 30, 1996.  The historical financial information may not be
     indicative of Unisource's future performance as a stand-alone company.  The
     financial data for the three month periods ended December 31, 1995 and 1996
     are derived from unaudited financial statements.  The unaudited financial
     statements include all adjustments, consisting of normal recurring
     accruals, which Unisource considers necessary for a fair presentation of
     the financial position and the results of operations for these periods.
     Operating results for the three months ended December 31, 1996 are not
     necessarily indicative of the results that may be expected for the entire
     year ending September 30, 1997.  The information set forth below should be
     read in conjunction with "Management's Discussion and Analysis of Financial
     Condition and Results of Operations" and Unisource's Consolidated Financial
     Statements and notes thereto included in the 1934 Act Registration
     Statement. Per share data has not been presented for any periods other than
     December 31, 1996, because Unisource was a wholly-owned subsidiary of Alco
     Standard Corporation during the periods presented and was recapitalized
     prior to the year ended September 30, 1996. 


 

                                                                                        Three Months Ended
                                                 Year Ended September 30,                  December 31,
- --------------------------------------------------------------------------------------  ------------------
(in millions except for Earnings       1992      1993       1994      1995      1996      1995      1996
 per share)                          --------  ---------  --------  --------  --------  --------  --------
                                                                                   
Revenues.......................      $3,667.9  $4,864.1   $5,756.5  $6,987.3  $7,022.8  $1,716.2  $1,728.5
Costs and expenses:
Cost of goods sold.............       3,079.5   4,077.1    4,825.7   5,925.2   5,896.2   1,446.7   1,428.4
Selling and administrative.....         475.7     661.0      782.3     855.8     942.1     219.3     255.0
Restructuring charge...........            --     175.0         --        --      50.0        --        --
                                     --------  --------   --------  --------  --------  --------  --------
                                      3,555.2   4,913.1    5,608.0   6,781.0   6,888.3   1,666.0   1,683.4
                                     --------  --------   --------  --------  --------  --------  --------
Income (loss) from operations...        112.7     (49.0)     148.5     206.3     134.5      50.2      45.1
Interest expense................         20.0      23.8       26.2      33.6      31.5       6.9      10.4
                                     --------  --------   --------  --------  --------  --------  --------
Income (loss) before income          
 taxes and cumulative effect of
 accounting change..............         92.7     (72.8)     122.3     172.7     103.0      43.3      34.7
Provision (benefit) for income                                                                               
 taxes..........................         36.7      (7.7)      47.8      67.5      43.0      17.1      14.5   
                                     --------  --------   --------  --------  --------  --------  --------    
Income (loss) before cumulative                                                                               
 effect of accounting change....         56.0     (65.1)      74.5     105.2      60.0      26.2      20.2   
Cumulative effect of                                                                                         
 change in method of                 
 accounting for income taxes....           --        --       14.0        --        --        --        --   
                                     --------  --------   --------  --------  --------  --------  --------   
Net income (loss)...............     $   56.0  $  (65.1)  $   88.5  $  105.2  $   60.0  $   26.2  $   20.2
                                     ========  ========   ========  ========  ========  ========  ========
Earnings per share..............                                                                  $    .30
                                                                                                  ======== 
 
Capital expenditures............     $   20.2  $   21.7   $   33.9  $   50.1  $   35.8  $   10.6  $    7.7
Depreciation and                     
  amortization..................         20.6      28.7       32.5      33.4      40.0       8.8      11.7 
Working capital.................        310.4     551.0      549.8     815.1     750.8     888.7     797.7
Total assets....................      1,284.4   1,633.9    1,720.0   2,019.0   2,191.7   1,935.0   2,191.9
Long-term debt, including                                                                                  
 current portion................         30.5      29.5       26.8      25.5      21.9      50.6     599.6 
Total stockholder's equity......        372.5     280.3      353.5     415.9     935.5     443.0     952.3
 


                                       9

 
                          DESCRIPTION OF CAPITAL STOCK

               The authorized capital stock of Unisource consists of 250 million
     shares of Unisource Common Stock, par value $0.001 per share, and 10
     million shares of Preferred Stock, par value $0.001 per share (the
     "Preferred Stock").

     UNISOURCE COMMON STOCK; DELAWARE ANTITAKEOVER PROVISIONS

               Holders of shares of Unisource Common Stock are entitled to one
     vote per share on all matters to be voted upon by the stockholders and are
     not entitled to cumulate votes for the election of directors. Subject to
     preferences that may be applicable to any outstanding Preferred Stock,
     holders of shares of Unisource Common Stock are entitled to receive ratably
     such dividends, if any, as may be declared from time to time by the
     Unisource Board of Directors out of funds legally available therefor.  In
     the event of liquidation, dissolution or winding up of Unisource, the
     holders of shares of Unisource Common Stock are entitled to share ratably
     in all assets remaining after payment of liabilities, subject to prior
     distribution rights of Preferred Stock, if any, then outstanding.  Holders
     of Unisource Common Stock have no preemptive, conversion or other
     subscription rights and there are no redemption or sinking fund provisions
     applicable to the Unisource Common Stock.

