DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
485BPOS, 1998-02-26
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<PAGE>
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 26, 1998
 
                                                    REGISTRATION NOS.:  33-32763
                                                                        811-5987
 
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                ----------------
 
                                   FORM N-1A
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933                     /X/
                          PRE-EFFECTIVE AMENDMENT NO.
                                      ----                                   / /
                        POST-EFFECTIVE AMENDMENT NO. 9                       /X/
                                     AND/OR
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940                                /X/
                               AMENDMENT NO. 10                              /X/
 
                              -------------------
 
               DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
 
                        (A MASSACHUSETTS BUSINESS TRUST)
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600
 
                                BARRY FINK, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
 
                            DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                             WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036
 
                                ----------------
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
 
 As soon as practicable after this Post-Effective Amendment becomes effective.
 
 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)
 
        ____ immediately upon filing pursuant to paragraph (b)
 
        _X_ on February 26, 1998 pursuant to paragraph (b)
 
        ___ 60 days after filing pursuant to paragraph (a)
 
        ___ on (date) pursuant to paragraph (a) of rule 485.
 
           AMENDING THE PROSPECTUS AND UPDATING FINANCIAL STATEMENTS
 
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<PAGE>
               DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
 
                             CROSS-REFERENCE SHEET
 
                                   FORM N-1A
 
<TABLE>
<CAPTION>
ITEM                                                                         CAPTION
- ---------------------------------------------  -------------------------------------------------------------------
<S>                                            <C>
PART A                                                                     PROSPECTUS
 1.  ........................................  Cover Page
 
 2.  ........................................  Prospectus Summary; Summary of Fund Expenses
 
 3.  ........................................  Financial Highlights; Report of Independent Accountants; Financial
                                                Statements; Performance Information
 
 4.  ........................................  Investment Objective and Policies; The Fund and its Management;
                                                Cover Page; Investment Restrictions; Prospectus Summary; Financial
                                                Highlights
 
 5.  ........................................  The Fund and Its Management; Back Cover; Investment Objective and
                                                Policies
 
 6.  ........................................  Dividends, Distributions and Taxes; Additional Information
 
 7.  ........................................  Purchase of Fund Shares; Shareholder Services; Prospectus Summary
 
 8.  ........................................  Redemption of Fund Shares; Shareholder Services; Prospectus Summary
 
 9.  ........................................  Not Applicable
 
PART B                                                         STATEMENT OF ADDITIONAL INFORMATION
10.  ........................................  Cover Page
 
11.  ........................................  Table of Contents
 
12.  ........................................  The Fund and Its Management
 
13.  ........................................  Investment Practices and Policies; Investment Restrictions;
                                                Portfolio Transactions and Brokerage
 
14.  ........................................  The Fund and its Management; Trustees and Officers
 
15.  ........................................  The Fund and its Management; Trustees and Officers
 
16.  ........................................  The Fund and Its Management; Purchase of Fund Shares; Custodian and
                                                Transfer Agent; Independent Accountants
 
17.  ........................................  Portfolio Transactions and Brokerage
 
18.  ........................................  Description of Shares
 
19.  ........................................  Purchase of Fund Shares; Redemptions of Fund Shares; Financial
                                                Statements; How Net Asset Value is Determined; Shareholder
                                                Services
 
20.  ........................................  Dividends, Distributions and Taxes
 
21.  ........................................  Purchase of Fund Shares
 
22.  ........................................  Performance
 
23.  ........................................  Experts; Financial Statements; Reports to Shareholders
</TABLE>
 
PART C
 
    Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.
<PAGE>
   
              PROSPECTUS
              FEBRUARY 26, 1998
    
 
              Dean Witter New York Municipal Money Market Trust (the "Fund") is
a no-load, open-end, non-diversified management investment company whose
investment objective is to provide as high a level of daily income exempt from
federal and New York income tax as is consistent with stability of principal and
liquidity. The Fund has a Rule 12b-1 Plan of Distribution (see below). The Fund
seeks to achieve its objective by investing primarily in high quality New York
tax-exempt securities with short-term maturities, including Municipal Bonds,
Municipal Notes and Municipal Commercial Paper. (See "Investment Objective and
Policies.") The Fund may invest a significant percentage of its assets in the
securities of a single issuer and therefore an investment in the Fund may be
riskier than an investment in other types of money funds.
 
               AN INVESTMENT IN THE FUND IS NEITHER INSURED NOR GUARANTEED BY
THE U.S. GOVERNMENT. THERE IS NO ASSURANCE THAT THE FUND WILL BE ABLE TO
MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
 
               In accordance with a Plan of Distribution with Dean Witter
Distributors Inc. pursuant to Rule 12b-1 under the Investment Company Act of
1940, the Fund is authorized to reimburse specific expenses incurred in
promoting the distribution of the Fund's shares. Reimbursement may in no event
exceed an amount equal to payments at the annual rate of 0.15 of 1% of the
average daily net assets of the Fund.
 
   
               This Prospectus sets forth concisely the information you should
know before investing in the Fund. It should be read and retained for future
reference. Additional information about the Fund is contained in the Statement
of Additional Information, dated February 26, 1998, which has been filed with
the Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at its address or at one of its telephone numbers listed on
this page. The Statement of Additional Information is incorporated herein by
reference.
    
 
     DEAN WITTER DISTRIBUTORS INC.
      DISTRIBUTOR
 
      TABLE OF CONTENTS
 
   
Prospectus Summary/2
Summary of Fund Expenses/3
Financial Highlights/4
The Fund and its Management/4
Investment Objective and Policies/5
  Special Considerations Relating to New York
  Tax-Exempt Securities/8
Investment Restrictions/9
Purchase of Fund Shares/10
Shareholder Services/12
Redemption and Repurchase of Fund Shares/15
Dividends, Distributions and Taxes/18
Additional Information/20
Financial Statements--December 31, 1998/22
Report of Independent Accountants/31
    
 
For information about the Fund, including information on opening an account,
registration of shares, and other information relating to a specific account,
call:
 
  -  800-869-NEWS (toll-free) or
  -  212-392-2550
 
<TABLE>
<S>                                            <C>
Minimum initial investment..................   $5,000
Minimum additional investment...............   $  100
</TABLE>
 
SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK, AND THE SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT
INSURANCE CORPORATION, FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
 
    Dean Witter
    New York Municipal Money Market Trust
    Two World Trade Center
    New York, New York 10048
<PAGE>
PROSPECTUS SUMMARY
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<TABLE>
<S>                 <C>
The                 The Fund is organized as a Trust, commonly known as a Massachusetts business trust, and is an open-end,
Fund                non-diversified management investment company investing principally in short-term securities which are exempt
                    from federal and New York income tax.
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Shares Offered      Shares of beneficial interest with $0.01 par value. (see p. 20).
- ------------------------------------------------------------------------------------------------------------------------------------
Purchase of Shares  Investments may be made:
                    - By wire
                    - By mail
                    - Through Dean Witter Reynolds Inc. account executives or other Selected Broker-Dealers
                    Purchases are at net asset value, without a sales charge. Minimum initial investment: $5,000. Subsequent
                    investments: $100 or more (by wire or by mail); $1,000 or more (through account executives) or $100 to $5,000
                    (by EasyInvest-SM-). Orders for purchase of shares are effective on day of receipt of payment in Federal funds
                    if payment is received by the Fund's transfer agent before 12:00 noon New York time (see p. 10).
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Investment          To provide as high a level of daily income exempt from federal and New York income tax as is consistent with
Objective           stability of principal and liquidity (see p. 5).
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Investment          A portfolio of New York tax-exempt fixed-income securities with short-term maturities (see p. 5).
Policy
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Investment          Dean Witter InterCapital Inc. ("InterCapital"), the Investment Manager of the Fund and its wholly-owned
Manager             subsidiary, Dean Witter Services Company Inc., serve in various investment management, advisory, management and
                    administrative capacities to 103 investment companies and other portfolios with assets of approximately $105
                    billion at January 31, 1998 (see page 4). The monthly fee is at an annual rate of 1/2 of
                    1% of average daily net assets, scaled down on assets over $500 million (see p. 4-5).
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Distributor and     Dean Witter Distributors Inc. (the "Distributor") is the Fund's Distributor. The Fund is authorized to reimburse
Plan of             specific expenses incurred in promoting the distribution of the Fund's shares pursuant to a Plan of Distribution
Distribution        pursuant to Rule 12b-1 under the Investment Company Act of 1940. Reimbursement may in no event exceed an amount
                    equal to payments at the annual rate of 0.15 of 1% of average daily net assets of the Fund (see p. 10-12).
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Management          The monthly fee is at an annual rate of 1/2 of 1% of average daily net assets, scaled down on assets over $500
Fee                 million (see p. 5).
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Dividends           Declared and automatically reinvested daily in additional shares; cash payments of dividends available
                    monthly (see p. 18).
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Reports             Individual periodic account statements; annual and semi-annual Fund financial statements.
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Redemption of       Shares are redeemable by the shareholder at net asset value without any charge (see p. 15):
Shares              - By check
                    - By telephone or wire instructions, with proceeds wired or mailed to a predesignated bank account
                    - By mail
                    - Via an automatic redemption procedure (see p. 17)
                    A shareholder's account is subject to possible involuntary redemption if its value falls below $1,000
                    (see p. 17).
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Risks               The Fund invests principally in short-term fixed income securities issued or guaranteed by the State of New York
                    and its local governments which are subject to minimal risk of loss of income and principal. However, the
                    investor is directed to the discussions concerning "variable rate obligations" and "when-issued and delayed
                    delivery securities" on page 8 of the Prospectus and on page 14 of the Statement of Additional Information and
                    the discussions concerning "repurchase agreements" and "puts" on pages 14-16 of the Statement of Additional
                    Information, concerning any risks associated with such portfolio securities and management techniques. Since the
                    Fund concentrates its investments in New York tax-exempt securities, the Fund is affected by any political,
                    economic or regulatory developments affecting the ability of New York issuers to pay interest or repay principal
                    (see pages 19-24 of the Statement of Additional Information).
</TABLE>
    
 
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  THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING
         ELSEWHERE IN THE PROSPECTUS AND IN THE STATEMENT OF ADDITIONAL
                                  INFORMATION.
 
                                       2
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------
 
   
    The following table illustrates all expenses and fees that a shareholder of
the Fund will incur. Expenses and fees set forth in the table are for the year
ended December 31, 1997.
    
 
<TABLE>
<S>                                                                             <C>
SHAREHOLDER TRANSACTION EXPENSES
- ---------------------------------------------------------------------------
Maximum Sales Charge Imposed on Purchases..................................     None
Maximum Sales Charge Imposed on Reinvested Dividends.......................     None
Deferred Sales Charge......................................................     None
Redemption Fees............................................................     None
Exchange Fee...............................................................     None
</TABLE>
 
   
<TABLE>
<S>                                                                                     <C>
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS)
- --------------------------------------------------------------------------------------
Management Fees.......................................................................      0.50%
12b-1 Fee*............................................................................      0.10%
Other Expenses........................................................................      0.36%
Total Fund Operating Expenses.........................................................      0.96%
</TABLE>
    
 
- ------------
   
* THE 12b-1 FEE IS CHARACTERIZED AS A SERVICE FEE WITHIN THE MEANING OF NATIONAL
  ASSOCIATION OF SECURITIES DEALERS, INC. ("NASD") GUIDELINES (SEE "PURCHASE OF
  FUND SHARES").
    
