UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

              CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT
                              INVESTMENT COMPANIES

                  Investment Company Act file number 811-01311
                                                    ----------

                             The GAMCO Mathers Fund
      -------------------------------------------------------------------
               (Exact name of registrant as specified in charter)

                              One Corporate Center
                            Rye, New York 10580-1422
      -------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)

                                 Bruce N. Alpert
                               Gabelli Funds, LLC
                              One Corporate Center
                            Rye, New York 10580-1422
      -------------------------------------------------------------------
                     (Name and address of agent for service)

       registrant's telephone number, including area code: 1-800-422-3554
                                                          ---------------

                      Date of fiscal year end: December 31
                                              ------------

                     Date of reporting period: June 30, 2007
                                              --------------


Form N-CSR is to be used by management investment companies to file reports with
the Commission not later than 10 days after the  transmission to stockholders of
any report that is required to be transmitted to  stockholders  under Rule 30e-1
under the Investment Company Act of 1940 (17 CFR 270.30e-1).  The Commission may
use the information provided on Form N-CSR in its regulatory, disclosure review,
inspection, and policymaking roles.

A registrant  is required to disclose the  information  specified by Form N-CSR,
and the  Commission  will make this  information  public.  A  registrant  is not
required to respond to the  collection  of  information  contained in Form N-CSR
unless the Form  displays a  currently  valid  Office of  Management  and Budget
("OMB")  control number.  Please direct comments  concerning the accuracy of the
information  collection  burden  estimate and any  suggestions  for reducing the
burden to  Secretary,  Securities  and Exchange  Commission,  100 F Street,  NE,
Washington,  DC 20549. The OMB has reviewed this collection of information under
the clearance requirements of 44 U.S.C. ss. 3507.







ITEM 1.  REPORTS TO STOCKHOLDERS.

The Report to Shareholders is attached herewith.

                               GAMCO MATHERS FUND

                               SEMI-ANNUAL REPORT
                                  JUNE 30, 2007

TO OUR SHAREHOLDERS,

      The Sarbanes-Oxley Act's corporate governance regulations require a Fund's
principal executive and financial officers to certify the entire contents of the
semi-annual and annual  shareholder  reports in a filing with the Securities and
Exchange  Commission (the "SEC") on Form N-CSR.  This  certification  covers the
portfolio  manager's  commentary and subjective opinions if they are attached to
or a part of the financial statements.

      Rather than ask our portfolio  managers to eliminate their opinions and/or
restrict  their   commentary  to  historical  facts  only,  we  separated  their
commentary from the financial statements and investment portfolio and sent it to
you separately to ensure that its content is complete and unrestricted. Both the
commentary and the financial statements, including the portfolio of investments,
are also available on our website at www.gabelli.com/funds.

      We  trust  that  you  understand   that  our  approach  is  an  unintended
consequence of the ever  increasing  regulatory  requirements  affecting  public
companies generally.  We hope the specific  certification  requirements of these
regulations  will be modified as they relate to mutual funds,  since  investment
companies have different  corporate  structures and objectives from other public
companies.

                                                      Sincerely yours,


                                                      /s/ Bruce N. Alpert
                                                      -------------------
                                                      Bruce N. Alpert
                                                      Executive Vice President
August 27, 2007


GAMCO MATHERS FUND
DISCLOSURE OF FUND EXPENSES (UNAUDITED)
For the Six Month Period from January 1, 2007 through June 30, 2007
                                                                   EXPENSE TABLE
================================================================================

We believe it is important for you to understand the impact of fees and expenses
regarding  your  investment.  All mutual  funds have  operating  expenses.  As a
shareholder  of a fund,  you  incur  ongoing  costs,  which  include  costs  for
portfolio  management,  administrative  services,  and shareholder reports (like
this one), among others.  Operating  expenses,  which are deducted from a fund's
gross income,  directly  reduce the investment  return of a fund.  When a fund's
expenses are expressed as a percentage of its average net assets, this figure is
known as the expense  ratio.  The  following  examples  are intended to help you
understand  the  ongoing  costs (in  dollars) of  investing  in your Fund and to
compare these costs with those of other mutual funds.  The examples are based on
an  investment  of $1,000 made at the beginning of the period shown and held for
the entire period.

The Expense Table below illustrates your Fund's costs in two ways:

ACTUAL FUND  RETURN:  This section  provides  information  about actual  account
values and actual expenses. You may use this section to help you to estimate the
actual  expenses that you paid over the period after any fee waivers and expense
reimbursements.  The "Ending  Account  Value"  shown is derived  from the Fund's
ACTUAL return during the past six months,  and the "Expenses Paid During Period"
shows the dollar  amount  that would have been paid by an  investor  who started
with $1,000 in the Fund. You may use this information,  together with the amount
you invested, to estimate the expenses that you paid over the period.

To do so, simply  divide your account  value by $1,000 (for  example,  an $8,600
account value  divided by $1,000 = 8.6),  then multiply the result by the number
given for your Fund under the heading  "Expenses Paid During Period" to estimate
the expenses you paid during this period.

HYPOTHETICAL 5% RETURN:  This section provides  information  about  hypothetical
account  values and  hypothetical  expenses  based on the Fund's actual  expense
ratio. It assumes a hypothetical  annualized return of 5% before expenses during
the period shown. In this case - because the hypothetical return used is NOT the
Fund's  actual  return - the  results  do not apply to your  investment  and you
cannot use the  hypothetical  account  value and expense to estimate  the actual
ending  account  balance or expenses  you paid for the period.  This  example is
useful in making  comparisons  of the ongoing costs of investing in the Fund and
other  funds.  To do so,  compare  this  5%  hypothetical  example  with  the 5%
hypothetical examples that appear in shareholder reports of other funds.

Please note that the  expenses  shown in the table are meant to  highlight  your
ongoing  costs only and do not  reflect  any  transactional  costs such as sales
charges  (loads),  redemption  fees, or exchange  fees,  if any,  which would be
described in the Prospectus.  If these costs were applied to your account,  your
costs  would be  higher.  Therefore,  the 5%  hypothetical  return  is useful in
comparing ongoing costs only, and will not help you determine the relative total
costs of owning different funds.