               Unisource is subject to the provisions of Section 203 of the
     Delaware General Corporation Law ("DGCL").  Subject to certain exceptions,
     Section 203 of the DGCL prohibits a publicly-held Delaware corporation from
     engaging in a "business combination" with an "interested stockholder" for a
     period of three years after the date of the transaction in which the person
     became an interested stockholder. Subject to certain exceptions, an
     "interested stockholder" is a person who, together with affiliates and
     associates, owns, or within three years did own, 15% or more of the
     corporation's voting stock.  A "business combination" includes a merger,
     consolidation, sale or other disposition of assets having an aggregate
     value in excess of 10% of either the aggregate market value of the
     consolidated assets of the corporation or the aggregate market value of all
     the outstanding stock of the corporation, and certain transactions that
     would increase the interested stockholder's proportionate share ownership
     in the corporation or which provide the interested stockholder with a
     financial benefit.  These restrictions do not apply where (i) the business
     combination or the transaction in which the stockholder becomes interested
     is approved by the corporation's board of directors prior to the date the
     interested stockholder acquired its shares, (ii) the interested stockholder
     acquired at least 85% of the outstanding voting stock of the corporation in
     the transaction in which the stockholder became an interested stockholder
     excluding, for determining the number of shares outstanding, shares owned
     by persons who are directors as well as officers and by employee stock
     plans in which participants do not have the right to determine
     confidentially whether shares held subject to the plan will be tendered in
     a tender or exchange offer, or (iii) the business combination is approved
     by the board of directors and the affirmative vote of two-thirds of the
     outstanding voting stock not owned by the interested stockholder at an
     annual or special meeting.  The business combinations provisions of Section
     203 of the DGCL may have the effect of deterring merger proposals, tender
     offers or other attempts to effect changes in control of the Company that
     are not negotiated with and approved by the Board of Directors.

     PREFERRED STOCK

                                       10

 
               The Amended and Restated Certificate of Incorporation of
     Unisource (the "Unisource Certificate") provides that Unisource may issue
     up to 10 million shares of Preferred Stock.  The Unisource Board of
     Directors has the authority to issue Preferred Stock in one or more series
     and to fix the rights, preferences, privileges and restrictions, including
     the dividend, conversion, voting, redemption (including sinking fund
     provisions), and other rights, liquidation preferences, and the number of
     shares constituting any series and the designations of such series, without
     any further vote or action by the stockholders of Unisource.  Because the
     terms of the Preferred Stock may be fixed by the Unisource Board without
     stockholder action, the Preferred Stock could be issued quickly with terms
     calculated to defeat a proposed takeover of Unisource or to make the
     removal of management of Unisource more difficult.  Under certain
     circumstances this could have the effect of decreasing the market price of
     the Unisource Common Stock.  The Company has authorized a class of series
     Preferred Stock in connection with the authorization of its Stockholder
     Rights Plan.  See "-Stockholder Rights Plan."

     CERTAIN ANTITAKEOVER PROVISIONS - UNISOURCE CERTIFICATE AND BY-LAWS

               Certain provisions of the Unisource Certificate and By-laws may
     have the effect, either alone or in combination with each other, of making
     more difficult or discouraging a tender offer, takeover attempt or change
     in control that is opposed by Unisource's Board of Directors but that a
     stockholder might consider to be in its best interest.  The Company
     believes that such provisions are necessary to enable the Company to
     develop its business in a manner that will foster its long-term growth
     without disruption caused by the threat of a takeover not deemed by the
     Board of Directors to be in the best interests of the Company and its
     stockholders.  These provisions are summarized in the following paragraphs.

               Classified Board of Directors.  The Unisource Certificate and By-
     laws provide for the division of the Board  into three classes of
     directors, with the classes to be as nearly equal in number as possible.
     The Certificate and By-laws provide that of the initial directors of the
     Company, one-third will continue to serve until the Annual Meeting of
     Stockholders next held after September 30, 1997, one-third will continue to
     serve until the Annual Meeting of Stockholders next held after September
     30, 1998, and one-third will continue to serve until the Annual Meeting of
     Stockholders next held after September 30, 1999.