 
   
<TABLE>
<CAPTION>
EXAMPLE                                                                   1 Year       3 Years      5 Years     10 Years
- ----------------------------------------------------------------------  -----------  -----------  -----------  -----------
<S>                                                                     <C>          <C>          <C>          <C>
You would pay the following expenses on a $1,000 investment, assuming
 (1) 5% annual return and (2) redemption at the end of each time
 period...............................................................   $      10    $      31    $      53    $     118
</TABLE>
    
 
    THE ABOVE EXAMPLE SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES OF THE FUND MAY BE GREATER OR
LESS THAN THOSE SHOWN.
 
    The purpose of this table is to assist the investor in understanding the
various costs and expenses that an investor in the Fund will bear directly or
indirectly. For a more complete description of these costs and expenses, see
"The Fund and Its Management" and "Purchase of Fund Shares--Plan of
Distribution" in this Prospectus.
 
                                       3
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
 
   
    The following ratios and per share data for a share of beneficial interest
outstanding throughout each period have been audited by Price Waterhouse LLP,
independent accountants. The financial highlights should be read in conjunction
with the financial statements, notes thereto and the unqualified report of the
independent accountants which are contained in this Prospectus commencing on
page 22.
    
   
<TABLE>
<CAPTION>
                                                            FOR THE YEAR ENDED DECEMBER 31,
                                ---------------------------------------------------------------------------------------
                                   1997          1996            1995           1994       1993       1992       1991
                                -----------   -----------      ---------      --------   --------   --------   --------
<S>                             <C>           <C>              <C>            <C>        <C>        <C>        <C>
PER SHARE OPERATING
  PERFORMANCE:
  Net asset value, beginning
   of period..................  $      1.00   $      1.00      $    1.00      $   1.00   $   1.00   $   1.00   $   1.00
                                -----------   -----------      ---------      --------   --------   --------   --------
  Net investment income.......        0.026         0.025          0.028         0.018      0.014      0.019      0.035
  Less dividends from net
   investment income..........       (0.026)       (0.025)        (0.028)       (0.018)    (0.014)    (0.019)    (0.035)
                                -----------   -----------      ---------      --------   --------   --------   --------
  Net asset value, end of
   period.....................  $      1.00   $      1.00      $    1.00      $   1.00   $   1.00   $   1.00   $   1.00
                                -----------   -----------      ---------      --------   --------   --------   --------
                                -----------   -----------      ---------      --------   --------   --------   --------
TOTAL INVESTMENT RETURN+......        2.68%         2.53%          2.84%         1.78%      1.36%      1.86%      3.57%
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period,
   in thousands...............      $49,336       $40,758        $39,108       $39,629    $41,112    $45,126    $66,196
  Ratios to average net
   assets:
    Expenses..................        0.96%(4)       0.95%(4)      1.01%(4)      1.03%      1.03%      0.97%      0.87%
    Net investment income.....        2.64%         2.48%          2.79%         1.75%      1.34%      1.86%      3.53%
 
<CAPTION>
                                 FOR THE PERIOD
                                 MARCH 20, 1990*
                                     THROUGH
                                DECEMBER 31, 1990
                                -----------------
<S>                             <C>
PER SHARE OPERATING
  PERFORMANCE:
  Net asset value, beginning
   of period..................      $   1.00
                                     -------
  Net investment income.......         0.045
  Less dividends from net
   investment income..........        (0.045)
                                     -------
  Net asset value, end of
   period.....................      $   1.00
                                     -------
                                     -------
TOTAL INVESTMENT RETURN+......         4.69%(1)
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period,
   in thousands...............      $101,294
  Ratios to average net
   assets:
    Expenses..................         0.12%(2)(3)
    Net investment income.....         5.66%(2)(3)
</TABLE>
    
 
- ---------------
 *  COMMENCEMENT OF OPERATIONS.
 
 +  CALCULATED BASED ON THE NET ASSET VALUE AS OF THE LAST BUSINESS DAY OF THE
    PERIOD.
 
(1) NOT ANNUALIZED.
 
(2) ANNUALIZED.
 
(3) IF THE FUND HAD BORNE ALL EXPENSES THAT WERE ASSUMED OR WAIVED BY THE
    INVESTMENT MANAGER, THE ABOVE ANNUALIZED EXPENSE AND NET INVESTMENT INCOME
    RATIOS WOULD HAVE BEEN 0.80% AND 4.98%, RESPECTIVELY.
 
   
(4) DOES NOT REFLECT THE EFFECT OF THE EXPENSE OFFSET OF 0.01%.
    
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
    Dean Witter New York Municipal Money Market Trust (the "Fund") is an
open-end, non-diversified management investment company. The Fund was organized
as a trust of the type commonly known as a "Massachusetts business trust" on
December 28, 1989. Prior to February 19, 1993, the Fund's name was Dean
Witter/Sears New York Municipal Money Market Trust.
 
   
    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
Investment Manager. The Investment Manager, which was incorporated in July,
1992, is a wholly-owned subsidiary of Morgan Stanley, Dean Witter, Discover &
Co., a preeminent global financial services firm that maintains leading market
positions
    
 
                                       4
<PAGE>
   
in each of its three primary businesses--securities, asset management and credit
services.
    
 
   
    InterCapital and its wholly-owned subsidiary, Dean Witter Services Company
Inc., serve in various investment management, advisory, management and
administrative capacities to a total of 103 investment companies, twenty-nine of
which are listed on the New York Stock Exchange, with combined total assets
including this Fund of approximately $101 billion as of January 31, 1998. The
Investment Manager also manages portfolios of pension plans, other institutions
and individuals which aggregated approximately $4 billion at such date.
    
 
   
    The Fund has retained the Investment Manager to provide administrative
services, manage its business affairs and manage the investment of the Fund's
assets, including the placing of orders for the purchase and sale of portfolio
securities. InterCapital has retained Dean Witter Services Company Inc. to
perform the aforementioned administrative services for the Fund. The Fund's
Board of Trustees reviews the various services provided by or under the
direction of the Investment Manager to ensure that the Fund's general investment
policies and programs are being properly carried out and that administrative
services are being provided to the Fund in a satisfactory manner.
    
 
   
    As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund assumed by the Investment Manager, the Fund pays the
Investment Manager monthly compensation calculated daily at an annual rate of
0.50% of the daily net assets of the Fund up to $500 million, scaled down at
various asset levels to 0.25% on assets over $3 billion. For the fiscal year
ended December 31, 1997, the Fund accrued total compensation to the Investment
Manager amounting to 0.50% of the Fund's average daily net assets and the Fund's
total expenses amounted to 0.96% of the Fund's average daily net assets.
    
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
    The investment objective of the Fund is to provide as high a level of daily
income exempt from federal and New York income tax as is consistent with
stability of principal and liquidity. It is a fundamental policy of the Fund
that at least 80% of its total assets will be invested in tax-exempt Municipal
Obligations and at least 65% of the Fund's total assets will be invested in New
York Municipal Obligations. The interest on New York Municipal Obligations is
exempt from Federal, New York State and New York City income taxes. Municipal
Obligations other than New York Municipal Obligations are exempt from Federal
tax but not from New York State and New York City taxes. However, certain
Municipal Obligations in which the Fund may invest without limit may subject
certain investors to the alternative minimum tax and, therefore, a substantial
portion of the income produced by the Fund may be taxable for such investors
under the alternative minimum tax. The Fund, therefore, may not ordinarily be a
suitable investment for investors who are subject to the alternative minimum
tax. The suitability of the Fund for these investors will depend upon a
comparison of the after-tax yield likely to be provided from the Fund to
comparable tax-exempt investments not subject to such tax and also to comparable
fully taxable investments in light of each such investor's tax position (see
"Dividends, Distributions and Taxes"). This policy and the Fund's investment
objective may not be changed without a vote of a majority of the Fund's
outstanding voting securities, as defined in the Investment Company Act of 1940,
as amended (the "Act"). There is no assurance that the objective will be
achieved.
 
    The Fund seeks to achieve its investment objective by investing in high
quality tax-exempt securities with short-term maturities (remaining maturities
of thirteen months or less) as follows.
 
                                       5
<PAGE>
   
Such securities will include (i) New York Municipal Bonds, New York Municipal
Notes and New York Municipal Commercial Paper, which are rated at the time of
purchase in one of the two highest rating categories for debt obligations by at
least two nationally recognized statistical rating organizations ("NRSROs"),
primarily Moody's Investors Service, Inc. ("Moody's") or Standard and Poor's
Corporation ("S&P"), or one NRSRO if the obligation is rated by only one NRSRO.
Unrated obligations may be purchased if they are determined to be of comparable
quality by the Fund's Trustees.
    
 
    Up to 35% of the Fund's total assets may be invested in securities exempt
from federal income tax but not from New York State and New York City income
taxes ("non-New York tax-exempt securities") and up to 20% of the Fund's total
assets may be invested in taxable securities. In addition, the Fund may
temporarily invest more than 20% of its total assets in taxable securities and
more than 35% of its total assets in non-New York tax-exempt securities to
maintain a "defensive" posture when, in the opinion of the Investment Manager,
prevailing market or financial conditions so warrant. The types of taxable
securities in which the Fund may temporarily invest are limited to the following
short-term fixed-income securities (maturing in one year or less from the time
of purchase); (i) obligations of the United States Government or its agencies,
instrumentalities or authorities; (ii) commercial paper rated P-1 by Moody's or
A-1 by S&P; (iii) certificates of deposit of domestic banks with assets of $1
billion or more; and (iv) repurchase agreements with respect to any of the
foregoing portfolio securities.
 
   
    Municipal Bonds and Municipal Notes are debt obligations of a state, its
cities, municipalities and municipal agencies which generally have maturities,
at the time of their issuance, of either one year or more (Bonds) or from six
months to three years (Notes). Municipal Commercial Paper refers to short-term
obligations of municipalities which may be issued at a discount and are
sometimes referred to as Short-Term Discount Notes. Any Municipal Bond or
Municipal Note which depends directly or indirectly on the credit of the Federal
Government, its agencies or instrumentalities shall be considered to have a
Moody's rating of Aaa or a S&P rating of AAA. An obligation shall be considered
a New York Municipal Bond, New York Municipal Note or New York Municipal
Commercial Paper only if, in the opinion of bond counsel, the interest payable
therefrom is exempt from both federal income tax and New York personal income
tax.
    
