MOSINEE PAPER CORPORATION
                1988 STOCK APPRECIATION RIGHTS PLAN

                     As amended March 4, 1999

                     MOSINEE PAPER CORPORATION
                1988 STOCK APPRECIATION RIGHTS PLAN


     1.   PURPOSE.

          The purpose of the Mosinee Paper Corporation 1988 Stock
 Appreciation Rights Plan (the "Plan") is to attract and retain
 outstanding individuals as officers and key employees of Mosinee Paper

 Corporation (the "Corporation") and its subsidiaries, and to furnish
 incentives to such individuals through rewards based upon the
 performance of the common stock of the Corporation.  To this end,
 the Committee hereinafter designated may grant stock appreciation
 rights to officers and other key employees of the Corporation and its
 subsidiaries, on the terms and subject to the conditions set forth in
 this Plan.

     2.   PARTICIPANTS.

          Participants in the Plan shall consist of such officers and
 other key employees of the Corporation and its subsidiaries as the
 Committee in its sole discretion may select from time to time to
 receive stock appreciation rights.

     3.   ADMINISTRATION OF THE PLAN.

          The Plan shall be administered by a Committee (the
 "Committee") of at least three members appointed by the Board of
 Directors of the Corporation from among its members.  No person shall
 be appointed a member of the Committee if, during the one year prior to
 the date on which such person's service as a member of the Committee is
 to commence, such person was granted or awarded equity securities of
 the Corporation (within the meaning of Securities and Exchange
 Commission Rule 16a-1(d)) under the Plan or any other plan of the
 Corporation or any subsidiary of the Corporation.  Subject to the
 provisions of the Plan, the Committee shall

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 have authority (i) to determine which employees of the Corporation and
 its subsidiaries shall be eligible for participation in the Plan; (ii)
 to select employees to receive grants under the Plan; (iii) to
 determine the number of stock appreciation rights subject to the grant,
 the time and conditions of exercise or vesting, the fair market value
 of the common stock of the Corporation for purposes of the Plan, and
 all other terms and conditions of any grant; and (iv) to prescribe the
 form of agreement, certificate or other instrument evidencing the
 grant.  The Committee shall also have authority to interpret the Plan
 and to establish, amend and rescind rules and regulations for the
 administration of the Plan, and all such interpretations, rules and
 regulations shall be conclusive and binding on all persons, provided,
 however, that the Committee shall not exercise such authority in a
 manner adversely and significantly affecting rights previously granted
 unless the action taken is required to comply with any applicable law
 or regulation.

     4.   EFFECTIVE DATE AND TERM OF PLAN.

          The Plan shall become effective on June 16, 1988, the date of
 its approval by the Board of Directors of the Corporation.  The Plan
 shall terminate ten years after it becomes effective, unless terminated
 sooner by action of the Board of Directors.  No further grants may be
 made under the Plan after its termination, but the termination of the
 Plan shall not affect the rights of any participant under, or the
 authority of the Committee with respect to, any grants made prior to
 termination.

     5.   SHARES SUBJECT TO THE PLAN.

          Subject to adjustment as provided in paragraph 7 hereof, the
 aggregate number of shares of common stock of the Corporation with
 respect to which stock appreciation rights may be granted under the

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 Plan shall not exceed 350,000.  Whenever a stock appreciation right
 granted under the Plan can no longer under any circumstances be
 exercised, the shares, if any, then remaining subject to such stock
 appreciation right shall thereupon be released from such stock
 appreciation right and shall thereafter be available for additional
 grants of stock appreciation rights under the Plan.

     6.   STOCK APPRECIATION RIGHTS.

          (a)  GRANTS.  Stock appreciation rights entitling the grantee
 to receive cash equal to the sum of (i) the appreciation in value of
 and (ii) the value of the reinvested cash dividends which would have
 been paid with respect to a stated number of shares of common stock of
 the Corporation between the date of grant and the date of exercise (the
 "hypothetical reinvested cash dividends") may be granted from time to
 time to such officers and other key employees of the Corporation and
 its subsidiaries as may be selected by the Committee.

          (b)  TERMS OF GRANT.  Stock appreciation rights shall be
 exercisable in whole or in such installments and at such times as may
 be determined by the Committee, provided that no stock appreciation
 right shall be exercisable more than twenty years after the date of
 grant.  The Committee may at the time of grant or at any time
 thereafter impose such additional terms and conditions on the exercise
 of stock appreciation rights as it deems necessary or desirable for
 compliance with Section 16(a) or 16(b) of the Securities Exchange Act
 of 1934 and the rules and regulations thereunder.