               The classification of directors will have the effect of making it
     more difficult for stockholders to change the composition of the Board of
     Directors.  At least two annual meetings of stockholders, instead of one,
     will generally be required to effect a change in a majority of the Board of
     Directors.  Such a delay may help ensure that the Company's directors, if
     confronted by a holder attempting to force a proxy contest, a tender or
     exchange offer, or an extraordinary corporate transaction, would have
     sufficient time to review the proposal as well as any available
     alternatives to the proposal and to act in what they believe to be the best
     interest of the stockholders.  The classification provisions will apply to
     every election of directors, however, regardless of whether a change in the
     composition of the Board would be beneficial to the Company and its
     stockholders and whether or not a majority of the Company's stockholders
     believe that such a change would be desirable.

               The classification provisions could also have the effect of
     discouraging a third party from initiating a proxy contest, making a tender
     offer or otherwise attempting to obtain control of the Company, even though
     such an attempt might be beneficial to the Company and its stockholders.
     The classification of

                                       11

 
     the Board could thus increase the likelihood that incumbent directors will
     retain their positions.  In addition, because the classification provisions
     may discourage accumulations of large blocks of the Company's stock by
     purchasers whose objective is to take control of the Company and remove a
     majority of the Board, the classification of the Board could tend to reduce
     the likelihood of fluctuations in the market price of the Company Common
     Stock that might result from accumulations of large blocks for such a
     purpose.  Accordingly, stockholders could be deprived of certain
     opportunities to sell their shares of Company Common Stock at a higher
     market price than might otherwise be the case.

               Number of Directors; Removal of Directors; Vacancies.  The By-
     laws provide that the number of directors of Unisource shall be a number
     between six and seventeen which shall be fixed by resolution adopted by
     either (i) a majority of the entire Board of Directors or (ii) the
     affirmative vote of the holders of at least 66 2/3% of the voting power of
     all of the shares of Unisource entitled to vote generally in the election
     of directors voting together as a single class.

               The Unisource Certificate and By-laws also provide that, subject
     to the rights of holders of any Preferred Stock then outstanding and any
     requirements of law, directors may be removed only for cause by the
     affirmative vote of the holders of at least 66 2/3% of the outstanding
     shares of Unisource then entitled to vote generally in the election of
     directors, voting as a single voting group.  Subject to the rights of
     holders of any outstanding Preferred Stock issued by Unisource, vacancies
     on the Board of Directors may be filled only by the Board of Directors, the
     stockholders acting at an annual meeting or, if the vacancy is with respect
     to a director elected by a voting group, by action of any other directors
     elected by such voting group or such voting group.

               Business Conducted at Meetings; Director Nominations.  The By-
     laws provide that in order to bring matters before the annual meetings of
     stockholders, stockholders must give notice to the Company containing
     certain information within 60 to 90 days prior to the anniversary date of
     the previous year's annual meeting or, if the date of the annual meeting is
     not within 30 days of the anniversary date of the previous year's annual
     meeting, no later than the close of business on the tenth day following the
     day on which notice of the date of such meeting was mailed or public
     disclosure of the date of the meeting of stockholders was made, whichever
     first occurs.  In order to nominate candidates for directors of the
     Company, stockholders must give notice to the Company containing certain
     information within 60 to 90 days prior to the anniversary date of the
     previous year's annual meeting or, if the date of an annual meeting is not
     within 30 days of the anniversary of the previous year's annual meeting,
     not earlier than 90 days prior to the annual meeting and not later than the
     close of business on the tenth day following the day on which notice of the
     date of such meeting was mailed or public disclosure of the date of the
     meeting of stockholders was made, whichever first occurs.

               Special Meeting of Stockholders.  The DGCL provides that special
     meetings of stockholders may be called by the Board of Directors of
     Unisource or any person authorized by the Unisource Certificate or By-laws
     to call a special meeting.  The By-laws provide that special meetings may
     be called by the Board of Directors or any person authorized by the Board
     of Directors to call a special meeting.

               No Stockholder Action by Written Consent; Stockholder Action at
     Meetings.  The Unisource Certificate and By-Laws provide that stockholder
     action can be taken only at an annual or special meeting of stockholders,
     and prohibit stockholder action by written consent in lieu of a meeting.

                                       12

 
               Supermajority Voting.  The Unisource Certificate requires the
     approval of the holders of at least 66% of the voting power of all of the
     shares entitled to vote to alter, amend, repeal or adopt any provision
     inconsistent with or limiting the effect of provisions of certain
     enumerated antitakeover provisions in the Unisource Certificate and By-
     laws, including the anti-takeover provisions listed above. The Board of
     Directors may amend, supplement or repeal the By-laws at any time, except
     as limited by law.