 
    The foregoing percentage and rating limitations apply at the time of
acquisition of a security based on the last previous determination of the Fund's
net asset value. Any subsequent change in any rating by a rating service or
change in percentages resulting from market fluctuations or other changes in
total assets will not require elimination of any security from the Fund's
portfolio. However, in accordance with procedures adopted by the Fund's Trustees
pursuant to federal securities regulations governing money market funds, if the
Investment Manager becomes aware that a portfolio security has received a new
rating from an NRSRO that is below the second highest rating, then, unless the
security is disposed of within five days, the Investment Manager will perform a
creditworthiness analysis of any such downgraded securities, which will be
reported to the Trustees who will, in turn, determine whether the securities
continue to present minimal credit risks to the Fund.
 
    The ratings assigned by NRSROs represent their opinions as to the quality of
the securities which they undertake to rate (see the Appendix to the Statement
of Additional Information). It should be emphasized, however, that the ratings
are general and not absolute standards of quality.
 
    The two principal classifications of Municipal Bonds, Notes and Commercial
Paper are "general obligation" and "revenue" bonds, notes or commercial paper.
General obligation bonds, notes or commercial paper are secured by the issuer's
pledge of its faith, credit and taxing power for the payment of principal and
interest. Issuers of general obligation bonds, notes or commercial paper
 
                                       6
<PAGE>
include a state, its counties, cities, towns and other governmental units.
Revenue bonds, notes or commercial paper are payable from the revenues derived
from a particular facility or class of facilities or, in some cases, from
specific revenue sources. Revenue bonds, notes or commercial paper are issued
for a wide variety of purposes, including the financing of electric, gas, water
and sewer systems and other public utilities; industrial development and
pollution control facilities; single and multifamily housing units; public
buildings and facilities; air and marine ports; transportation facilities such
as toll roads, bridges and tunnels; and health and educational facilities such
as hospitals and dormitories. They rely primarily on user fees to pay debt
service, although the principal revenue source is often supplemented by
additional security features which are intended to enhance the creditworthiness
of the issuer's obligations. In some cases, particularly revenue bonds issued to
finance housing and public buildings, a direct or implied "moral obligation" of
a governmental unit may be pledged to the payment of debt service. In other
cases, a special tax or other charge may augment user fees.
 
    Included within the revenue bonds category are participations in lease
obligations or installment purchase contracts (hereinafter collectively called
"lease obligations") of municipalities. State and local governments issue lease
obligations to acquire equipment and facilities.
 
    Lease obligations may have risks not normally associated with general
obligation or other revenue bonds. Leases and installment purchase or
conditional sale contracts (which may provide for title to the leased asset to
pass eventually to the issuer) have developed as a means for governmental
issuers to acquire property and equipment without the necessity of complying
with the constitutional and statutory requirements generally applicable for the
issuance of debt. Certain lease obligations contain "non-appropriation" clauses
that provide that the governmental issuer has no obligation to make future
payments under the lease or contract unless money is appropriated for such
purpose by the appropriate legislative body on an annual or other periodic
basis. Consequently, continued lease payments on those lease obligations
containing "non-appropriation" clauses are dependent on future legislative
actions. If such legislative actions do not occur, the holders of the lease
obligation may experience difficulty in exercising their rights, including
disposition of the property.
 
    Certain lease obligations have not yet developed the depth of marketability
associated with more conventional municipal obligations, and, as a result,
certain of such lease obligations may be considered illiquid securities. To
determine whether or not the Fund will consider such securities to be illiquid
(the Fund may not invest more than ten percent of its net assets in illiquid
securities), the Trustees of the Fund have established guidelines to be utilized
by the Fund in determining the liquidity of a lease obligation. The factors to
be considered in making the determination include: (1) the frequency of trades
and quoted prices for the obligation; (2) the number of dealers willing to
purchase or sell the security and the number of other potential purchasers; (3)
the willingness of dealers to undertake to make a market in the security; and
(4) the nature of the marketplace trades, including the time needed to dispose
of the security, the method of soliciting offers, and the mechanics of the
transfer.
 
   
    The Fund is classified as a non-diversified investment company under the
Act. However, as a result of recent amendments adopted by the Securities and
Exchange Commission to Rule 2a-7 under the Act, which amendments revised the
diversification requirements for tax-exempt money market funds, the Fund can no
longer operate as a "non-diversified" fund. Consequently, with respect to 75% of
its total assets, the Fund may not invest more than 5% of its total assets in
the securities of any one issuer other than the stated exceptions pursuant to
Rule 2a-7 under the Act, and, with respect to 25% of its total assets, the Fund
may invest more than 5% of its total assets in the securities of any one issuer
as provided under Rule 2a-7 under the Act.
    
 
                                       7
<PAGE>
    The Fund may invest more than 25% of its total assets in industrial
development and pollution control bonds (two kinds of tax-exempt Municipal
Bonds) whether or not the users of facilities financed by such bonds are in the
same industry. In cases where such users are in the same industry, there may be
additional risk to the Fund in the event of an economic downturn in such
industry, which may result generally in a lowered need for such facilities and a
lowered ability of such users to pay for the use of such facilities.
 
    The high quality, short-term fixed-income securities in which the Fund
principally invests are guaranteed by state and local governments and are
subject to minimal risk of loss of income and principal.
 
PORTFOLIO MANAGEMENT
 
    Although the Fund will generally acquire securities for investment with the
intent of holding them to maturity and will not seek profits through short-term
trading, the Fund may dispose of any security prior to its maturity to meet
redemption requests. Securities may also be sold when the Fund's Investment
Manager believes such disposition to be advisable on the basis of a revised
evaluation of the issuer or based upon relevant market considerations. There may
be occasions when, as a result of maturities of portfolio securities or sale of
Fund shares, or in order to meet anticipated redemption requests, the Fund may
hold cash which is not earning income.
 
    The Fund anticipates that the average weighted maturity of the portfolio
will be 90 days or less. The relatively short-term nature of the Fund's
portfolio is expected to result in a lower yield than portfolios comprised of
longer-term tax-exempt securities.
 
    VARIABLE RATE AND FLOATING RATE OBLIGATIONS. The interest rates payable on
certain Municipal Bonds and Municipal Notes are not fixed and may fluctuate
based upon changes in market rates. Municipal obligations of this type are
called "variable rate" or "floating rate" obligations. The interest rate payable
on a variable rate obligation is adjusted either at predesignated periodic
intervals or whenever there is a change in the market rate of interest on which
the interest rate payable is based.
 
    WHEN-ISSUED AND DELAYED DELIVERY SECURITIES. The Fund may purchase
tax-exempt securities on a when-issued or delayed delivery basis; i.e., delivery
and payment can take place a month or more after the date of the transaction.
These securities are subject to market fluctuation and no interest accrues to
the purchaser prior to settlement. At the time the Fund makes the commitment to
purchase such securities, it will record the transaction and thereafter reflect
the value, each day, of such securities in determining its net asset value.
 
   
    Notwithstanding any other investment policy or restriction, the Fund may
seek to achieve its investment objective by investing all or substantially all
of its assets in another investment company having substantially the same
investment objective and policies as the Fund.
    
 
   
    BROKERAGE ALLOCATION.  Brokerage commissions are not normally charged on
purchases and sales of short-term municipal obligations, but such transactions
may involve transaction costs in the form of spreads between bid and asked
prices. Pursuant to an order of the Securities and Exchange Commission, the Fund
may effect principal transactions in certain money market instruments with Dean
Witter Reynolds Inc. ("DWR"), a broker-dealer affiliate of InterCapital. In
addition, the Fund may incur brokerage commissions on transactions conducted
through DWR, Morgan Stanley & Co. Incorporated and other broker-dealer
affiliates of InterCapital.
    
 
SPECIAL CONSIDERATIONS RELATING TO NEW YORK TAX-EXEMPT SECURITIES
 
   
    Since the Fund concentrates its investments in New York tax-exempt
securities, the Fund is affected by any political, economic or regulatory
developments affecting the ability of New York tax-exempt issuers to pay
interest or repay principal. Investors should be aware that certain issuers of
New York tax-exempt securities have experienced serious
    
 
                                       8
<PAGE>
financial difficulties in recent years. A reoccurrence of these difficulties may
impair the ability of certain New York issuers to maintain debt service on their
obligations.
 
    The fiscal stability of New York State (the "State") is related to the
fiscal stability of the State's municipalities, its Agencies and Authorities
(which generally finance, construct and operate revenue-producing public benefit
facilities). This is due in part to the fact that Agencies, Authorities and
local governments in financial trouble often seek State financial assistance.
The experience has been that if New York City (the "City") or any of the
Agencies or Authorities suffers serious financial difficulty, both the ability
of the State, the City, the State's political subdivisions, the Agencies and the
Authorities to obtain financing in the public credit markets and the market
price of outstanding New York tax-exempt securities are adversely affected.
 
    Over the long term, the State and City face potential economic problems. The
City accounts for a large portion of the State's population and personal income,
and the City's financial health affects the State in numerous ways. The City
continues to require significant financial assistance from the State. The City
depends on State aid both to enable the City to balance its budget and to meet
its cash requirements. The State could also be affected by the ability of the
City to market its securities successfully in the public credit markets.
 
    The economic and financial condition of the State also may be affected by
various financial, social, economic and political factors. Such factors can be
very complex, may vary from fiscal year to fiscal year and are frequently the
result of actions taken not only by the State and its agencies and
instrumentalities, but also by entities, such as the Federal government, that
are not under the control of the State.
 
   
    On January 13, 1992, S&P reduced its ratings on the State's general
obligation bonds from A to A- and, in addition, reduced its ratings on the
State's moral obligation, lease purchase, guaranteed and contractual obligation
debt. S&P also continued its negative rating outlook assessment on State general
obligation debt. On April 26, 1993, S&P revised the rating outlook assessment to
stable. On February 14, 1994, S&P raised its rating outlook to positive and, on
August 5, 1996, confirmed its A- rating. On August 28, 1997, S&P revised its
ratings on the State's general obligation bonds from A- to A and, in addition,
revised its ratings on the State's moral obligation, lease purchase, guaranteed
and contractual obligation debt. On January 6, 1992, Moody's reduced its ratings
on outstanding limited-liability State lease purchase and contractual
obligations from A to Baa1. On February 10, 1997, Moody's confirmed its A2
rating on the State's general obligation long-term indebtedness.
    
 
    For a more detailed discussion of New York economic factors, see the
Statement of Additional Information.
 
   
    The summary information furnished above and in the Statement of Additional
Information is based on official statements relating to offerings of New York
issuers of municipal securities on or prior to September 29, 1997 with respect
to offerings of the State and September 30, 1997 with respect to offerings of
the City, and it does not purport to be a complete description of the
considerations contained therein. No representation is made as to the accuracy
of such information.
    
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    The investment restrictions listed below are among the restrictions which
have been adopted by the Fund as fundamental policies. Under the Act, a
fundamental policy may not be changed without the vote of a majority of the
outstanding voting securities of the Fund, as defined in the Act.
 