          (c)  TERMINATION OF EMPLOYMENT OR DEATH.  If a grantee ceases
 to be employed by the Corporation and any of its subsidiaries for any
 reason other than death or attaining his Retirement Date, any stock
 appreciation right held by such grantee may be exercised for a period

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 ending on thee arlier of the 90th day following the date of such
 cessation of employment or the date of expiration of such stock
 appreciation right, but only with respect to that number of shares of
 common stock for which such right was exercisable immediately prior to
 the date of cessation of employment.

     If a grantee ceases to be employed by the Corporation or any of
 its subsidiaries by reason of death prior to his Retirement Date, or
 dies within 90 days after termination of his employment by the
 Corporation or any of its subsidiaries prior to his having attained
 his Retirement Date, any stock appreciation right held by such grantee
 may be exercised, with respect to all or any part of the common stock
 of the Corporation with respect to which such stock appreciation right

 was exercisable by the grantee immediately prior to his death, for a
 period ending on the first anniversary of the date of such grantee's
 death.

     If a grantee attains his Retirement Date, any stock appreciation
 right held by such grantee may be exercised for a period ending on the
 second anniversary of such Retirement Date, but only with respect to
 that number of shares of common stock for which such right was
 exercisable immediately prior to the date of cessation of employment.

     Notwithstanding any other provision of this Section 6(c), no stock
 appreciation right shall be exercisable after the first to occur of (1)
 the date specified in Section 6(b) or (2) the date specified by the
 Committee in the grant evidencing such rights.

      For purposes of this Plan, the term "Retirement Date" shall mean
 the date on which the grantee's employment with the Corporation (and
 any parent or subsidiary of the Corporation) terminates (including
 termination because of death) if the Optionee had then attained age 55

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 and completed ten calendar years of service with the Corporation (or
 any parent or subsidiary of the Corporation).

          (d)  PAYMENT ON EXERCISE.  Upon exercise of a stock
 appreciation right the grantee shall be paid within five business days
 an amount in cash equal to the sum of (i) the amount by which the fair
 market value of one share of the Corporation's common stock on the date
 of exercise exceeds the date of grant value thereof multiplied by the
 number of shares in respect of which the stock appreciation right is
 being exercised and (ii) the value of the hypothetical reinvested cash
 dividends associated therewith.  The value of the hypothetical
 reinvested cash dividends associated with a share in respect of which
 the stock appreciation right is being exercised (the "exercised share")
 shall be equal to the fair market value on the date of exercise of the
 number of additional shares (or fraction thereof) of the Corporation's
 common stock the grantee would have owned if it is assumed (1) that
 cash dividends which would have been paid with respect to the exercised
 share if the exercised share had been outstanding from the time of
 grant had been paid in cash to the grantee and then immediately
 reinvested by the grantee in the Corporation's common stock at the fair
 market value thereof on the applicable dividend payment date, and (2)
 that, once assumed issued, hypothetical shares resulting from assumed
 dividend reinvestment themselves paid cash dividends (at the same time
 and in the same amount as shares of the Corporation's outstanding
 common stock) which were reinvested in a similar manner.

          For purposes of this paragraph, the fair market value of a
 share of common stock of the Corporation means:

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               (A)  The mean between the high and low prices at which 
     the common stock of the Corporation was traded if the common stock
     of the Corporation was then listed for trading on a national or regional

     securities exchange; or

               (B)  The mean between the published high and low prices
     of the common stock of the Corporation if the common stock of the
     Corporation was then traded on a bona fide over-the-counter market;
     or (C)  If the common stock of the Corporation was not traded
     on an exchange or on a bona fide over-the-counter market, a value
     determined by an appraiser selected by the Committee.

 In the event that the date of the exercise of a stock appreciation
 right is a date on which there is no trading of the common stock of the
 Corporation on a national or regional securities exchange or is a date
 for which there is no published bid and asked prices if the stock is
 traded on the over-the-counter market, such fair market value shall be
 determined by referring to the next preceding business day on which
 trading occurs or on which published prices are available.

          (e)  ADDITIONAL TERMS AND CONDITIONS.  The agreement or
 instrument evidencing the grant of stock appreciation rights may
 contain such other terms, provisions and conditions not inconsistent
 with the Plan as may be determined by the Committee in its sole
 discretion.