                   Beginning       Ending       Annualized    Expenses
                 Account Value  Account Value    Expense     Paid During
                   01/01/07       06/30/07        Ratio        Period*
- --------------------------------------------------------------------------------
GAMCO MATHERS FUND
- --------------------------------------------------------------------------------
ACTUAL FUND RETURN
GAMCO Mathers      $1,000.00     $1,028.00        2.18%        $10.90

HYPOTHETICAL 5% RETURN
GAMCO Mathers      $1,000.00     $1,013.91        2.18%        $10.83

* Expenses  are equal to the Fund's  annualized  expense  ratio for the last six
  months multiplied by the average account value over the period,  multiplied by
  the number of days in the most recent fiscal half-year, then divided by 365.

                                       2


SUMMARY OF PORTFOLIO HOLDINGS (UNAUDITED)

The following table presents portfolio holdings as a percent of total net assets
as of June 30, 2007:

LONG POSITIONS                                       PERCENT
U.S. Government Obligations ..................       85.9%
Repurchase Agreements ........................        9.4%
Health Care ..................................        1.8%
Environmental Services .......................        0.9%
Specialty Chemicals ..........................        0.7%
Cable and Satellite ..........................        0.5%
Food and Beverage ............................        0.4%
Business Services ............................        0.4%
Paper and Forest Products ....................        0.3%
Financial Services ...........................        0.2%
Other Assets and Liabilities (Net) ...........       17.0%

SHORT POSITIONS                                      PERCENT
Exchange Traded Funds ........................       (8.7)%
Retail .......................................       (2.8)%
Entertainment ................................       (2.4)%
Consumer Products ............................       (1.0)%
Equipment ....................................       (0.9)%
Home Furnishings .............................       (0.8)%
Restaurants ..................................       (0.4)%
Automotive ...................................       (0.3)%
Metals and Mining ............................       (0.2)%

THE FUND FILES A COMPLETE  SCHEDULE OF PORTFOLIO  HOLDINGS  WITH THE THE SEC FOR
THE FIRST AND THIRD  QUARTERS OF EACH FISCAL YEAR ON FORM N-Q, THE LAST OF WHICH
WAS FILED FOR THE QUARTER  ENDED MARCH 31,  2007.  SHAREHOLDERS  MAY OBTAIN THIS
INFORMATION   AT   WWW.GABELLI.COM   OR  BY  CALLING  THE  FUND  AT  800-GABELLI
(800-422-3554).  THE  FUND'S  FORM N-Q IS  AVAILABLE  ON THE  SEC'S  WEBSITE  AT
WWW.SEC.GOV  AND MAY ALSO BE REVIEWED AND COPIED AT THE SEC'S  PUBLIC  REFERENCE
ROOM IN WASHINGTON,  DC.  INFORMATION  ON THE OPERATION OF THE PUBLIC  REFERENCE
ROOM MAY BE OBTAINED BY CALLING 1-800-SEC-0330.

PROXY VOTING

The Fund files Form N-PX with its complete proxy voting record for the 12 months
ended June 30th,  no later than August 31st of each year. A  description  of the
Fund's  proxy  voting  policies,  procedures,  and how the  Fund  voted  proxies
relating to portfolio  securities is available without charge,  upon request, by
(i) calling 800-GABELLI (800-422-3554); (ii) writing to The Gabelli Funds at One
Corporate  Center,  Rye, NY  10580-1422;  or (iii) visiting the SEC's website at
www.sec.gov.








                                       3


GAMCO MATHERS FUND
SCHEDULE OF INVESTMENTS -- JUNE 30, 2007 (UNAUDITED)
================================================================================

                                                                       MARKET
      SHARES                                              COST         VALUE
      -------                                             ----         ------
              COMMON STOCKS -- 5.2%
              BUSINESS SERVICES -- 0.4%
       2,000  The Brink's Co. ...................... $   124,444    $   123,780
                                                     -----------    -----------
              CABLE AND SATELLITE -- 0.5%
       5,000  Comcast Corp., Cl. A+ ................     141,970        140,600
                                                     -----------    -----------
              ENVIRONMENTAL SERVICES -- 0.9%
       1,000  Veolia Environnement, ADR ............      33,650         78,410
       5,000  Waste Management Inc. ................     176,959        195,250
                                                     -----------    -----------
                                                         210,609        273,660
                                                     -----------    -----------
              FINANCIAL SERVICES -- 0.2%
       2,000  Marsh & McLennan
                Companies Inc. .....................      61,760         61,760
                                                     -----------    -----------
              FOOD AND BEVERAGE -- 0.4%
       5,000  Hain Celestial Group Inc.+ ...........     102,917        135,700
                                                     -----------    -----------
              HEALTH CARE -- 1.8%
       5,000  Abbott Laboratories ..................     213,875        267,750
       5,000  Baxter International Inc. ............     168,167        281,700
                                                     -----------    -----------
                                                         382,042        549,450
                                                     -----------    -----------
              PAPER AND FOREST PRODUCTS -- 0.3%
       1,000  Weyerhaeuser Co. .....................      79,466         78,930
                                                     -----------    -----------
              SPECIALTY CHEMICALS -- 0.7%
       3,000  Monsanto Co. .........................     203,408        202,620
                                                     -----------    -----------
              TOTAL COMMON STOCKS ..................   1,306,616      1,566,500
                                                     -----------    -----------
    PRINCIPAL
     AMOUNT
    --------
              SHORT-TERM OBLIGATIONS -- 95.3%
              REPURCHASE AGREEMENTS -- 9.4%
 $ 2,839,680  State Street Bank & Trust Co.,
                4.000%, dated 06/29/07, due
                07/02/07, proceeds at
                maturity, $2,840,627 (a) ...........   2,839,680      2,839,680
                                                     -----------    -----------
              U.S. TREASURY BILLS -- 85.9%
  26,000,000  U.S. Treasury Bills,
                3.500%++, 07/05/07 (b) .............  25,983,306     25,983,306
                                                     -----------    -----------
              TOTAL SHORT-TERM
                OBLIGATIONS ........................  28,822,986     28,822,986
                                                     -----------    -----------
              TOTAL
                INVESTMENTS -- 100.5% .............. $30,129,602     30,389,486
                                                     ===========
              SECURITIES SOLD SHORT -- (17.5)%
                (Proceeds received $5,372,800) ..................    (5,282,520)
              OTHER ASSETS AND LIABILITIES (NET) -- 17.0% .......     5,146,149
                                                                    -----------
              NET ASSETS -- 100.0%...............................   $30,253,115
                                                                    ===========