                                       9
<PAGE>
    For purposes of the following restrictions: (a) an "issuer" of a security is
the entity whose assets and revenues are committed to the payment of interest
and principal on that particular security, provided that the guarantee of a
security will be considered a separate security and provided further that a
guarantee of a security shall not be deemed to be a security issued by the
guarantor if the value of all securities issued or guaranteed by the guarantor
and owned by the Fund does not exceed 10% of the value of the total assets of
the Fund; (b) a "taxable security" is any security the interest on which is
subject to federal income tax; and (c) all percentage limitations apply
immediately after a purchase or initial investment, and any subsequent change in
any applicable percentage resulting from market fluctuations or other changes in
total assets does not require elimination of any security from the portfolio.
 
    The Fund may not:
 
   1. Make loans of money or securities, except: (a) by the purchase of debt
obligations in which the Fund may invest consistent with its investment
objective and policies; and (b) by investment in repurchase agreements.
 
   2. Invest 25% or more of the value of its total assets in taxable securities
of issuers in any one industry (industrial development and pollution control
bonds are grouped into industries based upon the business in which the issuers
of such obligations are engaged). This restriction does not apply to obligations
issued or guaranteed by the United States Government, its agencies or
instrumentalities or to Municipal Obligations, including those issued by the
State of New York or its political subdivisions, or to domestic bank
obligations.
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
   
    The Fund offers its own shares for sale to the public on a continuous basis,
without a sales charge. Pursuant to a Distribution Agreement between the Fund
and Dean Witter Distributors Inc., (the "Distributor"), an affiliate of the
Investment Manager, shares of the Fund are distributed by the Distributor and
offered by DWR and other dealers who have entered into agreements with the
Distributor ("Selected Broker-Dealers"). The principal executive office of the
Distributor is located at Two World Trade Center, New York, New York 10048. The
offering price of the shares will be at their net asset value next determined
(see "Determination of Net Asset Value" below) after receipt of a purchase order
and acceptance by Dean Witter Trust FSB (the "Transfer Agent" or "DWT") in
proper form and accompanied by payment in Federal Funds (i.e., monies of member
banks within the Federal Reserve System held on deposit at a Federal Reserve
Bank) available to the Fund for investment. Shares commence earning income on
the day following the date of purchase. Share certificates will not be issued
unless requested in writing by the shareholder.
    
 
   
    To initiate purchase by mail or wire, a completed Investment Application
(contained in the Prospectus) must be sent directly to Dean Witter Trust FSB, at
P.O. Box 1040, Jersey City, N.J. 07303. Checks should be made payable to the
Dean Witter New York Municipal Money Market Trust and sent to Dean Witter Trust
FSB at the above address. Purchases by wire must be preceded by a call to the
Transfer Agent advising it of the purchase (see Investment Application or the
front cover of this Prospectus for the telephone number) and must be wired to
The Bank of New York, for credit to the
    
 
                                       10
<PAGE>
   
Account of Dean Witter Trust FSB, Harborside Financial Center, Plaza Two, Jersey
City, New Jersey, Account No. 8900188413. Wire purchase instructions must
include the name of the Fund and the shareholder's account number. Purchases
made by check are normally effective within two business days for checks drawn
on Federal Reserve System member banks, and longer for most other checks. Wire
purchases received by the Transfer Agent prior to 12:00 noon, New York time, are
normally effective that day, and wire purchases received after 12:00 noon, New
York time, are normally effective the next business day. Initial investments
must be at least $5,000. Subsequent investments must be $100 or more and may be
made through the Transfer Agent. In the case of investments pursuant to (i)
Systematic Payroll Deduction Plans, (ii) the InterCapital mutual fund asset
allocation program and (iii) fee-based programs approved by the Distributor,
pursuant to which participants pay an asset based fee for services in the nature
of investment advisory or administrative services, the Fund, in its discretion,
may accept investments without regard to any minimum amounts which would
otherwise be required, provided, in the case of Systematic Payroll Deduction
Plans, that the Distributor has reason to believe that additional investments
will increase the investment in all accounts under such Plans to at least
$5,000. The Fund will waive the minimum initial investment for the automatic
reinvestment of distributions from certain Unit Investment Trusts. The Fund and
the Distributor reserve the right to reject any purchase order.
    
 
    Sales personnel are compensated for selling shares of the Fund at the time
of their sale by the Distributor and/or Selected Broker-Dealer. In add ition,
some sales personnel of the Selected Broker-Dealer will receive various types of
non-cash compensation as special sales incentives, including trips, educational
and/or business seminars and merchandise.
 
    Orders for the purchase of Fund shares placed by customers through DWR or
other Selected Broker-Dealers with payment in clearing house funds will be
transmitted to the Fund with payment in Federal Funds on the business day
following the day the order is placed by the customer with DWR or another
Selected Broker-Dealer. Investors desiring same day effectiveness should wire
Federal Funds directly to the Transfer Agent. An order procedure pursuant to
which customers can, upon request; (a) have the proceeds from the sale of listed
securities invested in shares of the Fund on the day following the day the
customer receives such proceeds in his or her DWR or other Selected
Broker-Dealer brokerage account; and (b) pay for the purchase of certain listed
securities by automatic liquidation of Fund shares owned by the customer. In
addition, there is an automatic purchase procedure whereby consenting DWR or
another Selected Broker-Dealer customers who are shareholders of the Fund will
have free cash credit balances in their DWR or another Selected Broker-Dealer
brokerage accounts as of the close of business (4:00 P.M., New York time) on the
last business day of each week (where such balances do not exceed $5,000)
automatically invested in shares of the Fund the next following business day.
Investors with free cash credit balances (i.e., immediately available funds) in
brokerage accounts at DWR or other Selected Broker-Dealers will not have any of
such funds invested in the Fund until the business day after the customer places
an order with DWR or other Selected Broker-Dealers to purchase shares of the
Fund and will not receive the daily dividend which would have been received had
such funds been invested in the Fund on the day the order was placed with DWR or
other Selected Broker-Dealers. Accordingly, DWR or other Selected Broker-Dealers
may have the use of such free credit balances during such period.
 
PLAN OF DISTRIBUTION
 
    The Fund has entered into a Plan of Distribution with the Distributor,
pursuant to Rule 12b-1 under the Act, whereby the expenses of certain activities
in connection with the distribution of the Fund's shares are reimbursed. The
principal activities and services which may be provided by the Distributor, DWR,
its
 
                                       11
<PAGE>
   
affiliates or any other Selected Broker-Dealers under the Plan include: (1)
compensation to, and expenses of, DWR's and other Selected Broker-Dealers'
account executives and other employees, including overhead and telephone
expenses; (2) sales incentives and bonuses to sales representatives and to
marketing personnel in connection with promoting sales of the Fund's shares; (3)
expenses incurred in connection with promoting sales of the Fund's shares; (4)
preparing and distributing sales literature; and (5) providing advertising and
promotional activities, including direct mail solicitation and television,
radio, newspaper, magazine and other media advertisements. Reimbursements for
these services will be made in monthly payments by the Fund which will in no
event exceed an amount equal to a payment at the annual rate of 0.15 of 1% of
the Fund's average daily net assets. For the fiscal year ended December 31,
1997, the fee accrued was equal to payment at an annual rate of 0.10% of the
Fund's average daily net assets. Expenses incurred pursuant to the Plan in any
fiscal year will not be reimbursed by the Fund through payments accrued in any
subsequent fiscal year.
    
 
DETERMINATION OF NET ASSET VALUE
 
    The net asset value per share of the Fund is determined as of 4:00 p.m. New
York time on each day that the New York Stock Exchange is open (or, on days when
the New York Stock Exchange closes prior to 4:00 p.m., at such earlier time) by
taking the value of all assets of the Fund, subtracting its liabilities and
dividing by the number of shares outstanding. The net asset value per share will
not be determined on Good Friday and on such other federal and non-federal
holidays as are observed by the New York Stock Exchange.
 
    The Fund utilizes the amortized cost method in valuing its portfolio
securities, which method involves valuing a security at its cost adjusted by a
constant amortization to maturity of any discount or premium, regardless of the
impact of fluctuating interest rates on the market value of the instrument. The
purpose of this method of calculation is to facilitate the maintenance of a
constant net asset value per share of $1.00. However, there can be no assurance
that the $1.00 net asset value will be maintained.
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
    SYSTEMATIC WITHDRAWAL PLAN.  A systematic withdrawal plan is available for
shareholders who own or purchase shares of the Fund having a minimum value of at
least $5,000. The plan provides for monthly or quarterly (March, June,
September, December) checks in any dollar amount not less than $25, or in any
whole percentage of the account balance, on an annualized basis. The shares will
be redeemed at their net asset value determined, at the shareholder's option, on
the tenth or twenty-fifth day (or next business day) of the relevant month or
quarter and normally a check for the proceeds will be mailed by the Transfer
Agent, or amounts credited to a shareholder's DWR or other Selected Broker-
Dealer brokerage account, within five days after the date of redemption. A
shareholder wishing to make this election should do so on the Investment
Application. The withdrawal plan may be terminated at any time by the Fund.
 
    EASYINVEST-SM-.  Shareholders may subscribe to EasyInvest, an automatic
purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund. Shares purchased through EasyInvest will be added to the shareholder's
 
                                       12
<PAGE>
existing account at the net asset value calculated the same business day the
transfer of funds is effected.
 
   
    TARGETED DIVIDENDS.  In states where it is legally permissible, shareholders
may elect to have all shares of the Fund earned as a result of dividends paid in
any given month redeemed as of the end of the month and invested in shares of
any other designated open-end investment company for which InterCapital serves
as investment manager (collectively, with the Fund, the "Dean Witter Funds"),
other than Dean Witter New York Municipal Money Market Trust, at the net asset
value per share of the selected Dean Witter Fund determined as of the last
business day of the month, without the imposition of any applicable front-end
sales charge or without the imposition of any applicable contingent deferred
sales charge upon ultimate redemption. All such shares invested will begin to
earn dividends, if any, in the selected Dean Witter Fund on the first business
day of the succeeding month. Shareholders of the Fund must be shareholders of
the selected Class of the Dean Witter Fund targeted to receive investments from
dividends at the time they enter the Targeted Dividends program. Investors
should review the prospectus of the targeted Dean Witter Fund before entering
the program.
    