     7.   ADJUSTMENTS FOR CHANGES IN CAPITALIZATION, ETC.

          Stock appreciation rights shall be subject to adjustment by
 the Committee in its sole discretion as to the number, kind and date

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 of grant value of shares or other consideration subject to such
 grants in the event of changes in the outstanding common stock by
 reason of stock dividends, stock splits, recapitalizations,
 reorganizations, mergers, consolidations, combinations, exchanges or
 other relevant changes in corporate structure or capitalization
 occurring after the date of the grant of any stock appreciation right,
 provided that if the Corporation shall change its common stock into a
 greater or lesser number of shares through a stock dividend, stock
 split-up, or combination of shares, outstanding rights shall be
 adjusted proportionately, consistent with existing law and regulation,
 to prevent inequitable results.

     8.   EFFECT OF LIQUIDATION, MERGER, CONSOLIDATION OR OTHER EVENTS.
          Nothing contained in the Plan or in any stock appreciation
 right granted under the Plan shall in any way prohibit the Corporation
 from merging with or consolidating into another corporation, or from
 selling or transferring all or substantially all of its assets, or from
 distributing all or substantially all of its assets to its stockholders
 in liquidation, or from dissolving and terminating its corporate
 existence; and in any such event, all outstanding stock appreciation
 rights granted under the Plan shall be deemed to have been exercised at
 the time of any such merger, consolidation, sale or transfer of assets,
 liquidation, or dissolution, except to the extent that any agreement or
 undertaking of any party to such merger, consolidation, or sale or
 transfer of assets, or any plan pursuant to which such liquidation or

 dissolution is effected, shall make specific provision to continue such
 stock appreciation rights and the rights of such person or persons
 entitled to exercise such stock appreciation rights.

     9.   AMENDMENT AND TERMINATION OF PLAN.
          The Plan may be amended or terminated by the Board of
 Directors of the Corporation in any respect, provided, however, that

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 the Board shall not exercise such authority in a manner adversely and
 significantly affecting rights previously granted unless the action
 taken is required to comply with any applicable law or regulation.

     10.  MISCELLANEOUS.

          (a)  NO RIGHT TO A GRANT.  Neither the adoption of the Plan
 nor any action of the Board of Directors or of the Committee shall be
 deemed to give any employee any right to be selected as a participant
 or to be granted a stock appreciation right.

          (b)  RIGHTS AS STOCKHOLDER.  No person shall have any rights
 as a stockholder of the Corporation with respect to any shares covered
 by a stock appreciation right.

          (c)  EMPLOYMENT.  Nothing contained in this Plan shall be
 deemed to confer upon any employee any right of continued employment
 with the Corporation or any of its subsidiaries or to limit or
 diminish in any way the right of the Corporation or any such subsidiary
 to terminate his or her employment at any time with or without cause.

          (d)  TAXES.  The Corporation shall be entitled to deduct from
 any payment under the Plan the amount of any tax required by law to be
 withheld with respect to such payment or may require any participant to
 pay such amount to the Corporation prior to and as a condition of
 making such payment.

          (e)  NONTRANSFERABILITY.  No stock appreciation right shall be
 transferable except by will or the laws of descent and distribution.
 During the holder's lifetime, stock appreciation rights shall be
 exercisable only by such holder.

     11.  CHANGE IN CONTROL.

          (a)  Definition of "Change in Control."  For purposes of the
 Plan, a "Change in Control" means the happening of any of the following
 events:

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          (i)  The acquisition by any individual, entity or group
     (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange
     Act (a "Person") of beneficial ownership (within the meaning of
     Rule 13d-3 promulgated under the Exchange Act) of 20% or more of
     either (A) the then outstanding shares of common stock (the
     "Outstanding Company Common Stock") of Wausau-Mosinee Paper
     Corporation (the "Company") or (B) the combined voting power of the

     then outstanding voting securities of the Company entitled to vote
     generally in the election of directors (the "Outstanding Company
     Voting Securities"); excluding, however, the following: (1) any
     acquisition directly from the Company other than an acquisition by
     virtue of the exercise of a conversion privilege unless the
     security being so converted was itself acquired directly from the
     Company, (2) any acquisition by the Company, (3) any acquisition by
     any employee benefit plan (or related trust) sponsored or
     maintained by the Company or any entity controlled by the Company,
     (4) any acquisition pursuant to a transaction which complies with
     clauses (A), (B), and (C) of paragraph (iii) of this Section 11(a),
     (5) except as provided in paragraphs (iv) and (v), any acquisition
     by any of the Woodson Entities or any of the Smith Entities, or (6)
     any increase in the proportionate number of shares of Outstanding
     Company Common Stock or Outstanding Company Voting Securities
     beneficially owned by a Person to 20% or more of the shares of
     either of such classes of stock if such increase was solely the
     result of the acquisition of Outstanding Company Common Stock or
     Outstanding Company Voting Securities by the Company; provided,
     however, that this clause (6) shall not apply to any acquisition of