     STOCKHOLDER RIGHTS PLAN

               The Company's Board of Directors has adopted a Stockholder Rights
     Plan (the "Stockholder Rights Plan"). Initially, ownership of the rights
     under the Stockholder Rights Plan (the "Rights") will be evidenced by
     Common Stock certificates representing shares then outstanding and, except
     as described below, no separate Rights certificates will be distributed and
     Rights will attach to and trade with Unisource Common Stock.

               Rights Distribution Date. The Rights will separate from the
     Unisource Common Stock and a distribution date ("Rights Distribution Date")
     will occur upon the earlier of (i) ten business days following a public
     announcement that a person or group of affiliated or associated persons (an
     "Acquiring Person") has acquired, or obtained the right to acquire,
     beneficial ownership of 20% or more of the outstanding Unisource Common
     Stock (the "Stock Acquisition Date"), or (ii) within ten business days (or
     such later date as may be determined by the Board of Directors prior to
     such time as any person or group of affiliated or associated persons
     becomes an Acquiring Person) following the commencement of a tender offer
     or exchange offer that would result in a person or group beneficially
     owning 20% or more of the outstanding Common Stock (excluding Unisource and
     its subsidiaries and benefit plans).

               Exercise of Rights; Term of Plan.  The Rights are not exercisable
     until the Rights Distribution Date and will expire at the close of business
     on November 8, 2006, unless earlier redeemed by the Company as described
     below or unless certain transactions set forth in the Stockholder Rights
     Plan have occurred.

               Except in the circumstances described below, after the Rights
     Distribution Date, each Right will be exercisable into one one-hundredth of
     a Series A Preferred Share (a "Series A Preferred Share Fraction").  The
     voting and dividend rights of the Series A Preferred Shares are subject to
     adjustment in the event of dividends, subdivisions and combinations with
     respect to the Unisource Common Stock.  In lieu of issuing certificates for
     Series A Preferred Share Fractions which are less than an integral multiple
     of one Series A Preferred Share (i.e., 100 Series A Preferred Share
     Fractions), the Company may pay cash representing the current market value
     of the Series A Preferred Share Fractions.

               Flip-In Rights.  In the event that (i) at any time following the
     Stock Acquisition Date, the Company is the surviving corporation in a
     merger with an Acquiring Person and its Common Stock remains outstanding,
     (ii) a person, including affiliates and associates, becomes the beneficial
     owner of more than 20% of the then outstanding Unisource Common Stock
     (unless such acquisition is made pursuant to a tender or exchange offer for
     all outstanding Common Stock of the Company, upon terms and conditions
     determined by a majority of the Continuing Directors (as defined below) to
     be in the best interest of the

                                       13

 
     Company and its stockholders (a "Qualifying Offer")), (iii) an Acquiring
     Person, at any time following a Stock Acquisition Date, engages in one or
     more "self-dealing" transactions as set forth in the Stockholder Rights
     Plan, or (iv) during such time as there is an Acquiring Person an event
     occurs that results in such Acquiring Person's ownership interest being
     increased by more than one percent (e.g., a reverse stock split), each
     holder of a Right will thereafter have the right to receive, upon exercise,
     Unisource Common Stock (or, in certain circumstances, cash, property or
     other securities of the Company) having a value equal to approximately two
     times the exercise price of the Right.  In lieu of requiring payment of the
     purchase price upon exercise of the Rights following any such event, the
     Company, by action of a majority of the Continuing Directors in office at
     the time, may permit the holders simply to surrender the Rights, in which
     event they would be entitled to receive Unisource Common Stock (and other
     property, as the case may be) with a value of 50% of what could otherwise
     be purchased by payment of the full Purchase Price.  Notwithstanding any of
     the foregoing, following the occurrence of any of the events set forth in
     clauses (i), (ii), (iii) or (iv) of this paragraph, all Rights that are, or
     (under certain circumstances specified in the Stockholder Rights Plan)
     were, beneficially owned by any Acquiring Person who was involved in the
     transaction giving rise to any such event will be null and void.  However,
     Rights are not exercisable following the occurrence of any of the events
     set forth above until such time as the Rights are no longer redeemable by
     the Company as set forth below.

               Flip-Over Rights.  In the event that, at any time following the
     Stock Acquisition Date, (i) the Company is acquired in a merger or other
     business combination transaction in which the Company is not the surviving
     corporation (other than a merger that follows a Qualifying Offer), or (ii)
     50% or more of the Company's assets or earning power is sold or
     transferred, each holder of a Right (except Rights that previously have
     been voided as set forth above) shall thereafter have the right to receive,
     upon exercise, common shares of the acquiring company having a value equal
     to approximately two times the exercise price of the Rights. Again,
     provision is made to permit, at the option of the Company, surrender of the
     Rights in exchange for one-half of the value otherwise purchasable. The
     events set forth in this paragraph and in the preceding paragraph are
     referred to as the "Triggering Events."