                                                                      MARKET
      SHARES                                            PROCEEDS      VALUE
      -------                                           --------      ------

              SECURITIES SOLD SHORT -- (17.5)%
              COMMON STOCKS SOLD SHORT -- (17.5)%
              AUTOMOTIVE -- (0.3)%
      10,000  Ford Motor Co. ....................... $    94,299    $    94,200
                                                     -----------    -----------
              CONSUMER PRODUCTS -- (1.0)%
       5,000  Harley-Davidson Inc. .................     306,348        298,050
                                                     -----------    -----------
              ENTERTAINMENT -- (2.4)%
       5,000  Carnival Corp. .......................     238,008        243,850
       5,000  Polaris Industries Inc. ..............     284,238        270,800
       5,000  Royal Caribbean Cruises Ltd. .........     208,007        214,900
                                                     -----------    -----------
                                                         730,253        729,550
                                                     -----------    -----------
              EQUIPMENT -- (0.9)%
       3,000  Black & Decker Corp. .................     266,327        264,930
                                                     -----------    -----------
              EXCHANGE TRADED FUNDS -- (8.7)%
       2,000  iShares MSCI Emerging
                Markets Index Fund .................     261,517        263,300
      10,000  iShares Russell 2000 Index ...........     833,587        829,000
      10,000  iShares S&P SmallCap
                600 Index ..........................     714,489        711,000
       5,000  MidCap SPDR Trust, Ser. 1 ............     814,189        813,350
                                                     -----------    -----------
                                                       2,623,782      2,616,650
                                                     -----------    -----------
              HOME FURNISHINGS -- (0.8)%
       5,000  Ethan Allen Interiors Inc. ...........     173,878        171,250
       5,000  La-Z-Boy Inc. ........................      92,588         57,300
                                                     -----------    -----------
                                                         266,466        228,550
                                                     -----------    -----------
              METALS AND MINING -- (0.2)%
       2,000  AK Steel Holding Corp. ...............      74,343         74,740
                                                     -----------    -----------
              RESTAURANTS -- (0.4)%
       5,000  The Cheesecake Factory Inc. ..........     134,136        122,600
                                                     -----------    -----------
              RETAIL -- (2.8)%
       5,000  RadioShack Corp. .....................     154,549        165,700
       5,000  Starbucks Corp. ......................     132,898        131,200
       5,000  The Home Depot Inc. ..................     198,147        196,750
       5,000  Wal-Mart Stores Inc. .................     238,643        240,550
       5,000  Zale Corp. ...........................     152,609        119,050
                                                     -----------    -----------
                                                         876,846        853,250
                                                     -----------    -----------
              TOTAL SECURITIES
                SOLD SHORT ......................... $ 5,372,800    $ 5,282,520
                                                     ===========    ===========
- ----------------
(a)  Collateralized  by $2,570,000  U.S.  Treasury Bond,  6.250%,  due 08/15/23,
     market value $2,897,675.
(b)  At June 30,  2007,  $23,000,000  of the  principal  amount  was  pledged as
     collateral for securities sold short.
+    Non-income producing security.
++   Represents annualized yield at date of purchase.
ADR  American Depository Receipt
SPDR Standard & Poor's Depository Receipts


                 See accompanying notes to financial statements.

                                       4


                               GAMCO MATHERS FUND

STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 2007 (UNAUDITED)
================================================================================

ASSETS:
  Investments, at value (cost $27,289,922) ..............  $ 27,549,806
  Repurchase agreements, at value
    (cost $2,839,680) ...................................     2,839,680
  Deposit at brokers ....................................     2,177,619
  Receivable for investments sold .......................     5,899,876
  Dividends and interest receivable .....................         4,059
  Prepaid expense .......................................         1,554
                                                           ------------
  TOTAL ASSETS ..........................................    38,472,594
                                                           ------------
LIABILITIES:
  Securities sold short (proceeds $5,372,800) ...........     5,282,520
  Payable for investments purchased .....................     2,862,325
  Payable for Fund shares redeemed ......................         5,300
  Payable for investment advisory fees ..................        23,981
  Payable for distribution fees .........................         5,995
  Other accrued expenses ................................        39,358
                                                           ------------
  TOTAL LIABILITIES .....................................     8,219,479
                                                           ------------
  NET ASSETS applicable to 2,839,604
    shares outstanding ..................................  $ 30,253,115
                                                           ============
NET ASSETS CONSIST OF:
  Paid-in capital, at $0.001 par value ..................  $ 43,429,971
  Accumulated net investment income .....................       454,258
  Accumulated  net realized loss on investments
    and securities sold short ...........................   (13,981,278)
  Net unrealized appreciation on securities
    sold short ..........................................        90,280
  Net unrealized appreciation on investments ............       259,884
                                                           ------------
  NET ASSETS ............................................  $ 30,253,115
                                                           ============
  NET ASSET VALUE, offering and redemption price
    per share ($30,253,115 / 2,839,604 shares
    outstanding; unlimited number of
    shares authorized) ..................................        $10.65
                                                                 ======