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     Outstanding Company Common Stock or Outstanding Company Voting
     Securities not described in clauses (1), (2), (3), (4), or (5) of
     this paragraph (i) by the Person acquiring such shares which occurs
     after such Person had become the beneficial owner of 20% or more of
     either the Outstanding Company Common Stock or Outstanding Company
     Voting Securities by reason of share purchases by the Company; or

          (ii)  A change in the composition of the Board of Directors of
     the Company (for purposes of this Section 11, the "Board") such 
     that the individuals who, as of the Effective Date, constitute the
     Board (such Board shall be hereinafter referred to as the
     "Incumbent Board") cease for any reason to constitute at least a
     majority of the Board; provided, however, for purposes of the Plan,
     that any individual who becomes a member of the Board subsequent to
     the Effective Date whose election, or nomination for election by
     the Company's shareholders, was approved by a vote of at least a
     majority of those individuals who are members of the Board and who
     were also members of the Incumbent Board (or deemed to be such
     pursuant to this proviso) shall be deemed to be and shall be
     considered as though such individual were a member of the Incumbent
     Board, but provided, further, that any such individual whose
     initial assumption of office occurs as a result of either an actual
     or threatened election contest (as such terms are used in Rule
     14a-11 of Regulation 14A promulgated under the Exchange Act) or
     other actual or threatened solicitation of proxies or consents by
     or on behalf of a Person other than the Board shall not be so
     deemed or considered as a member of the Incumbent Board; or

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          (iii)  Consummation of a reorganization, merger or 
     consolidation, or sale or other disposition of all or substantially
     all of the assets of the Company or the acquisition of the assets
     or securities of any other entity (a "Corporate Transaction");

     excluding, however, such a Corporate Transaction pursuant to which
     (A) all or substantially all of the individuals and entities who
     are the beneficial owners, respectively, of the Outstanding Company
     Common Stock and Outstanding Company Voting Securities immediately
     prior to such Corporate Transaction will beneficially own, directly
     or indirectly, more than 60% of, respectively, the outstanding
     shares of common stock and the combined voting power of the then
     outstanding voting securities entitled to vote generally in the
     election of directors, as the case  may be, of the corporation
     resulting from such Corporate Transaction (including, without
     limitation, a corporation which as a result of such transaction
     owns the Company or all or substantially all of the Company's
     assets either directly or through one or more subsidiaries)
     (the "Resulting Corporation") in substantially the same proportions
     as their ownership, immediately prior to such Corporate
     Transaction, of the Outstanding Company Common Stock and
     Outstanding Company Voting Securities, as the case may be, (B) no
     Person (other than the Company, any employee benefit plan (or
     related trust) of the Company, any Woodson Entity, any Smith
     Entity, or such Resulting Corporation) will beneficially own,
     directly or indirectly, 20% or more of,

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     respectively, the outstanding shares of common stock of the
     Resulting Corporation or the combined voting power of the then
     outstanding voting securities of such Resulting Corporation
     entitled to vote generally in the election of directors except
     to the extent that such ownership existed with respect to the
     Company prior to the Corporate Transaction, and (C) individuals
     who were members of the Incumbent Board will constitute at least a
     majority of the members of the board of directors of the Resulting
     Corporation; or

     (iv)  The Woodson Entities acquire beneficial ownership of more
     than 35% of the Outstanding Company Common Stock or Outstanding
     Company Voting Securities or of the outstanding shares of common
     stock or the combined voting power of the then outstanding voting
     securities entitled to vote generally in the election of directors,
     as the case may be, of the Resulting Corporation; or

           (v)  The Smith Entities acquire beneficial ownership of more
     than 35% of the Outstanding Company Common Stock or Outstanding
     Company Voting Securities or of the outstanding shares of common
     stock or the combined voting power of the then outstanding voting
     securities entitled to vote generally in the election of directors,
     as the case may be, of the Resulting Corporation; or

          (vi)  The approval by the shareholders of the Company of a
     complete liquidation or dissolution of the Company.

     For purposes of this Section 11(a), the term "Woodson Entities"
 shall mean Aytchmonde P. Woodson, Leigh Yawkey Woodson and Alice
 Richardson Yawkey, members of their respective families and their
 respective descendants (the "Woodson Family"), heirs or legatees of
 any of the Woodson Family members, transferees by will, laws of
 descent or distribution or by operation of law of any of the

 foregoing (including of any such transferees) (including any
 executor or administrator of any estate of any of the foregoing),
 any trust established by any of Aytchmonde P. Woodson, Leigh Yawkey
 Woodson, or Alice Richardson Yawkey, whether pursuant to last will
 or otherwise, any partnership, trust or other entity established
 primarily for the benefit of, or any other Person the beneficial
 owners of which consist primarily of, any of the foregoing or any
 Affiliates or Associates of any of the foregoing or any charitable
 trust or foundation to which any of the foregoing transfers or may
 transfer securities of the Company (including any beneficiary or
 trustee, partner, manager or director of any of the foregoing or any
 other Person serving any such entity in a similar capacity).