               Antidilution Adjustments.  The Purchase Price payable and/or the
     number of units of Series A Preferred Shares or other securities or
     property issuable upon exercise of the Rights are subject to adjustment
     from time to time to prevent dilution (i) in the event of a stock dividend
     on, or a subdivision, combination or reclassification of, the Series A
     Preferred Shares, (ii) if holders of the Series A Preferred Shares are
     granted certain rights or warrants to subscribe for Series A Preferred
     Shares or convertible securities at less than the current market price of
     the Series A Preferred Shares, or (iii) upon the distribution to holders of
     the Series A Preferred Shares of evidences of indebtedness or assets
     (excluding regular quarterly dividends) or of subscription rights or
     warrants (other than those referred to above). Similar dilution protection
     exists with respect to transactions affecting Common Stock similar to those
     described in clauses (i)-(iii) above.

               Redemption.  At any time until ten days following the Stock
     Acquisition Date, the Company may redeem the Rights in whole, but not in
     part, at a price of $.01 per Right.  That ten day redemption period may be
     extended by the Board of Directors so long as the Rights are still
     redeemable.  Under certain circumstances set forth in the Stockholder
     Rights Plan, the decision to redeem will require the concurrence of the
     Continuing Directors (as defined below).  Immediately upon the action of
     the Board of Directors ordering redemption of the Rights, with, where
     required, the concurrence of the Continuing

                                       14

 
     Directors, the Rights will terminate and the only rights of the holders of
     Rights will be to the right to receive the $.01 per Right redemption price.

               The term "Continuing Directors" means any member of the Board of
     Directors of the Company who was a member of the Board prior to the date of
     the Stockholder Rights Plan, and any person who is subsequently elected to
     the Board if such person's nomination for election to the Board is
     recommended or approved by a majority of the Continuing Directors, but
     shall not include an Acquiring Person, or an affiliate or associate of an
     Acquiring Person, or any representative of the foregoing entities.

               No Stockholder Rights Associated with Rights Before Exercise; Tax
     Consequences.  Until a Right is exercised, the holder thereof, as such,
     will have no rights as a stockholder of the Company, including, without
     limitation, the right to vote or to receive dividends.  While the
     distribution of the Rights will not be taxable to stockholders or to the
     Company, stockholders may, depending upon the circumstances, recognize
     taxable income in the event that the Rights become exercisable for Series A
     Preferred Shares (or other consideration) of the Company or for common
     shares of the acquiring company as set forth above.  See "-Flip-Over
     Rights."

               Amendment.  Other than those provisions relating to the principal
     economic terms of the Rights, any of the provisions of the Stockholder
     Rights Plan may be amended by the Board of Directors of the Company prior
     to the Rights Distribution Date.  After the Rights Distribution Date, the
     provisions of the Stockholder Rights Plan may be amended by the Board (in
     certain circumstances, with the concurrence of a majority of the Continuing
     Directors) in order to cure any ambiguity, to make changes that do not
     adversely affect the interests of the holders of Rights (excluding the
     interests of any Acquiring Person), or to shorten or lengthen any time
     period under the Stockholder Rights Plan; provided, however, that no
     amendment to adjust the time period governing redemption shall be made at
     such time as the Rights are not redeemable.

               Effect of Stockholders Rights Plan.  The Rights have certain
     defensive effects.  The Rights will cause substantial dilution to a person
     or group that attempts to acquire the Company without conditioning the
     offer on a substantial number of Rights being acquired or redeemed.  The
     Rights should not interfere with any merger or other business combination
     approved by the Board of Directors of the Company because (i) the Board of
     Directors (under certain circumstances, with the concurrence of the
     Continuing Directors) may, at its option, at any time prior to the close of
     business on the earlier of (a) the tenth day following the Stock
     Acquisition Date or (b) November 8, 2006, redeem all of the then
     outstanding Rights at $.01 per Right, and (ii) in any event, the
     Stockholder Rights Plan does not apply to a tender or exchange offer for
     all outstanding shares of the Company which is determined by a majority of
     the Continuing Directors to be a Qualifying Offer.  The Board of Directors
     may, as discussed above, extend the ten day redemption period so long as
     the Rights are still redeemable.  See "--Redemption."

                                 LEGAL OPINIONS

               The validity of the issuance of the shares of Common Stock
     offered hereby is being passed upon for Unisource by Morgan, Lewis &
     Bockius LLP, Philadelphia, Pennsylvania.

                                    EXPERTS

                                       15

 
               The consolidated financial statements of Unisource Worldwide,
     Inc., as of September 30, 1995 and 1996 and for the years ended September
     30, 1994, 1995 and 1996, and the related financial statement schedule,
     which are incorporated by reference herein from the 1934 Act Registration
     Statement, have been audited by Ernst & Young LLP, independent auditors, as
     set forth in their reports thereon included therein and incorporated herein
     by reference.  Such consolidated financial statements and schedule are
     incorporated herein by reference in reliance upon such reports given upon
     the authority of such firm as experts in accounting and auditing.