STATEMENT OF OPERATIONS
FOR THE SIX MONTHS ENDED JUNE 30, 2007 (UNAUDITED)
================================================================================
INVESTMENT INCOME:
  Dividends (net of foreign taxes of $639)...............     $  32,936
  Interest ..............................................       660,643
  Other income...........................................        98,424
                                                              ---------
  TOTAL INVESTMENT INCOME................................       792,003
                                                              ---------
EXPENSES:
  Investment advisory fees ..............................       150,424
  Distribution fees .....................................        37,606
  Dividends on securities sold short.....................        29,669
  Trustees' fees ........................................        27,609
  Shareholder communications expenses....................        21,971
  Shareholder services fees..............................        19,218
  Legal and audit fees...................................        18,327
  Registration expenses .................................        10,898
  Custodian fees.........................................         4,427
  Miscellaneous expenses.................................         7,057
                                                              ---------
  TOTAL EXPENSES.........................................       327,206
  Less: Custodian fee credits............................          (109)
                                                              ---------
  NET EXPENSES...........................................       327,097
                                                              ---------
  NET INVESTMENT INCOME..................................       464,906
                                                              ---------
NET REALIZED AND UNREALIZED GAIN (LOSS) ON
  INVESTMENTS AND SECURITIES SOLD SHORT:
  Net realized gain on investments.......................       976,069
  Net realized loss on securities sold short.............      (439,015)
                                                              ---------
  Net realized gain on investments
    and securities sold short............................       537,054
                                                              ---------
  Net change in unrealized appreciation/
    depreciation on investments..........................      (375,218)
  Net change in unrealized appreciation/
    depreciation on securities sold short................       232,986
                                                              ---------
  Net change in unrealized appreciation/depreciation
    on investments and securities sold short.............      (142,232)
                                                              ---------
  NET REALIZED AND UNREALIZED GAIN (LOSS) ON
    INVESTMENTS AND SECURITIES SOLD SHORT................       394,822
                                                              ---------
  NET INCREASE IN NET ASSETS RESULTING
    FROM OPERATIONS......................................     $ 859,728
                                                              =========

STATEMENT OF CHANGES IN NET ASSETS
================================================================================


                                                                                              SIX MONTHS ENDED
                                                                                                JUNE 30, 2007      YEAR ENDED
                                                                                                 (UNAUDITED)    DECEMBER 31, 2006
                                                                                               ---------------  -----------------
                                                                                                             
OPERATIONS:
  Net investment income........................................................................ $   464,906        $ 1,004,654
  Net realized gain on investments.............................................................     976,069             37,153
  Net realized loss on securities sold short...................................................    (439,015)        (1,174,643)
  Net change in unrealized appreciation/depreciation on investments and securities sold short..    (142,232)         1,104,868
                                                                                                -----------        -----------
  NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS.........................................     859,728            972,032
                                                                                                -----------        -----------
DISTRIBUTIONS TO SHAREHOLDERS:
  Net investment income........................................................................          --         (1,015,302)
                                                                                                -----------        -----------
  TOTAL DISTRIBUTIONS TO SHAREHOLDERS..........................................................          --         (1,015,302)
                                                                                                -----------        -----------
SHARES OF BENEFICIAL INTEREST TRANSACTIONS:
  Net decrease in net assets from shares of beneficial interest transactions...................  (1,709,874)        (6,467,599)
                                                                                                -----------        -----------
  NET DECREASE IN NET ASSETS...................................................................    (850,146)        (6,510,869)
NET ASSETS:
  Beginning of period..........................................................................  31,103,261         37,614,130
                                                                                                -----------        -----------
  End of period (including undistributed net investment income of
     $454,258 and $0, respectively)............................................................ $30,253,115        $31,103,261
                                                                                                ===========        ===========


                 See accompanying notes to financial statements.

                                       5


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
================================================================================

1. ORGANIZATION.  GAMCO Mathers Fund (the "Fund"),  formerly the Gabelli Mathers
Fund,  was organized on June 17, 1999 as a Delaware  statutory  trust.  The Fund
commenced  investment  operations  on  October 1, 1999 as the  successor  to the
Mathers Fund, Inc. (the "Mathers Fund") which was organized on March 31, 1965 as
a Maryland  corporation.  The Mathers Fund  commenced  investment  operations on
August  19,  1965.  The Fund is a  diversified  open-end  management  investment
company  registered  under the  Investment  Company Act of 1940, as amended (the
"1940 Act"). The Fund's primary objective is long-term capital appreciation.

2. SIGNIFICANT  ACCOUNTING POLICIES.  The preparation of financial statements in
accordance with United States ("U.S.") generally accepted accounting  principles
requires  management to make estimates and assumptions  that affect the reported
amounts and disclosures in the financial statements. Actual results could differ
from those  estimates.  The  following  is a summary of  significant  accounting
policies followed by the Fund in the preparation of its financial statements.

SECURITY  VALUATION.  Portfolio  securities  listed or  traded  on a  nationally
recognized securities exchange or traded in the U.S. over-the-counter market for
which market quotations are readily available are valued at the last quoted sale
price or a market's  official  closing  price as of the close of business on the
day the  securities  are being  valued.  If there  were no sales  that day,  the
security is valued at the  average of the  closing  bid and asked  prices or, if
there were no asked  prices  quoted on that day,  then the security is valued at
the closing bid price on that day. If no bid or asked  prices are quoted on such
day,  the  security is valued at the most  recently  available  price or, if the
Board of Trustees (the "Board") so determines, by such other method as the Board
shall  determine  in good  faith to reflect  its fair  market  value.  Portfolio
securities  traded on more than one national  securities  exchange or market are
valued according to the broadest and most  representative  market, as determined
by Gabelli Funds, LLC (the "Adviser").

Portfolio  securities  primarily traded on a foreign market are generally valued
at the preceding  closing values of such securities on the relevant market,  but
may be fair valued  pursuant to  procedures  established  by the Board if market
conditions change  significantly after the close of the foreign market but prior
to the  close of  business  on the day the  securities  are being  valued.  Debt
instruments  with  remaining  maturities  of 60 days or less that are not credit
impaired are valued at amortized cost,  unless the Board  determines such amount
does not reflect the securities' fair value, in which case these securities will
be fair valued as determined by the Board.  Debt  instruments  having a maturity
greater  than 60 days for which  market  quotations  are readily  available  are
valued at the average of the latest bid and asked prices. If there were no asked
prices  quoted on such day,  the security is valued using the closing bid price.
Futures contracts are valued at the closing  settlement price of the exchange or
board of trade on which the applicable contract is traded.

Securities and assets for which market  quotations are not readily available are
fair  valued as  determined  by the  Board.  Fair  valuation  methodologies  and
procedures may include, but are not limited to: analysis and review of available
financial and non-financial  information  about the company;  comparisons to the
valuation and changes in valuation of similar securities, including a comparison
of foreign  securities to the equivalent U.S. dollar value ADR securities at the
close of the U.S.  exchange;  and evaluation of any other information that could
be indicative of the value of the security.