     For purposes of this Section 11(a), the term "Smith Entities" shall
 mean David B. Smith and Katherine S. Smith, members of their respective
 families and their respective descendants (the "Smith Family"), heirs
 or legatees of any of the Smith Family members, transferees by will,
 laws of descent or distribution or by operation of law of any of the
 foregoing (including of any such transferees) (including any executor
 or administrator of any estate of any of the foregoing), any trust

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 established by either of David B. Smith or Katherine S. Smith, whether
 pursuant to last will or otherwise, any partnership, trust or other
 entity established primarily for the benefit of, or any other Person
 the beneficial owners of which consist primarily of, any of the
 foregoing or any Affiliates or Associates of any of the foregoing or
 any charitable trust or foundation to which any of the foregoing
 transfers or may transfer securities of the Company (including any
 beneficiary or trustee, partner, manager or director of any of the
 foregoing or any other Person serving any such entity in a similar
 capacity).

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     For purposes of this Section 11(a), the terms "Affiliate" and
 "Associate" shall have the meanings ascribed to such terms in Rule
 12b-2 of the General Rules and Regulations under the Exchange Act as 
 in effect on the date of this Plan.

     (b)  Effects of Change in Control.

     (i)  In the event of a Change in Control,

          (A)  all stock appreciation rights ("SARs") outstanding on the
     date on which such Change in Control has occurred (the "Change in
     Control Date") shall, to the extent not then exercisable or vested,
     immediately become exercisable in full, and

          (B)  each grantee may elect, with respect to each SAR held by
     such grantee on the Change in Control Date (the grantee's "Election
     Right"), to surrender such SAR for an immediate lump sum cash
     payment in an amount equal to the product of (1) the number of
     shares of common stock of the Company ("Shares") then subject to
     the SAR as to which the election is being exercised, multiplied by
     (2) the excess, if any, of (a) the greater of (i) the Change in

     Control Price or (ii) the highest Fair Market Value of a Share on
     any day in the 60-day period ending on the Change in Control Date,
     over (b) the date of grant value of such SAR.  Upon exercise of a
     grantee's Election Right,the value of all hypothetical reinvested
     cash dividends associated with such SAR shall also be determined by
     the greater of (i) theChange in Control Price or (ii) the highest
     Fair Market Value of a Share on any day in the 60-day period ending
     on the Change in Control Date.   For purposes of this Section
     11(b), the "Change in Control Price" shall mean, if the Change in
     Control is the result of a tender or exchange offer or a Corporate
     Transaction (as defined in Section

                                    -14-

     11(a)(iii), the highest price per Share paid in such tender or
     exchange offer or Corporate Transaction.  To the extent that the
     consideration paid in any such transaction consists all or in part
     of securities or other noncash consideration, the value of such
     securities or other noncash consideration shall be determined in 
     the sole discretion of the Committee.

          (ii)  The exercise of an Election Right must be in writing,
     specify the  SAR or SARs and the number of Shares as to which the
     election is being exercised, and be delivered to the Secretary of
     the Company either in person or by depositing said notice and
     payment in the United States mail, postage pre-paid and addressed
     to such officer at the Company's home office on or before the 60th 
     day following the Change in Control Date.

          (iii)  All payments due an grantee pursuant to the provisions
     of this Section 11(b) shall be made by the Company on or before the
     first to occur of (A) the date provided in this Plan for payment
     upon exercise of an SAR and (B) the 5th business day following the
     date on which the grantee's election has been delivered to the
     Company pursuant to Section 11(b)(ii).

          (iv)  Notwithstanding any other provision of this Section
     11(b), if the grant or the exercise of a grantee's Election Right 
     or payment of cash provided for in this Section 11(b)would make a
     Change in Control transaction ineligible for pooling-of-interests
     accounting treatment under APB No. 16, that, but for the nature of
     such grant or exercise of Election Rights, would otherwise be
     eligible for such pooling-of-interests accounting treatment, the
     Committee shall have

                                    -15-

     the right and authority to modify, eliminate, or terminate the
     Election Right to the extent necessary to preserve such pooling-of-
     interests accounting treatment.

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