 
   
    EXCHANGE PRIVILEGE.  An "Exchange Privilege," that is, the privilege of
exchanging shares of certain Dean Witter Funds for shares of the Fund, exists
whereby shares of Dean Witter Funds that are multiple class funds ("Dean Witter
Multi-Class Funds"), shares of Dean Witter Multi-State Municipal Series Trust
and Dean Witter Hawaii Municipal Trust, which are Dean Witter Funds sold with a
front-end sales charge ("FSC Funds"), and shares of Dean Witter Global
Short-Term Income Fund Inc. ("Global Short-Term"), which is a Dean Witter Fund
offered with a contingent deferred sales charge ("CDSC"), may be exchanged for
shares of the Fund, Dean Witter U.S. Government Money Market Trust, Dean Witter
Tax-Free Daily Income Trust, Dean Witter California Tax-Free Daily Income Trust
and Dean Witter Liquid Asset Fund Inc. (which five funds are called "money
market funds"), and for shares of Dean Witter Short-Term U.S. Treasury Trust,
Dean Witter Limited Term Municipal Trust, Dean Witter Short-Term Bond Fund and
Dean Witter Intermediate Term U.S. Treasury Trust (the foregoing nine funds,
including the Fund, are referred to herein as the "Exchange Funds"). Shares of
the Exchange Funds received in an exchange for shares of a Dean Witter
Multi-Class Fund may be redeemed and exchanged only for shares of the
corresponding Class of a Dean Witter Multi-Class Fund or for shares of one of
the other Exchange Funds, provided that shares of the Exchange Funds received in
an exchange for Class A shares of a Dean Witter Multi-Class Fund may also be
redeemed and exchanged for shares of a FSC Fund, and shares of the Exchange
Funds received in an exchange for Class B shares of a Dean Witter Multi-Class
Fund may also be redeemed and exchanged for shares of Global Short-Term. In
addition, shares of the Exchange Funds received in an exchange for shares of a
FSC Fund may be redeemed and exchanged for Class A shares of a Dean Witter
Multi-Class Fund or for shares of one of the other Exchange Funds, and shares of
the Exchange Funds received in an exchange for shares of Global Short-Term may
be redeemed and exchanged for Class B shares of a Dean Witter Multi-Class Fund
or for shares of one of the other Exchange Funds.
    
 
   
    When exchanging into a money market fund, shares of the Multi-Class Fund,
the FSC Fund, Global Short-Term or the Exchange Fund are redeemed at their next
calculated net asset value and exchanged for shares of the money market fund at
their net asset value determined the following business day. An exchange to an
Exchange Fund that is not a money market fund is on the basis of the next
calculated net asset value per share of each fund after the exchange order is
received. Ultimately, any applicable CDSC will have to be paid upon redemption
of shares originally purchased from Global Short-Term or a Class of a Dean
Witter Multi-Class Fund that imposes a CDSC. (If shares of an Exchange Fund
received in exchange for shares
    
 
                                       13
<PAGE>
   
originally purchased from Global Short-Term or Class B of a Dean Witter
Multi-Class Fund are exchanged for shares of Global Short-Term or another Dean
Witter Multi-Class Fund having a different CDSC schedule from that of Global
Short-Term or the Dean Witter Multi-Class Fund from which the Exchange Fund
shares were acquired, the shares will be subject to the higher CDSC schedule.)
During the period of time the shares originally purchased from Global Short-Term
or from a Class of a Dean Witter Multi-Class Fund that imposes a CDSC remain in
the Exchange Fund (calculated from the last day of the month in which the
Exchange Fund shares were acquired), the holding period (for the purpose of
determining the rate of the CDSC) is frozen. If those shares are subsequently
reexchanged for shares of a Dean Witter Multi-Class Fund or Global Short-Term,
the holding period previously frozen when the first exchange was made resumes on
the last day of the month in which shares of a Dean Witter Multi-Class Fund or
shares of Global Short-Term are reacquired. Thus, the CDSC is based upon the
time (calculated as described above) the shareholder was invested in shares of a
Dean Witter Multi-Class Fund or in shares of Global Short-Term. In the case of
exchanges of Class A shares of a Dean Witter Multi-Class Fund that are subject
to a CDSC, the holding period also includes the time (calculated as described
above) the shareholder was invested in shares of a FSC Fund. In the case of
shares exchanged into an Exchange Fund on or after April 23, 1990, upon a
redemption of shares which results in a CDSC being imposed, a credit (not to
exceed the amount of the CDSC) will be given in an amount equal to the Exchange
Fund 12b-1 distribution fees, if any, incurred on or after that date which are
attributable to those shares (see "Purchase of Fund Shares--Plan of
Distribution" in the respective Exchange Fund Prospectus for a description of
Exchange Fund distribution fees). Exchanges may be made after the shares of the
fund acquired by purchase (not by exchange or dividend reinvestment) have been
held for thirty days. There is no waiting period for exchanges of shares
acquired by exchange or dividend reinvestment.
    
 
    Exchange Privilege accounts may also be maintained for shareholders of the
money market funds who acquired their shares in exchange for shares of various
TCW/DW Funds, a group of funds distributed by the Distributor for which TCW
Funds Management, Inc. serves as Adviser, under the terms and conditions
described in the Prospectus and Statement of Additional Information of each
TCW/DW Fund.
 
   
    ADDITIONAL INFORMATION REGARDING EXCHANGES. Purchases and exchanges should
be made for investment purposes only. A pattern of frequent exchanges may be
deemed by the Investment Manager to be abusive and contrary to the best
interests of the Fund's other shareholders and, at the Investment Manager's
discretion, may be limited by the Fund's refusal to accept additional purchases
and/ or exchanges from the investor. Although the Fund does not have any
specific definition of what constitutes a pattern of frequent exchanges, and
will consider all relevant factors in determining whether a particular situation
is abusive and contrary to the best interests of the Fund and its other
shareholders, investors should be aware that the Fund and each of the other Dean
Witter Funds may in their discretion limit or otherwise restrict the number of
times this Exchange Privilege may be exercised by any investor. Any such
restriction will be made by the Fund on a prospective basis only, upon notice to
the shareholder not later than ten days following such shareholder's most recent
exchange.
    
 
   
    The Exchange Privilege may be terminated or revised at any time by the Fund
and/or any of such Dean Witter Funds for which shares of the Fund have been
exchanged, upon such notice as may be required by applicable regulatory agencies
(presently sixty days' prior written notice for termination or material
revision), provided that six months prior written notice of termination will be
given to the shareholders who hold shares of the Exchange Funds or TCW/DW North
American Government Income Trust pursuant to the Exchange Privilege, and
provided further that the Exchange Privilege may be terminated or materially
revised without
    
 
                                       14
<PAGE>
   
notice under certain unusual circumstances. Shareholders maintaining margin
accounts with DWR or other Selected Broker-Dealers are referred to their account
executive regarding restrictions on exchange of shares of the Fund pledged in
their margin account.
    
 
   
    The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain one and read it carefully before
investing. Exchanges are subject to the minimum investment requirement of each
Class of shares and any other conditions imposed by each fund. In the case of
any shareholder holding a share certificate or certificates, no exchanges may be
made until all applicable share certificates have been received by the Transfer
Agent and deposited in the shareholder's account. An exchange will be treated
for federal income tax purposes the same as a repurchase or redemption of shares
on which the shareholder has realized a capital gain or loss. However, the
ability to deduct capital losses on an exchange may be limited in situations
where there is an exchange of shares within ninety days after the shares are
purchased. The Exchange Privilege is only available in states where an exchange
may legally be made.
    
 
    If DWR or another Selected Broker-Dealer is the current dealer of record and
its account numbers are part of the account information, shareholders may
initiate an exchange of shares of the Fund for shares of any of the above Dean
Witter Funds pursuant to this Exchange Privilege by contacting their DWR or
other Selected Broker-Dealer account executive (no Exchange Privilege
Authorization Form is required). Other shareholders (and those shareholders who
are clients of DWR or another Selected Broker-Dealer but who wish to make
exchanges directly by writing or telephoning the Transfer Agent) must complete
and forward to the Transfer Agent an Exchange Privilege Authorization Form,
copies of which may be obtained from the Transfer Agent, to initiate an
exchange. If the Authorization Form is used, exchanges may be made in writing or
by contacting the Transfer Agent at (800) 869-NEWS (toll-free). The Fund will
employ reasonable procedures to confirm that exchange instructions communicated
over the telephone are genuine. Such procedures may include requiring various
forms of personal identification such as name, mailing address, social security
or other tax identification number and DWR or other Selected Broker-Dealer
account number (if any). Telephone instructions may also be recorded. If such
procedures are not employed, the Fund may be liable for any losses due to
unauthorized or fraudulent instructions. Telephone exchange instructions will be
accepted if received by the Transfer Agent between 9:00 a.m. and 4:00 p.m. New
York time, on any day the New York Stock Exchange is open. Any shareholder
wishing to make an exchange who has previously filed an Exchange Privilege
Authorization Form and who is unable to reach the Fund by telephone should
contact his or her DWR or other Selected Broker-Dealer account executive, if
appropriate, or make a written exchange request. Shareholders are advised that
during periods of drastic economic or market changes, it is possible that the
telephone exchange procedures may be difficult to implement, although this has
not been the experience of the Dean Witter Funds in the past.
 
    For further information regarding the Exchange Privilege shareholders should
contact their DWR or other Selected Broker-Dealer account executive or the
Transfer Agent.
 
REDEMPTION AND REPURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
    A shareholder may withdraw all or any of his or her investments at any time,
without penalty or charge, by redeeming shares through the Transfer Agent at the
net asset value per share next determined (see "Purchase of Fund
Shares--Determination of Net Asset Value") after the receipt of a
 
                                       15
<PAGE>
redemption request meeting the applicable requirements as follows (all of which
are subject to the General Redemption Requirements set forth below):
 
1. BY CHECK
 
    The Transfer Agent will supply blank checks to any shareholder who has
requested them on an Investment Application. The shareholder may make checks
payable to the order of anyone in any amount not less than $500 (checks written
in amounts under $500 will not be honored by the Transfer Agent). Shareholders
must sign checks exactly as their shares are registered. If the account is a
joint account, the check may contain one signature unless the joint owners have
specified on an Investment Application that all owners are required to sign
checks. Only shareholders having accounts in which no share certificates have
been issued will be permitted to redeem shares by check.
 
    Shares will be redeemed at their net asset value next determined (see
"Purchase of Fund Shares-- Determination of Net Asset Value") after receipt by
the Transfer Agent of a check which does not exceed the value of the account.
Payment of the proceeds of a check will normally be made on the next business
day after receipt by the Transfer Agent of the check in proper form. Shares
purchased by check (including a certified or bank cashier's check) are not
normally available to cover redemption checks until fifteen days after receipt
of the check used for investment by the Transfer Agent. The Transfer Agent will
not honor a check in an amount exceeding the value of the account at the time
the check is presented for payment.
 
2. BY TELEPHONE OR WIRE INSTRUCTIONS WITH PAYMENT TO PREDESIGNATED BANK ACCOUNT
 
    A shareholder may redeem shares by telephoning or sending wire instructions
to the Transfer Agent. Payment will be made by the Transfer Agent to the
shareholder's bank account at any commercial bank designated by the shareholder
in an Investment Application, by wire if the amount is $1,000 or more and the
shareholder so requests, and otherwise by mail. Normally, the Transfer Agent
will transmit payment the next business day following receipt of a request for
redemption in proper form. Only shareholders having accounts in which no share
certificates have been issued will be permitted to redeem shares by telephone or
wire instructions.
 