                                       16

 
                PART II.  INFORMATION NOT REQUIRED IN PROSPECTUS

     ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS

               Section 145 of the DGCL ("Section 145") permits indemnification
     of directors, officers, agents and controlling persons of a corporation
     under certain conditions and subject to certain limitations.  Section 145
     empowers a corporation to indemnify any person who was or is a party or is
     threatened to be made a party to any threatened, pending or completed
     action, suit or proceeding, whether civil, criminal, administrative or
     investigative, by reason of the fact that such person is or was a director,
     officer or agent of the corporation or another enterprise if serving at the
     request of the corporation.  Depending on the character of the proceeding,
     a corporation may indemnify against expenses (including attorneys' fees),
     judgments, fines and amounts paid in settlement actually and reasonably
     incurred in connection with such action, suit or proceeding if the person
     indemnified acted in good faith and in a manner such person reasonably
     believed to be in or not opposed to, the best interests of the corporation,
     and, with respect to any criminal action or proceeding, had no reasonable
     cause to believe such person's conduct was unlawful.  In the case of an
     action by or in the right of the Company, no indemnification may be made
     with respect to any claim, issue or matter as to which such person shall
     have been adjudged to be liable to the corporation unless and only to the
     extent that the Delaware Court of Chancery or the court in which such
     action or suit was brought shall determine that despite the adjudication of
     liability such person is fairly and reasonably entitled to indemnity for
     such expenses which the court shall deem proper.  Section 145 further
     provides that to the extent a director or officer of the Company has been
     successful in the defense of any action, suit or proceeding referred to
     above or in the defense of any claim, issue or matter therein, such person
     shall be indemnified against expenses (including attorneys' fees) actually
     and reasonably incurred by such person in connection therewith.

               Unisource's By-laws contain provisions for indemnification of
     directors, officers, employees and agents to the fullest extent permitted
     by Section 145 and Delaware law which, in general, presently requires that
     the individual act in good faith and in a manner he or she reasonably
     believed to be in or not opposed to the Company's best interests and, in
     the case of any criminal proceedings, that the individual has no reason to
     believe his or her conduct was unlawful.  Unisource's By-laws also permit
     Unisource to purchase insurance and Unisource has purchased and maintains
     insurance on behalf of Unisource directors, officers, employees and agents
     against any liability asserted against such person and incurred by such
     person in any such capacity, or arising out of such person's status as
     such, whether or not Unisource would have the power to indemnify such
     person against such liability under the foregoing provision of the By-laws.

                                      II-1

 
ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

 
 


Exhibit
Number     Description
- -------    -----------
        
    2.1*   Distribution Agreement between Alco Standard Corporation and Unisource and certain of its
           subsidiaries
    3.1**  Restated Certificate of Incorporation of Unisource.
    3.2**  Amended and Restated By-laws of Unisource.
    4.1*** Rights Agreement dated as of December 30, 1996 between Unisource and National City
           Bank, as Rights Agent.
    5.1**  Opinion of Morgan, Lewis & Bockius LLP regarding validity of Common Stock.
   10.1*   Tax Sharing Agreement between Alco Standard Corporation and Unisource and certain of its
            subsidiaries
   10.2    [Left intentionally blank]
   10.3    [Left intentionally blank]
   10.4*   Information Technology Services Agreement between Unisource and Integrated Systems
           Solutions Corporation, (Incorporated by reference to Alco Standard Corporation Form 10-K
           for fiscal year ended 1995, Exhibit 10.19 (File No.
           1-05964)).
   10.5    [Left intentionally blank]
   10.6    [Left intentionally blank]
   10.7    [Left intentionally blank]
   10.8    [Left intentionally blank]
   10.9    [Left intentionally blank]
   10.10   [Left intentionally blank]
   10.11   [Left intentionally blank]
   10.12*  Credit Agreement among Unisource, Unisource Capital Corporation, Unisource Canada, Inc.,
           The Chase Manhattan Bank, as administrative agent, and the Lenders Party thereto.
   23.1**  Consent of Morgan, Lewis & Bockius LLP (included in Exhibit 5.1)
   23.2**  Consent of Ernst & Young LLP
   24.1**  Form of power of attorney executed by certain members of the Board of Directors

 
 
  *   Incorporated by reference to Form 10 Registration Statement dated November
      26, 1996 (File No. 1-14482).

 **   Filed herewith.

***   Incorporated by reference to Registration Statement on Form 8-A concerning
      Preferred Stock Purchase Rights (File No. 1-14482).   