In September 2006, the Financial  Accounting Standards Board (the "FASB") issued
Statement  of  Financial   Accounting   Standards   ("SFAS")   157,  Fair  Value
Measurements,  which  clarifies  the  definition  of  fair  value  and  requires
companies  to expand  their  disclosure  about the use of fair  value to measure
assets and liabilities in interim


                                       6


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
================================================================================

and annual  periods  subsequent  to initial  recognition.  Adoption  of SFAS 157
requires the use of the price that would be received to sell an asset or paid to
transfer a liability in an orderly  transaction  between market  participants at
the measurement date. SFAS 157 is effective for financial  statements issued for
fiscal years beginning after November 15, 2007, and interim periods within those
fiscal  years.  At this time,  management  is in the  process of  reviewing  the
requirements  of SFAS 157 against its current  valuation  policies to  determine
future applicability.

REPURCHASE  AGREEMENTS.  The Fund may  enter  into  repurchase  agreements  with
primary  government  securities dealers recognized by the Federal Reserve Board,
with  member  banks of the  Federal  Reserve  System,  or with other  brokers or
dealers that meet credit  guidelines  established by the Adviser and reviewed by
the Board.  Under the terms of a typical  repurchase  agreement,  the Fund takes
possession  of an  underlying  debt  obligation  subject to an obligation of the
seller to repurchase,  and the Fund to resell,  the obligation at an agreed-upon
price and time, thereby  determining the yield during the Fund's holding period.
The Fund will always receive and maintain  securities as collateral whose market
value, including accrued interest,  will be at least equal to 102% of the dollar
amount  invested by the Fund in each  agreement.  The Fund will make payment for
such  securities  only upon  physical  delivery  or upon  evidence of book entry
transfer of the collateral to the account of the  custodian.  To the extent that
any repurchase transaction exceeds one business day, the value of the collateral
is marked-to-market on a daily basis to maintain the adequacy of the collateral.
If the seller defaults and the value of the collateral declines or if bankruptcy
proceedings   are  commenced  with  respect  to  the  seller  of  the  security,
realization of the collateral by the Fund may be delayed or limited. At June 30,
2007, the Fund had an investment of $2,839,680 in a repurchase agreement.

FUTURES  CONTRACTS.  The Fund may engage in futures contracts for the purpose of
hedging  against  changes in the value of its  portfolio  securities  and in the
value of  securities  it  intends  to  purchase.  Upon  entering  into a futures
contract,  the Fund is required to deposit  with the broker an amount of cash or
cash equivalents equal to a certain  percentage of the contract amount.  This is
known as the "initial margin". Subsequent payments ("variation margin") are made
or received by the Fund each day,  depending  on the daily  fluctuations  in the
value    of    the    contract,     which    are    included    in    unrealized
appreciation/depreciation   on  investments  and  futures  contracts.  The  Fund
recognizes a realized gain or loss when the contract is closed.

There are several  risks in  connection  with the use of futures  contracts as a
hedging  instrument.   The  change  in  value  of  futures  contracts  primarily
corresponds  with the  value  of their  underlying  instruments,  which  may not
correlate with the change in value of the hedged investments. In addition, there
is the risk that the Fund may not be able to enter  into a  closing  transaction
because of an illiquid  secondary  market.  At June 30, 2007, there were no open
futures contracts.

SECURITIES SOLD SHORT.  The Fund may enter into short sale  transactions.  Short
selling involves selling  securities that may or may not be owned and, at times,
borrowing the same securities for delivery to the purchaser,  with an obligation
to replace such borrowed  securities at a later date. The proceeds received from
short sales are recorded as liabilities  and the Fund records an unrealized gain
or loss to the extent of the  difference  between the proceeds  received and the
value of an open short position on the day of determination.  The Fund records a
realized gain or loss when the short  position is closed out. By entering into a
short sale, the Fund bears the market risk of an unfavorable change in the price
of the security sold short.  Dividends on short sales are recorded as an expense
by the Fund on the  ex-dividend  date and  interest  expense is  recorded on the
accrual  basis.  Securities  sold  short at June 30,  2007 are  reported  in the
Schedule of Investments.

                                       7


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
================================================================================

SECURITIES  TRANSACTIONS  AND INVESTMENT  INCOME.  Securities  transactions  are
accounted  for on the  trade  date  with  realized  gain or loss on  investments
determined  by using the  identified  cost method.  Interest  income  (including
amortization  of premium and  accretion  of discount) is recorded on the accrual
basis.  Premiums  and  discounts  on debt  securities  are  amortized  using the
effective  yield  to  maturity  method.  Dividend  income  is  recorded  on  the
ex-dividend date except for certain  dividends which are recorded as soon as the
Fund is informed of the dividend.

EXPENSES.  Certain  administrative  expenses are common to, and allocated among,
various  affiliated funds. Such allocations are made on the basis of each fund's
average  net  assets  or other  criteria  directly  affecting  the  expenses  as
determined by the Adviser pursuant to procedures established by the Board.

CUSTODIAN FEE CREDITS AND INTEREST EXPENSE. When cash balances are maintained in
the  custody  account,  the Fund  receives  credits  which  are  used to  offset
custodian  fees.  The gross  expenses  paid under the  custody  arrangement  are
included in custodian fees in the Statement of Operations with the corresponding
expense offset, if any, shown as "custodian fee credits". When cash balances are
overdrawn, the Fund is charged an overdraft fee of 2.00% above the Federal Funds
rate on outstanding  balances.  This amount, if any, would be shown as "interest
expense" in the Statement of Operations.

DISTRIBUTIONS TO SHAREHOLDERS. Distributions to shareholders are recorded on the
ex-dividend date.  Distributions to shareholders are based on income and capital
gains as determined in accordance with federal income tax regulations, which may
differ from income and capital gains as determined under U.S. generally accepted
accounting  principles.   These  differences  are  primarily  due  to  differing
treatments  of income and gains on  various  investment  securities  held by the
Fund, timing differences,  and differing characterizations of distributions made
by the Fund.  These book/tax  differences  are either  temporary or permanent in
nature. To the extent these  differences are permanent,  adjustments are made to
the appropriate capital accounts in the period when the differences arise. These
reclassifications have no impact on the net asset value ("NAV") of the Fund.