    DWR and other participating Selected Broker-Dealers have informed the
Distributor and the Fund that, on behalf of and as agent for their customers who
are shareholders of the Fund, they will transmit to the Fund requests for
redemption of shares owned by their customers. In such cases, the Transfer Agent
will wire proceeds of redemptions to DWR's or another Selected Broker-Dealer's
bank account for credit to the shareholders' accounts the following business
day. DWR and other participating Selected Broker-Dealers have also informed the
Distributor and the Fund that they do not charge for this service.
 
    Redemption instructions must include the shareholder's name and account
number and be wired or called to the Transfer Agent:
    --800-869-NEWS (toll-free)
    --Telex No. 125076
 
3. BY MAIL
 
   
    A shareholder may redeem shares by sending a letter to Dean Witter Trust
FSB, P.O. Box 983, Jersey City, NJ 07303, requesting redemption and surrendering
share certificates if any have been issued.
    
 
    Redemption proceeds will be mailed to the shareholder at his or her
registered address or mailed or wired to his or her predesignated bank account,
as he or she may request. Proceeds of redemption may also be sent to some other
person, as requested by the shareholder.
 
GENERAL REDEMPTION REQUIREMENTS
 
   
    Written requests for redemption must be signed by the registered
shareholder(s). If the proceeds are to be paid to anyone other than the
registered shareholder(s) or sent to any address other
    
 
                                       16
<PAGE>
   
than the shareholder's registered address or predesignated bank account,
signatures must be guaranteed by an eligible guarantor acceptable to the
Transfer Agent (shareholders should contact the Transfer Agent for a
determination as to whether a particular institution is an eligible guarantor),
except in the case of redemption by check. Additional documentation may be
required where shares are held by a corporation, partnership, trustee or
executor. With regard to shares of the Fund acquired pursuant to the Exchange
Privilege, any applicable CDSC will be imposed upon the redemption of such
shares (see "Purchase of Fund Shares--Exchange Privilege").
    
 
   
    If shares to be redeemed are represented by a share certificate, the request
for redemption must be accompanied by the share certificate and a share
assignment form signed by the registered shareholder(s) exactly as the account
is registered. Shareholders are advised, for their own protection, to send the
share certificate and assignment form in separate envelopes (if they are being
mailed and not hand delivered) to the Transfer Agent. Signatures must be
guaranteed by an eligible guarantor acceptable to the Transfer Agent (see
above). Additional documentation may be required where shares are held by a
corporation, partnership, trustee or executor.
    
 
   
    All requests for redemption, all share certificates and all share
assignments should be sent to Dean Witter Trust FSB, P.O. Box 983, Jersey City,
NJ 07303.
    
 
    Generally, the Fund will attempt to make payment for all redemptions and
repurchases within one business day, but in no event later than seven days after
receipt of such redemption request in proper form. However, if the shares being
redeemed or repurchased were purchased by check (including a certified or bank
cashier's check), payment may be delayed for the minimum time needed to verify
that the check used for investment has been honored (not more than fifteen days
from the time of receipt of the check by the Transfer Agent). In addition, the
Fund may postpone redemptions or repurchases at certain times when normal
trading is not taking place on the New York Stock Exchange.
 
   
    The Fund reserves the right, on sixty days' notice, to redeem at their net
asset value the shares of any shareholder (other than shares held in an
Individual Retirement Account or custodial account under Section 403(b)(7) of
the Internal Revenue Code) whose shares due to redemptions by the shareholder
have a value of less than $1,000, or such lesser amount as may be fixed by the
Board of Trustees.
    
 
AUTOMATIC REDEMPTION PROCEDURE
 
    The Distributor has instituted an automatic redemption procedure which it
may utilize to satisfy amounts due it by a shareholder maintaining a brokerage
account with DWR or another Selected Broker-Dealer, as a result of purchases of
securities or other transactions in the shareholder's brokerage account. Under
this procedure, if the shareholder elects to participate by so notifying DWR or
another Selected Broker-Dealer, the shareholder's DWR or other Selected
Broker-Dealer brokerage account will be scanned each business day prior to the
close of business (4:00 P.M., New York time). After application of any cash
balances in the account, a sufficient number of Fund shares may be redeemed at
the close of business to satisfy any amounts for which the shareholder is
obligated to make payment to DWR or other Selected Broker-Dealer. Redemptions
will be effected on the business day preceding the date the shareholder is
obligated to make such payment, and DWR or other Selected Broker-Dealer will
receive the redemption proceeds on the day following the redemption date.
Shareholders will receive all dividends declared and reinvested through the date
of redemption.
 
   
EASYINVEST-SM---AUTOMATIC REDEMPTION
    
 
   
    Shareholders may invest in shares of certain other Dean Witter Funds by
subscribing to EasyInvest, an automatic purchase plan which provides for the
automatic investment of any amount from $100 to $5,000 in shares of the
specified fund.
    
 
                                       17
<PAGE>
   
Under EasyInvest, a shareholder may direct that a sufficient number of shares of
the Fund be automatically redeemed and the proceeds transferred automatically to
the Dean Witter Funds' Transfer Agent on a semi-monthly, monthly or quarterly
basis, for investment in shares of the specified fund. Redemptions will be
effected on the business day preceding the investment date and the Transfer
Agent will receive the proceeds for investment on the day following the
redemption date.
    
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    DIVIDENDS AND DISTRIBUTIONS.  The Fund declares dividends, payable on each
day the New York Stock Exchange is open for business, of all of its daily net
investment income to shareholders of record as of the close of business the
preceding business day. Dividends from net short-term capital gains, if any,
will be paid periodically. The amount of dividend may fluctuate from day to day
and may be omitted on some days if net realized losses on portfolio securities
exceed the Fund's net investment income. Dividends are declared and
automatically reinvested daily in additional full and fractional shares of the
Fund (rounded to the last 1/100 of a share) at the net asset value per share at
the close of business on that day. Any dividends declared in the last quarter of
any calendar year which are paid in the following calendar year prior to
February 1 will be deemed received by the shareholder in the prior year.
 
    Shareholders may instruct the Transfer Agent (in writing) to have their
dividends paid out monthly in cash. For such shareholders, the shares reinvested
and credited to their account during the month will be redeemed as of the close
of business on the monthly payment date (which will be no later than the last
business day of the month) and the proceeds will be paid to them by check.
Processing of dividend checks begins immediately following the monthly payment
date. Shareholders who have requested to receive dividends in cash will normally
receive their monthly dividend check during the first ten days of the following
month.
 
    Share certificates for dividends or distributions will not be issued unless
a shareholder requests in writing that a certificate be issued for a specific
number of shares.
 
    TAXES.  Because the Fund intends to distribute substantially all of its net
investment income and net capital gains, if any, to shareholders, and intends to
otherwise comply with all the provisions of Subchapter M of the Internal Revenue
Code of 1986, as amended (the "Code"), to qualify as a regulated investment
company, it is not expected that the Fund will be required to pay any federal
income tax.
 
    The Fund intends to qualify to pay "exempt-interest dividends" to its
shareholders by maintaining, as of the close of each quarter of its taxable
year, at least 50% of the value of its total assets in tax-exempt securities. If
the Fund satisfies such requirement, dividends from net investment income to
shareholders, whether taken in cash or reinvested in additional Fund shares,
will be excludable from gross income for federal income tax purposes to the
extent net interest income is represented by interest on tax-exempt securities.
Exempt-interest dividends are included, however, in determining what portion, if
any, of a person's Social Security benefits are subject to federal income tax.
 
    The Code subjects interest received on certain otherwise tax-exempt
securities to an alternative minimum tax. This alternative minimum tax applies
to interest received on "private activity bonds" (in general, bonds that benefit
non-government entities) issued after August 7, 1986 which, although tax-exempt,
are used for purposes other than those generally performed by governmental units
(e.g., bonds used for commercial or housing purposes). Income received on such
bonds is classified as a "tax preference item" under the alternative minimum
tax, for both individual and corporate investors.
 
                                       18
<PAGE>
 
<TABLE>
<S>                                                                                                 <C><C><C><C>
                                                                                                    5 5 0 --
                                                                                                    for office
                                                                                                    use only
</TABLE>
 
                                                                            Dean
Witter
                                                                             New
York
Municipal
                                                                           Money
Market
 
                                                                          [LOGO]
APPLICATION
Trust
Dean Witter New York Municipal Money Market Trust
   
Send to: Dean Witter Trust FSB (the "Transfer Agent"), P.O. Box 1040, Jersey
City, NJ 07303
    
 
   
<TABLE>
<S>                   <C>  <C><C><C><C><C><C><C><C><C><C><C><C>
INSTRUCTIONS          For assistance in completing this application, telephone Dean Witter Trust FSB at (800) 869-NEWS (Toll-Free).
TO REGISTER
</TABLE>
    
 
[REMOVE APPLICATION CAREFULLY]
<TABLE>
<S>                   <C>  <C><C><C><C><C><C><C><C><C><C><C><C>
SHARES                1.
(please print)
                               First          Last
                               Name           Name
- -As joint tenants,
  use line 1 & 2      2.
                               First          Last
                               Name           Name
                          (Joint tenants with
                          rights of survivorship
                          unless otherwise
                          specified)
</TABLE>
<TABLE>
<S>                   <C>  <C><C><C><C><C><C><C><C><C><C><C><C>
                                                   Social
                                                   Security
                                                   Number
- -As custodian
  for a minor,        3.
  use lines 1 & 3
                                          Minor's
                                          Name
                          Under the  Uniform      Minor's
                          Gifts to Minors Act     Social
                                                  Security
                                                  Number
                          State of Residence of
                          Minor
- -In the name of a
  corporation,        4.
  trust,
  partnership
  or other                           Name of Corporation,
                                       Trust (including
                                     trustee name(s)) or
                                      Other Organization
  institutional
  investors, use
  line 4
                          If Trust, Date of          Tax
                          Trust Instrument:       Identification
                                                  Number
ADDRESS
                                              City                                        State
                          Code
</TABLE>
 
<TABLE>
<S>                   <C>                                                 <C>
TO PURCHASE
SHARES:
Minimum Initial       / / CHECK (enclosed) $ (Make Payable to Dean
Investment:           Witter New York Municipal Money Market Trust)
$5,000                / / WIRE*  On           MF*
                              (Date)                            (Control
                      number, this transaction)
</TABLE>
 
   
<TABLE>
<S>         <C>                                                 <C>
            Name of Bank                                Branch
            Address
            Telephone Number
            * For an initial investment made by wiring funds,
            obtain a control number by calling: (800) 869-NEWS
            (Toll-Free) or (201) 413-7067.
             Your bank should wire to:
            Bank of New York for credit to account of Dean
            Witter Trust FSB
</TABLE>
    