                                      II-2

 
     ITEM 22.  UNDERTAKINGS

     ITEM 22.  UNDERTAKINGS

       Insofar as indemnification for liabilities arising under the Securities
     Act of 1933 may be permitted to directors, officers and controlling persons
     of the registrant pursuant to the provisions described in Item 20, or
     otherwise, the registrant has been advised that in the opinion of the
     Securities and Exchange Commission such indemnification is against public
     policy as expressed in the Act and is, therefore, unenforceable. In the
     event that a claim for indemnification against such liabilities (other than
     the payment by the registrant of expenses incurred or paid by a director,
     officer or controlling person of the registrant in the successful defense
     of any action, suit or proceeding) is asserted by such director, officer or
     controlling person in connection with the securities being registered, the
     registrant will, unless in the opinion of its counsel the matter has been
     settled by controlling precedent, submit to a court of appropriate
     jurisdiction the question whether such indemnification by it is against
     public policy as expressed in the Act and will be governed by the final
     adjudication of such issue.

               The undersigned Registrant hereby undertakes:

               (1) To file, during any period in which any offers or sales are
     being made, a post-effective amendment to the Registration Statement:

               (i) To include any prospectus required by Section 10(a)(3) of the
     Securities Act of 1933;

               (ii) To reflect in the prospectus any facts or events arising
     after the effective date of the Registration Statement (or the most recent
     post-effective amendment thereof) which, individually or in aggregate,
     represent a fundamental change in the information set forth in the
     Registration Statement. Notwithstanding the foregoing, any increase or
     decrease in volume of securities offered (if the total dollar value of
     securities offered would not exceed that which was registered) and any
     deviation from the low or high and of the estimated maximum offering range
     may be reflected in the form of prospectus filed with the Commission
     pursuant to Rule 424(b) if, in the aggregate, the changes in volume and
     price represent no more than 20 percent change in the maximum aggregate
     offering price set forth in the "Calculation of Registration Fee" table in
     the effective Registration Statement;

               (iii)   To include any material information with respect to the
     plan of distribution not previously disclosed in the Registration Statement
     or any other material change to such information in the Registration
     Statement.

               (2) That for the purpose of determining any liability under the
     Act each such post-effective amendment may be deemed to be a new
     registration statement relating to the

                                      II-3

 
     securities being offered therein and the offering of such securities at the
     time may be deemed to be the initial bona fide offering thereof.

               (3) To remove from registration by  means of a post-effective
     amendment any of the securities which are being registered which remain
     unsold at the termination of the offering.

               (4) That, for purposes of determining any liability under the
     Securities Act of 1933, each filing of the registrant's annual report
     pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act
     of 1934 that is incorporated by reference in the Registration Statement
     shall be deemed to be a new registration statement relating to the
     securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide offering thereof.

               (5) To deliver or cause to be delivered with the Prospectus, to
     each person to whom the Prospectus is sent or given, the latest annual
     report to security holders that is incorporated by reference in the
     Prospectus and furnished pursuant to and meeting the requirements of Rule
     14a-3 or Rule 14c-3 under the Securities Exchange Act of 1934; and where
     interim financial information required to be presented by Article 3 of
     Regulation S-X are not set forth in the Prospectus, to deliver, or caused
     to be delivered to each person to whom the Prospectus is sent or given, the
     latest quarterly report that is specifically incorporated by reference in
     the Prospectus to provide such interim financial information.

               (6) As follows: that prior to any public reoffering of the
     securities registered hereunder through use of a prospectus which is a part
     of this Registration Statement, by any person or party who is deemed to be
     an underwriter within the meaning of Rule 145(c), the issuer undertakes
     that such reoffering prospectus will contain the information called for by
     the applicable registration form with respect to reoffering by persons who
     may be deemed underwriters, in addition to the information called for by
     the other items of the applicable form.

               (7) That every prospectus (i) that is filed pursuant to paragraph
     (1) immediately preceding or (ii) that purports to meet the requirements of
     Section 10(a)(3) of the Act and is used in connection with an offering of
     securities subject to Rule 415, will be filed as part of an amendment to
     the Registration Statement and will not be used until such amendment is
     effective, and that, for purposes of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.

               (8) To respond to requests for information that is incorporated
     by reference into the Prospectus pursuant to Items 4, 10(b), 11, or 13 of
     this Form, within one (1) business day of receipt of such request, and to
     send the incorporated documents by first class mail or other equally prompt
     means. This includes information contained in documents filed subsequent to
     the effective date of the Registration Statement through the date of
     responding to the request.