The tax character of  distributions  paid during the fiscal year ended  December
31, 2006 was $1,015,302 of ordinary income.

PROVISION  FOR  INCOME  TAXES.  The Fund  intends  to  continue  to qualify as a
regulated  investment company under Subchapter M of the Internal Revenue Code of
1986, as amended (the  "Code").  It is the policy of the Fund to comply with the
requirements  of the Code  applicable to regulated  investment  companies and to
distribute  substantially  all of its net investment  company taxable income and
net capital gains. Therefore, no provision for federal income taxes is required.

At December 31, 2006,  the Fund had net capital loss  carryforwards  for federal
income  tax  purposes  of  $14,477,736,  which are  available  to reduce  future
required  distributions  of net capital gains to  shareholders.  $12,430,175  is
available  through  2010;  $670,201  is  available  through  2011;  $280,466  is
available through 2012; and $1,096,894 is available through 2014.

The following  summarizes the tax cost of investments,  proceeds of short sales,
and the related unrealized appreciation/(depreciation) at June 30, 2007:



                                                        GROSS               GROSS
                                      COST/           UNREALIZED          UNREALIZED     NET UNREALIZED
                                    (PROCEEDS)       APPRECIATION        DEPRECIATION     APPRECIATION
                                    ----------       ------------        ------------    --------------
                                                                                  
         Investments.............   $30,129,602           $263,242        $ (3,358)           $259,884
         Short sales.............    (5,372,800)           118,254         (27,974)             90,280
                                                          --------        --------            --------
                                                          $381,496        $(31,332)           $350,164
                                                          ========        ========            ========



                                       8


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
================================================================================

In July 2006, the FASB issued Interpretation No. 48, "Accounting for Uncertainty
in  Income  Taxes,   an   Interpretation   of  FASB  Statement  No.  109"  ("the
Interpretation").  The  Interpretation  established for all entities,  including
pass-through  entities  such as the Fund,  a  minimum  threshold  for  financial
statement  recognition  of the benefit of positions  taken in filing tax returns
(including  whether  an entity is  taxable in a  particular  jurisdiction),  and
required certain expanded tax disclosures. The Interpretation was implemented by
the Fund on June 29, 2007 and applied to all open tax years as of the  effective
date. Management has evaluated the application of the Interpretation to the Fund
and the adoption of the  Interpretation had no impact on the amounts reported in
the financial statements.

3. INVESTMENT  ADVISORY AGREEMENT AND OTHER  TRANSACTIONS.  The Fund has entered
into an  investment  advisory  agreement  (the  "Advisory  Agreement")  with the
Adviser which provides that the Fund will pay the Adviser a fee,  computed daily
and paid monthly,  at the annual rate of 1.00% of the value of its average daily
net assets.  In accordance with the Advisory  Agreement,  the Adviser provides a
continuous   investment   program  for  the  Fund's   portfolio,   oversees  the
administration  of all aspects of the Fund's business and affairs,  and pays the
compensation of all Officers and Trustees of the Fund who are affiliated persons
of the Adviser.

The Fund pays each Trustee that is not considered an affiliated person an annual
retainer  of $5,000  plus $1,000 for each Board  meeting  attended  and they are
reimbursed for any out of pocket expenses  incurred in attending  meetings.  All
Board  committee  members  receive $500 per meeting  attended.  Trustees who are
directors  or  employees  of the  Adviser or an  affiliated  company  receive no
compensation or expense reimbursement from the Fund.

4.  DISTRIBUTION  PLAN.  The Fund's Board has adopted a  distribution  plan (the
"Plan") pursuant to Rule 12b-1 under the 1940 Act. For the six months ended June
30, 2007,  the Fund  incurred  distribution  costs payable to Gabelli & Company,
Inc. ("Gabelli & Company"), an affiliate of the Adviser, of $37,606, or 0.25% of
its  average  daily net  assets,  the  annual  limitation  under the Plan.  Such
payments are accrued daily and paid monthly.

5. PORTFOLIO SECURITIES. Purchases and proceeds from the sales of securities for
the six months ended June 30, 2007, other than short-term securities, aggregated
$2,392,997 and $5,145,261, respectively.

6. TRANSACTIONS WITH AFFILIATES.  During the six months ended June 30, 2007, the
Fund paid brokerage commissions of $0 to Gabelli & Company.

7.  LINE OF  CREDIT.  Effective  June  20,  2007,  the Fund  participates  in an
unsecured line of credit of up to  $75,000,000 and  may  borrow up to 10% of its
net assets from the custodian for temporary  borrowing  purposes.  Prior to June
20, 2007, the line of credit was $25,000,000.  Borrowings under this arrangement
bear  interest at 0.75% above the Federal  Funds rate on  outstanding  balances.
This amount,  if any,  would be shown as "interest  expense" in the Statement of
Operations.  At June 30, 2007,  there were no borrowings  outstanding  under the
line of credit.

8. SHARES OF BENEFICIAL INTEREST.  Transactions in shares of beneficial interest
were as follows:



                                                            SIX MONTHS ENDED
                                                              JUNE 30, 2007                      YEAR ENDED
                                                               (UNAUDITED)                    DECEMBER 31, 2006
                                                       --------------------------      ----------------------------
                                                        SHARES          AMOUNT            SHARES           AMOUNT
                                                       --------------------------      ----------------------------
                                                                                           
Shares sold .........................................    23,203       $   243,910         321,631      $  3,346,542
Shares issued upon reinvestment of distributions ....        --                --          89,008           920,344
Shares redeemed .....................................  (186,648)       (1,953,784)     (1,011,815)      (10,734,485)
                                                       --------       -----------      ----------      ------------
  Net decrease ......................................  (163,445)      $(1,709,874)       (601,176)     $ (6,467,599)
                                                       ========       ===========      ==========      ============


                                       9


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
================================================================================

The Fund  imposes a  redemption  fee of 2.00% on  shares  that are  redeemed  or
exchanged  on or  before  the  seventh  day after  the date of a  purchase.  The
redemption fee is deducted from the proceeds  otherwise payable to the redeeming
shareholders  and is retained by the Fund. The  redemption  fees retained by the
Fund  during  the six  months  ended  June 30,  2007 and the  fiscal  year ended
December 31, 2006 amounted to $0 and $0, respectively.