 
<TABLE>
<S>         <C>                                                 <C>
            Account Number: 8900188413
            Re: Dean Witter New York Municipal Money Market
            Trust
            Account Of:
                         (Investor's Account as Registered at
             the Transfer Agent)
            Control or Account Number:
                                          (Assigned by
             Telephone)
                                                OPTIONAL SERVICES
</TABLE>
 
<TABLE>
<S>       <C> <C><C><C>  <C>
            NOTE: If you are a current shareholder of Dean Witter New York Municipal Market Trust, please indicate
            your fund account number here.
            [5] [5] [0] -
</TABLE>
 
<TABLE>
<S>         <C>
DIVIDENDS   All dividends will be reinvested daily in additional shares, unless the following option is
            selected:
            / / Pay income dividends by check at the end of each month.
WRITE YOUR  / / Send an initial supply of checks.
OWN         FOR JOINT ACCOUNTS:
CHECK       / / Check this box if all owners are required to sign checks.
SYSTEMATIC  / / Systematic Withdrawal Plan  / / Percentage of balance (annualized basis)
WITHDRAWAL  ($25 minimum)                   % / / Monthly or / / Quarterly
PLAN        $ / / Monthly or / / Quarterly  / / 10th    or / / 25th of Month/Quarter
Minimum     / / 10th    or / / 25th of
Account     Month/Quarter
Value:      / / Pay shareholder(s) at
$5,000      address of record.
            / / Pay to the following: (If this payment option is selected a signature guarantee is required)
</TABLE>
 
<TABLE>
<S>         <C>                                                 <C>
            Name
            Address
            City                                                   State                                                   Zip
            Code
</TABLE>
 
<PAGE>
   
<TABLE>
<S>                         <C>
                            / /  Dean Witter Trust FSB is hereby authorized to honor telephonic or other instructions,
PAYMENT TO                  without  signature guarantee, from any  person for the redemption of  any or all shares of
PREDESIGNATED                    Dean Witter New York Municipal Money Market  Trust held in my (our) account  provided
BANK ACCOUNT                     that  proceeds are transmitted  only to the  following bank account.  (Absent its own
                                 negligence, neither Dean Witter New York Municipal Money Market Trust nor Dean Witter
                                 Trust FSB  (the  "Transfer Agent")  shall  be liable  for  any redemption  caused  by
                                 unauthorized instruction(s)):
Bank Account must be in
same  name  as  shares  are
registered
                            NAME & BANK ACCOUNT NUMBER
Minimum Amount:
$1,000                      NAME OF BANK
                            ADDRESS OF BANK
                            ()
                            TELEPHONE NUMBER OF BANK
                                                             SIGNATURE AUTHORIZATION
FOR ALL ACCOUNTS            NOTE: RETAIN A COPY OF THIS DOCUMENT FOR YOUR RECORDS. ANY MODIFICATION OF THE INFORMATION
                            BELOW  WILL REQUIRE AN AMENDMENT TO  THIS FORM. THIS DOCUMENT IS  IN FULL FORCE AND EFFECT
                            UNTIL ANOTHER DULY EXECUTED FORM IS RECEIVED BY THE TRANSFER AGENT.
                            The "Transfer Agent"  is hereby authorized  to act as  agent for the  registered owner  of
                            shares  of Dean  Witter New York  Municipal Money  Market Trust (the  "Fund") in effecting
                            redemptions of shares and is authorized to recognize the signature(s) below in payment  of
                            funds  resulting from such redemptions on behalf  of the registered owners of such shares.
                            The Transfer Agent  shall be liable  only for its  own negligence and  not for default  or
                            negligence  of its correspondents, or for losses in  transit. The Fund shall not be liable
                            for any default or negligence of the Transfer Agent.
                            I (we) certify to my (our) legal capacity, or the capacity of the investor named above, to
                            invest in and redeem shares of, and I (we) acknowledge receipt of a current prospectus of,
                            Dean Witter  New York  Municipal Money  Market Trust  and (we)  further certify  my  (our)
                            authority to sign and act for and on behalf of the investor.
                            Under penalties of perjury, I certify (1) that the number shown on this form is my correct
                            taxpayer  identification number and (2) that I am not subject to backup withholding either
                            because I have not been notified that I am subject to backup withholding as a result of  a
                            failure  to report all interest or dividends, or the Internal Revenue Service has notified
                            me that I am no longer subject to  backup withholding. (Note: You must cross out item  (2)
                            above  if  you  have  been notified  by  IRS  that  you are  currently  subject  to backup
                            withholding because of underreporting interest or dividends on your tax return.)
                            For Individual, Joint and Custodial Accounts for Minors, Check Applicable Box:
                            / / I am a United States Citizen.                     / / I am not a United States
                            Citizen.
                                                  SIGNATURE(S) (IF JOINT TENANTS, ALL MUST SIGN)
 
<CAPTION>
 
PAYMENT TO
PREDESIGNATED
BANK ACCOUNT
 
Bank Account must be in
same  name  as  shares  ar
registered
                              BANK'S ROUTING TRANSMIT
                                       CODE
                                  (ASK YOUR BANK)
Minimum Amount:
$1,000
 
FOR ALL ACCOUNTS
 
</TABLE>
    
 
<TABLE>
<S>                   <C>                                                <C>
Name(s) must be
signed exactly the
same as shown on
lines 1 to 4 on the
reverse side of this
application
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA           SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA           SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                      SIGNED THIS  DAY OF , 19.
                                         FOR CORPORATIONS, TRUSTS, PARTNERSHIPS AND OTHER ORGANIZATIONS
                      The following  named  persons  are  currently  officers/trustees/general  partners/other  authorized
                      signatories  of the Registered  Owner, and any  * of them  ("Authorized Person(s)") is/are currently
                      authorized under  the applicable  governing document  to  act with  full power  to sell,  assign  or
                      transfer  securities  of the  the Fund  for  the Registered  Owner and  to  execute and  deliver any
                      instrument necessary to effectuate the authority hereby conferred:
                                         NAME/TITLE                                          SIGNATURE
In addition,
complete
Section A or B
below.
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA           SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA           SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA           SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                      SIGNED THIS  DAY OF , 19.
                      The Transfer Agent may, without inquiry, act  only upon the instruction of ANY PERSON(S)  purporting
                      to  be (an) Authorized  Person(s) as named in  the Certification Form last  received by the Transfer
                      Agent. The Transfer Agent and the Fund shall not be liable for any claims, expenses (including legal
                      fees) or losses  resulting from  the Transfer  Agent having  acted upon  any instruction  reasonably
                      believed genuine.
                      *INSERT  A NUMBER. UNLESS OTHERWISE INDICATED, THE TRANSFER  AGENT MAY HONOR INSTRUCTIONS OF ANY ONE
                      OF THE PERSONS NAMED ABOVE.
</TABLE>
 
<TABLE>
<S>                   <C>
SECTION (A)           NOTE: EITHER A SIGNATURE GUARANTEE OR CORPORATE SEAL IS REQUIRED.
CORPORATIONS AND IN-
CORPORATED
ASSOCIATIONS ONLY.    I, , Secretary of the Registered Owner, do hereby  certify that at a meeting on at which a  quorum
SIGN ABOVE AND COM-   was  present throughout, the Board of Directors of the corporation/the officers of the association
PLETE THIS            duly adopted a resolution, which is in full force and effect and in accordance with the Registered
SECTION               Owner's charter and  by-laws, which resolution  did the following:  (1) empowered the  above-named
                      Authorized  Person(s) to  effect securities  transactions for  the Registered  Owner on  the terms
                      described above; (2) authorized the Secretary to certify, from time to time, the names and  titles
                      of  the officers of the Registered  Owner and to notify the  Transfer Agent when changes in office
                      occur; and (3) authorized the  Secretary to certify that such  a resolution has been duly  adopted
                      and  will  remain in  full force  and effect  until the  Transfer Agent  receives a  duly executed
                      amendment to the Certification Form.
SIGNATURE
GUARANTEE**           Witness my hand on behalf of the corporation/association this day of , 19.
(or Corporate Seal)
                                                                 Secretary**
                      The undersigned officer (other than the Secretary) hereby certifies that the foregoing  instrument
                      has been signed by the Secretary of the
                      corporation/association.
SIGNATURE
GUARANTEE**
(or Corporate Seal)                  Certifying Officer of the Corporation or Incorporated Association**
SECTION (B) ALL                                    NOTE: A SIGNATURE GUARANTEE IS REQUIRED.
OTHER
INSTITUTIONAL
INVESTORS                                                         Certifying
SIGNATURE                                          Trustee(s)/General Partner(s)/Other(s)**
GUARANTEE**
SIGN ABOVE AND COM-                                               Certifying
PLETE THIS SECTION                                 Trustee(s)/General Partner(s)/Other(s)**
                      **SIGNATURE(S) MUST BE GUARANTEED BY AN ELIBIGLE GUARANTOR
</TABLE>
<TABLE>
<S>                             <C>                                                           <C>
DEALER                          Above signature(s) guaranteed. Prospectus has been delivered
                                by undersigned to above-named applicant(s).
(if any)
Completion by dealer only
                                Firm Name
                                Address
                                City, State, Zip Code
 
<CAPTION>
DEALER
(if any)
Completion by dealer only
                                Office Number-Account Number at Dealer-A/E Number
                                Account Executive's Last Name
                                Branch Office
</TABLE>
 
- -Registered Trademark- 1998 Dean Witter Distributors Inc.
<PAGE>
The Fund may invest without limit in such "private activity bonds," with the
result that a substantial portion of the exempt-interest dividends paid by the
Fund may be an item of tax preference to shareholders subject to the alternative
minimum tax. In addition, certain corporations which are subject to the
alternative minimum tax may have to include a portion of exempt-interest
dividends in calculating their alternative minimum taxable income in situations
where the adjusted current earnings of the corporation exceeds its alternative
minimum taxable income.
 
   
    After the end of its calendar year, the shareholders will be sent a
statement indicating the percentage of the dividend distributions for such
taxable year which constitutes exempt-interest dividends and the percentage, if
any, that is taxable, and the percentage, if any, of the exempt-interest
dividends which constitutes an item of tax preference. (Unlike federal law, no
portion of the exempt-interest dividends will constitute an item of tax
preference for New York personal income tax purposes.) This percentage should be
applied uniformly to any distributions made during the taxable year to determine
the proportion of dividends that is tax-exempt. The percentage may differ from
the percentage of tax-exempt dividend distributions for any particular month.
Shareholders will also be notified of their proportionate share of long-term
capital gains distributions that are eligible for a reduced rate of tax under
the Taxpayer Relief Act of 1997.
    
 
    To the extent that dividends are derived from interest on New York
tax-exempt securities, such dividends will also be exempt from New York State
and New York City personal income taxes. Shareholders will normally be subject
to federal and New York State and New York City personal income tax on dividends
paid from interest income derived from taxable securities and on distributions
of net capital gains. For federal and New York State or New York City income tax
purposes, distributions of net long-term capital gains, if any, are taxable to
shareholders as long-term capital gains, regardless of how long the shareholder
has held the Fund shares and regardless of whether the distribution is received
in additional shares or in cash. To avoid being subject to a 31% backup
withholding tax on taxable dividends and capital gains distributions and the
proceeds of redemptions and repurchases, shareholders' taxpayer identification
numbers must be furnished and certified as to accuracy.
 