                                      II-4

 
               (9) To supply by means of a post-effective amendment, Rule 424(c)
     supplement or information incorporated by reference, all information
     concerning a material transaction, and the company being acquired involved
     there, that was not the subject of and included in the Registration
     Statement when it became effective.

                                      II-5

 
                                   SIGNATURES

               Pursuant to the requirements of the Securities Act of 1933, as
     amended, the registrant has duly caused this Registration Statement on Form
     S-4 to be signed on its behalf by the undersigned, thereunto duly
     authorized, in Wayne, Pennsylvania, on the dates set forth below.


                                    UNISOURCE WORLDWIDE, INC.


     Date: April 25, 1997           By:   /s/ Ray B. Mundt
                                       -------------------------------------
                                       (Ray B. Mundt)
                                       Chairman and Chief Executive Officer

               Pursuant to the requirements of the Securities Act of 1933, this
     Registration Statement has been signed below on April 25, 1997 by the
     following persons on behalf of the registrant and in the capacities
     indicated.

               Each person whose signature appears below appoints Hugh G.
     Moulton and Thomas A. Decker, as his true and lawful attorneys-in-fact and
     agents, with full power and substitution and resubstitution, for him and in
     his name, place and stead, in any and all capacities, to sign any and all
     amendments (including post-effective amendments) to this Registration
     Statement, and to file the same, with all exhibits thereto and all other
     documents in connection therewith, with the Securities and Exchange
     Commission, granting unto said attorney-in-fact and agent full power and
     authority to do and perform each and every act and anything appropriate or
     necessary to be done, as fully and for all intents and purposes as he might
     or could do in person, hereby ratifying and confirming all that said
     attorney-in-fact and agent or his substitute or substitutes may lawfully do
     or cause to be done by virtue hereof.

                                      II-6

 


 
 
SIGNATURE                                TITLE                   DATE
                                                      

/s/  Ray B. Mundt            Chairman and Chief Executive   April 25, 1997
- ---------------------------  Officer (Principal Executive
(Ray B. Mundt)               Officer)
 


           *                 Director                       April 25, 1997
- ---------------------------
(Paul J. Darling, II)


           *                 Director                       April 25, 1997
- ---------------------------
(James J. Forese)


           *                 Director                       April 25, 1997
- ---------------------------
(Dana G. Mead)


           *                 Director                       April 25, 1997
- ---------------------------
(Rogelio G. Sada)


           *                 Director                       April 25, 1997
- ---------------------------
(James W. Stratton)


/s/  Jack H. Keeney          Vice President - Finance       April 25, 1997
- ---------------------------  (Principal Accounting and
(Jack H.  Keeney)            Financial Officer)
 

*By: /s/  Thomas A. Decker                                  April 25, 1997
    -----------------------
    Thomas A. Decker
    Attorney-in-fact



                                      II-7

 
                                 EXHIBIT INDEX



Exhibit
Number   Description
- -------  -----------
      
  2.1*   Distribution Agreement between Alco Standard Corporation and Unisource and certain of its
         subsidiaries
  3.1**  Restated Certificate of Incorporation of Unisource.
  3.2**  Amended and Restated By-laws of Unisource.
  4.1*** Rights Agreement dated as of December 30, 1996 between Unisource and National City
         Bank, as Rights Agent.
  5.1**  Opinion of Morgan, Lewis & Bockius LLP regarding validity of Common Stock.
 10.1*   Tax Sharing Agreement between Alco Standard Corporation and Unisource and certain of its
         subsidiaries
 10.2    [Left intentionally blank]
 10.3    [Left intentionally blank]
 10.4*   Information Technology Services Agreement between Unisource and Integrated Systems
         Solutions Corporation, (Incorporated by reference to Alco Standard Corporation Form 10-K
         for fiscal year ended 1995, Exhibit 10.19 (File No.
         1-05964)).
 10.5    [Left intentionally blank]
 10.6    [Left intentionally blank]
 10.7    [Left intentionally blank]
 10.8    [Left intentionally blank]
 10.9    [Left intentionally blank]
 10.10   [Left intentionally blank]
 10.11   [Left intentionally blank]
 10.12*  Credit Agreement among Unisource, Unisource Capital Corporation, Unisource Canada, Inc.,
         The Chase Manhattan Bank, as administrative agent, and the Lenders Party thereto.
 23.1**  Consent of Morgan, Lewis & Bockius LLP (included in Exhibit 5.1)
 23.2**  Consent of Ernst & Young LLP
 24.1**  Form of power of attorney executed by certain members of the Board of Directors

 
 
  * Incorporated by reference to Form 10 Registration Statement dated November
    26, 1996 (File No. 1-14482). 

 ** Filed herewith.

*** Incorporated by reference to Registration Statement on Form 8-A concerning
    Preferred Stock Purchase Rights (File No. 1-14482).