The  redemption fee does not apply to redemptions of shares where (i) the shares
were   purchased   through   automatic   reinvestment   of  dividends  or  other
distributions,  (ii) the redemption was initiated by the Fund,  (iii) the shares
were purchased  through  programs that collect the redemption fee at the program
level and remit them to the Fund,  or (iv) the  shares  were  purchased  through
programs that the Adviser determines to have appropriate anti-short-term trading
policies  in place or as to which  the  Adviser  has  received  assurances  that
look-through  redemption  fee  procedures or effective  anti-short-term  trading
policies and procedures are in place.

9.  INDEMNIFICATIONS.  The Fund enters into  contracts that contain a variety of
indemnifications.  The Fund's  maximum  exposure  under  these  arrangements  is
unknown.  However, the Fund has not had prior claims or losses pursuant to these
contracts and expects the risk of loss to be remote.

10. OTHER MATTERS.  The Adviser and/or  affiliates  received  subpoenas from the
Attorney General of the State of New York and the SEC requesting  information on
mutual fund share  trading  practices  involving  certain  funds  managed by the
Adviser.  GAMCO  Investors,   Inc.  ("GAMCO"),  the  Adviser's  parent  company,
responded to these  requests for documents and  testimony.  In June 2006,  GAMCO
began discussions with the SEC regarding a possible resolution of their inquiry.
In February  2007,  the Adviser made an offer of  settlement to the staff of the
SEC for  communication  to the Commission for its  consideration to resolve this
matter.  This offer of settlement is subject to agreement regarding the specific
language of the SEC's administrative order and other settlement documents.  On a
separate matter, in September 2005, the Adviser was informed by the staff of the
SEC that the staff may recommend to the Commission that an administrative remedy
and a monetary penalty be sought from the Adviser in connection with the actions
of two of seven  closed-end  funds  managed by the  Adviser  relating to Section
19(a)  and Rule  19a-1 of the 1940  Act.  These  provisions  require  registered
investment  companies  to provide  written  statements  to  shareholders  when a
dividend is made from a source other than net investment  income.  While the two
closed-end funds sent annual statements and provided other materials  containing
this information, the funds did not send written statements to shareholders with
each  distribution in 2002 and 2003. The Adviser  believes that all of the funds
are now in  compliance.  The Adviser  believes  that these matters would have no
effect on the Fund or any material  adverse effect on the Adviser or its ability
to manage the Fund.












                                       10


GAMCO MATHERS FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
================================================================================

11.  FINANCIAL  HIGHLIGHTS.  Selected  data for a share of  beneficial  interest
outstanding throughout each period:



                                         SIX MONTHS ENDED                     YEAR ENDED DECEMBER 31,
                                           JUNE 30, 2007    ---------------------------------------------------------
                                            (UNAUDITED)       2006         2005        2004         2003        2002
                                         ----------------    ------       ------      ------       ------      ------
                                                                                           
OPERATING PERFORMANCE:
   Net asset value, beginning of period .... $ 10.36        $ 10.44      $ 10.49     $ 10.60      $ 10.81    $  12.25
                                             -------        -------      -------     -------      -------    --------
   Net investment income (loss) (a) ........    0.15           0.32         0.13       (0.06)       (0.07)      (0.00)(b)
   Net realized and unrealized gain (loss) on
     investments and securities sold short .    0.14          (0.02)          --       (0.05)       (0.14)      (1.44)
                                             -------        -------      -------     -------      -------    --------
   Total from investment operations ........    0.29           0.30         0.13       (0.11)       (0.21)      (1.44)
                                             -------        -------      -------     -------      -------    --------
DISTRIBUTIONS TO SHAREHOLDERS:
   Net investment income ...................      --          (0.38)       (0.18)         --           --          --
                                             -------        -------      -------     -------      -------    --------
   Total distributions .....................      --          (0.38)       (0.18)         --           --          --
                                             -------        -------      -------     -------      -------    --------
   REDEMPTION FEES .........................      --             --         0.00(b)       --           --          --
                                             -------        -------      -------     -------      -------    --------
   NET ASSET VALUE, END OF PERIOD .......... $ 10.65        $ 10.36      $ 10.44     $ 10.49      $ 10.60    $  10.81
                                             =======        =======      =======     =======      =======    ========
   Total return + ..........................   2.80%          2.88%        1.23%     (1.04)%      (1.94)%    (11.76)%
                                             =======        =======      =======     =======      =======    ========
RATIOS TO AVERAGE NET ASSETS AND
   SUPPLEMENTAL DATA:
   Net assets, end of period (in 000's) .... $30,253        $31,103      $37,614     $41,258      $60,846     $80,827
   Ratio of net investment income (loss) to
     average net assets ....................   2.84%(c)       2.99%        1.27%     (0.61)%      (0.61)%     (0.00)%
   Ratio of operating expenses to average
     net assets ............................   2.18%(c)       2.14%        2.14%       1.90%        1.67%       1.63%
   Ratio of operating expenses to average
     net assets excluding the effect of
     dividends on securities sold short ....   1.98%(c)       1.87%        1.85%       1.77%        1.64%       1.61%
   Portfolio turnover rate .................     69%           121%         149%        176%         244%        776%

- ---------------
  + Total return  represents  aggregate  total return of a  hypothetical  $1,000
    investment  at the beginning of the period and sold at the end of the period
    including  reinvestment of distributions.  Total return for a period of less
    than one year is not annualized.
(a) Per Share data is calculated  using the average shares  outstanding  method.
(b) Amount represents less than $0.005 per share.
(c) Annualized.

                 See accompanying notes to financial statements.

                                       11



                               GAMCO MATHERS FUND
                              One Corporate Center
                            Rye, New York 10580-1422
                                  800-GABELLI
                                  800-422-3554
                               FAX: 914-921-5118
                            WEBSITE: WWW.GABELLI.COM
                            E-MAIL: INFO@GABELLI.COM
                           Net Asset Value per share
                           available daily by calling
                           800-GABELLI after 6:00 P.M.

                               BOARD OF TRUSTEES

Mario J. Gabelli, CFA                             Anthony R. Pustorino
CHAIRMAN AND CHIEF                                CERTIFIED PUBLIC ACCOUNTANT,
EXECUTIVE OFFICER                                 PROFESSOR EMERITUS
GAMCO INVESTORS, INC.                             PACE UNIVERSITY

E. Val Cerutti                                    Werner J. Roeder,  MD
CHIEF EXECUTIVE  OFFICER                          MEDICAL  DIRECTOR
CERUTTI CONSULTANTS, INC.                         LAWRENCE HOSPITAL

Anthony J. Colavita                               Henry G. Van der Eb, CFA
ATTORNEY-AT-LAW                                   PRESIDENT AND CHIEF
ANTHONY J. COLAVITA, P.C.                         EXECUTIVE OFFICER
                                                  GAMCO MATHERS FUND
Vincent D. Enright
FORMER SENIOR VICE PRESIDENT                      Anthonie C. van Ekris
AND CHIEF FINANCIAL OFFICER                       CHAIRMAN
KEYSPAN ENERGY CORP.                              BALMAC INTERNATIONAL, INC.


                         OFFICERS AND PORTFOLIO MANAGER

Henry G. Van der Eb, CFA                          Anne E. Morrissy, CFA
PRESIDENT AND                                     EXECUTIVE VICE PRESIDENT
PORTFOLIO MANAGER
                                                  Heidi M. Koontz
Bruce N. Alpert                                   VICE PRESIDENT
EXECUTIVE VICE PRESIDENT
                                                  Edith L. Cook
Agnes Mullady                                     VICE PRESIDENT
TREASURER
                                                  Peter D. Goldstein
James E. McKee                                    CHIEF COMPLIANCE OFFICER
VICE PRESIDENT
AND SECRETARY

                                   DISTRIBUTOR
                             Gabelli & Company, Inc.

                  CUSTODIAN, TRANSFER AGENT, AND DIVIDEND AGENT
                       State Street Bank and Trust Company

                                  LEGAL COUNSEL
                      Paul, Hastings, Janofsky & Walker LLP

- --------------------------------------------------------------------------------
This report is submitted for the general  information of the shareholders of The
GAMCO  Mathers  Fund.  It is not  authorized  for  distribution  to  prospective
investors unless preceded or accompanied by an effective prospectus.
- --------------------------------------------------------------------------------
GAB1726Q207SR




                                                                           GAMCO




                                                               GAMCO
                                                               MATHERS
                                                               FUND






                                                              SEMI-ANNUAL REPORT
                                                                   JUNE 30, 2007




ITEM 2.  CODE OF ETHICS.

Not applicable.



ITEM 3.  AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable.



ITEM 4.  PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable.



ITEM 5.  AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable.



ITEM 6.  SCHEDULE OF INVESTMENTS.

Schedule of Investments in securities of unaffiliated issuers as of the close of
the  reporting  period is included as part of the report to  shareholders  filed
under Item 1 of this form.



ITEM 7.  DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END
         MANAGEMENT INVESTMENT COMPANIES.

Not applicable.


ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.


ITEM 9.  PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT
         COMPANY AND AFFILIATED PURCHASERS.

Not applicable.



ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There have been no material  changes to the procedures by which the shareholders
may  recommend  nominees  to the  registrant's  Board of  Trustees,  where those
changes were  implemented  after the  registrant  last  provided  disclosure  in
response to the  requirements  of Item  407(c)(2)(iv)  of Regulation S-K (17 CFR
229.407) (as required by Item  22(b)(15) of Schedule 14A (17 CFR  240.14a-101)),
or this Item.


ITEM 11. CONTROLS AND PROCEDURES.

     (a)  The registrant's principal executive and principal financial officers,
          or persons  performing  similar  functions,  have  concluded  that the
          registrant's  disclosure  controls and  procedures (as defined in Rule
          30a-3(c)  under the  Investment  Company Act of 1940,  as amended (the
          "1940 Act") (17 CFR 270.30a-3(c))) are effective,  as of a date within
          90 days of the filing date of the report that includes the  disclosure
          required  by this  paragraph,  based  on  their  evaluation  of  these
          controls and  procedures  required by Rule 30a-3(b) under the 1940 Act
          (17 CFR  270.30a-3(b))  and Rules  13a-15(b)  or  15d-15(b)  under the
          Securities  Exchange Act of 1934, as amended (17 CFR  240.13a-15(b) or
          240.15d-15(b)).


     (b)  There  were no  changes  in the  registrant's  internal  control  over
          financial  reporting (as defined in Rule  30a-3(d)  under the 1940 Act
          (17 CFR  270.30a-3(d))  that occurred during the  registrant's  second
          fiscal  quarter  of  the  period  covered  by  this  report  that  has
          materially affected, or is reasonably likely to materially affect, the
          registrant's internal control over financial reporting.


ITEM 12. EXHIBITS.

     (a)(1)  Not applicable.

     (a)(2)  Certifications  pursuant  to Rule  30a-2(a)  under the 1940 Act and
             Section 302 of the Sarbanes-Oxley Act of 2002 are attached hereto.

     (a)(3)  Not applicable.

     (b)     Certifications pursuant to Rule 30a-2(b)  under  the  1940  Act and
             Section 906 of the Sarbanes-Oxley Act of 2002 are attached hereto.







                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  Exchange  Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

(registrant) The GAMCO Mathers Fund
            --------------------------------------------------------------------

By (Signature and Title)*  /s/ Henry G. Van der Eb
                         -------------------------------------------------------
                           Henry G. Van der Eb, Chief Executive Officer


Date              August 14, 2007
    ----------------------------------------------------------------------------


Pursuant to the  requirements  of the  Securities  Exchange  Act of 1934 and the
Investment  Company  Act of  1940,  this  report  has been  signed  below by the
following  persons on behalf of the  registrant and in the capacities and on the
dates indicated.


By (Signature and Title)*  /s/ Henry G. Van der Eb
                         -------------------------------------------------------
                           Henry G. Van der Eb, Chief Executive Officer


Date              August 14, 2007
    ----------------------------------------------------------------------------


By (Signature and Title)*  /s/ Agnes Mullady
                         -------------------------------------------------------
                           Agnes Mullady, Principal Financial Officer
                           & Treasurer


Date              August 31, 2007
    ----------------------------------------------------------------------------



* Print the name and title of each signing officer under his or her signature.