    Interest on indebtedness incurred by shareholders or related parties to
purchase or carry shares of an investment company paying exempt-interest
dividends, such as the Fund, will not be deductible by the investor for federal
or New York State or New York City personal income tax purposes.
 
    The foregoing relates to federal income taxation and to New York State and
New York City personal income taxation as in effect as of the date of this
Prospectus.
 
    Shareholders should consult their tax advisers as to the applicability of
the above to their own tax situation.
 
CURRENT AND EFFECTIVE YIELD
 
   
    From time to time the Fund advertises its "yield" and "effective yield."
Both yield figures are based on historical earnings and are not intended to
indicate future performance. The "yield" of the Fund refers to the income
generated by an investment in the Fund over a given seven-day period (which
period will be stated in the advertisement). This income is then "annualized."
That is, the amount of income generated by the investment during that seven-day
period is assumed to be generated each seven-day period within a 365-day period
and is shown as a percentage of the investment. The "effective yield" for a
seven-day period is calculated similarly, but, when annualized, the income
earned by an investment in the Fund is assumed to be reinvested each week within
a 365-day period. The "effective yield" will be slightly higher than the "yield"
because of the compounding effect of this assumed reinvestment. The Fund's yield
for the seven days ended December 31, 1997 was 3.14%. The effective annual yield
on 3.14% is 3.19%,
    
 
                                       19
<PAGE>
   
assuming daily compounding. The Fund may also quote tax-equivalent yield which
is calculated by determining the pre-tax yield which, after being taxed at a
stated rate, would be equivalent to the yield determined as described above. The
Fund may also advertise the growth of hypothetical investments of $10,000,
$50,000 and $100,000 in shares of the Fund.
    
 
ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
 
    VOTING RIGHTS.  All shares of beneficial interest of the Fund are of $0.01
par value and are equal as to earnings, assets and voting privileges.
 
   
    The Fund is not required to hold Annual Meetings of Shareholders and, in
ordinary circumstances, the Fund does not intend to hold such meetings. The
Trustees may call Special Meetings of Shareholders for action by shareholder
vote as may be required by the Act or the Declaration of Trust. Under certain
circumstances, the Trustees may be removed by action of the Trustees or by the
Shareholders.
    
 
    Under Massachusetts law, shareholders of a business trust may, under certain
circumstances, be held personally liable as partners for obligations of the
Fund. However, the Declaration of Trust contains an express disclaimer of
shareholder liability for acts or obligations of the Fund, requires that notice
of such disclaimer be given in each instrument entered into or executed by the
Fund and provides for indemnification and reimbursement of expenses out of the
Fund's property for any shareholder held personally liable for the obligations
of the Fund. Thus, the risk of a shareholder incurring financial loss on account
of shareholder liability is limited to circumstances in which the Fund itself
would be unable to meet its obligations. Given the above limitations on
shareholder personal liability and the nature of the Fund's assets and
operations, the possibility of the Fund being unable to meet its obligations is
remote and, in the opinion of Massachusetts counsel to the Fund, the risk to
Fund shareholders of personal liability is remote.
 
    CODE OF ETHICS.  Directors, officers and employees of InterCapital, Dean
Witter Services Company Inc. and the Distributor are subject to a
 
strict Code of Ethics adopted by those companies. The Code of Ethics is intended
to ensure that the interests of shareholders and other clients are placed ahead
of any personal interest, that no undue personal benefit is obtained from a
person's employment activities and that actual and potential conflicts of
interest are avoided. To achieve these goals and comply with regulatory
requirements, the Code of Ethics requires, among other things, that personal
securities transactions by employees of the companies be subject to an advance
clearance process to monitor that no Dean Witter Fund is engaged at the same
time in a purchase or sale of the same security. The Code of Ethics bans the
purchase of securities in an initial public offering and prohibits engaging in
futures and options transactions and profiting on short-term trading (that is, a
purchase within sixty days of a sale or a sale within sixty days of a purchase)
of a security. In addition, investment personnel may not purchase or sell a
security for their personal account within thirty days before or after any
transaction in any Dean Witter Fund managed by them. Any violations of the Code
of Ethics are subject to sanctions, including reprimand, demotion or suspension
or termination of employment. The Code of Ethics comports with regulatory
requirements and the recommendations in the 1994 report by the Investment
Company Institute Advisory Group on Personal Investing.
 
   
    MASTER/FEEDER CONVERSION.  The Fund reserves the right to seek to achieve
its investment objective by investing all of its investable assets in a
non-diversified, open-end management investment company having the same
investment objective and policies and substantially the same investment
restrictions as those applicable to the Fund.
    
 
                                       20
<PAGE>
   
    YEAR 2000.  The investment management services provided to the Fund by the
Investment Manager and the services provided to shareholders by the Distributor
and the Transfer Agent depend on the smooth functioning of their computer
systems. Many computer software systems in use today cannot recognize the year
2000, but revert to 1900 or some other date, due to the manner in which dates
were encoded and calculated. That failure could have a negative impact on the
handling of securities trades, pricing and account services. The Investment
Manager, the Distributor and the Transfer Agent have been actively working on
necessary changes to their own computer systems to prepare for the year 2000 and
expect that their systems will be adapted before that date, but there can be no
assurance that they will be successful, or that interaction with other
non-complying computer systems will not impair their services at that time.
    
 
   
    SHAREHOLDER INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund or the Transfer Agent at one of the telephone numbers or at the
address set forth on the front cover of this Prospectus.
    
 
                                       21
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1997
 
   
<TABLE>
<CAPTION>
PRINCIPAL
AMOUNT IN                                                                                  COUPON  DEMAND
THOUSANDS                                                                                  RATE+   DATE*       VALUE
- -----------------------------------------------------------------------------------------------------------------------
<C>        <S>                                                                             <C>    <C>       <C>
           NEW YORK TAX-EXEMPT SHORT-TERM VARIABLE RATE MUNICIPAL OBLIGATIONS (61.1%)
$    400   Babylon Industrial Development Agency, OFS Equity of Babylon
             Ser 1989 (AMT)..............................................................  5.00%  01/02/98  $   400,000
   1,600   New York City Cultural Resources Trust, Solomon R. Guggenheim
             Foundation Ser 1990 B.......................................................  4.75   01/02/98    1,600,000
   1,000   New York City Housing Development Corporation, Multi-family 1994 Ser A........  3.60   01/08/98    1,000,000
           New York City Industrial Development Agency,
   1,600     Brooklyn Navy Yard Cogen Ser 1995 A (AMT)...................................  4.25   01/08/98    1,600,000
   1,000     Korean Airlines Co Ser 1997 A (AMT).........................................  3.60   01/08/98    1,000,000
     600     National Audubon Society Inc Ser 1989.......................................  4.75   01/02/98      600,000
     900     The Berkeley Carroll School Ser 1993........................................  3.60   01/08/98      900,000
     800     The Calhoun School Inc Ser 1990.............................................  4.00   01/08/98      800,000
     950     The Columbia Grammar & Preparatory School Ser 1994..........................  3.60   01/08/98      950,000
   2,200   New York Local Government Assistance Corporation, Ser 1994 B..................  3.50   01/08/98    2,200,000
           New York State Dormitory Authority,
     600     Cornell University Ser 1990 B...............................................  4.75   01/02/98      600,000
   1,000     Metropolitan Museum of Art Ser A............................................  3.50   01/08/98    1,000,000
   2,000     Oxford University Press Inc Ser 1993........................................  5.10   01/02/98    2,000,000
           New York State Energy Research & Development Authority,
   1,000     Brooklyn Union Gas Co Ser A-2...............................................  3.60   01/08/98    1,000,000
   1,000     Central Hudson Gas & Electric Corp Ser 1987 A (AMT).........................  4.10   01/08/98    1,000,000
   1,000     Long Island Lighting Co Ser 1985 A..........................................  3.60   03/02/98    1,000,000
   1,000     Long Island Lighting Co 1993 Ser B (AMT)....................................  3.85   01/08/98    1,000,000
   1,000     New York State Electric & Gas Corp Ser 1985 B...............................  3.80   10/15/98    1,000,000
   1,000   New York State Housing Finance Agency, East 84th Street Ser A.................  3.60   01/08/98    1,000,000
           New York State Medical Care Facilities Finance Agency,
     900     Lenox Hill Hospital 1990 Ser A..............................................  3.60   01/08/98      900,000
     600     The Children's Hospital of Buffalo 1991 Ser A...............................  3.70   01/08/98      600,000
   1,100   Port Authority of New York & New Jersey, Ser 3................................  4.90   01/02/98    1,100,000
   2,000   St Lawrence County Industrial Development Agency, Reynolds Metals Co Ser 1995
             (AMT).......................................................................  3.75   01/08/98    2,000,000
   1,900   Suffolk County Water Authority, Ser 1997 BANs.................................  3.60   01/08/98    1,900,000
   2,000   Triborough Bridge and Tunnel Authority, Ser 1994 (FGIC).......................  3.55   01/08/98    2,000,000
   1,000   Yonkers Industrial Development Agency, Sarah Lawrence
             College Ser 1997 (MBIA).....................................................  3.50   01/08/98    1,000,000
                                                                                                            -----------
 
           TOTAL NEW YORK TAX-EXEMPT SHORT-TERM VARIABLE RATE MUNICIPAL OBLIGATIONS
           (AMORTIZED COST $30,150,000)...................................................................   30,150,000
                                                                                                            -----------
</TABLE>
    
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       22
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1997, CONTINUED
 
   
<TABLE>
<CAPTION>
                                                                                                   YIELD TO
PRINCIPAL                                                                                          MATURITY
AMOUNT IN                                                                        COUPON MATURITY  ON DATE OF
THOUSANDS                                                                        RATE     DATE     PURCHASE      VALUE
- -------------------------------------------------------------------------------------------------------------------------
<C>        <S>                                                                   <C>    <C>       <C>         <C>
           NEW YORK TAX-EXEMPT COMMERCIAL PAPER (34.3%)
           Municipal Assistance Corporation for the City of New York,
$  1,000     Ser K Subser K-3..................................................  3.75%  01/22/98       3.75 % $ 1,000,000
   1,000     Ser K Subser K-3..................................................  3.60   02/18/98       3.60     1,000,000
           New York City,
   1,000     1994 Ser H Subser H-3 (FSA).......................................  3.75   02/19/98       3.75     1,000,000
   1,000     1996 Ser J Subser J-2.............................................  3.75   02/26/98       3.75     1,000,000
           New York City Municipal Water Finance Authority,
   1,000     Ser #3............................................................  3.70   01/27/98       3.70     1,000,000
   1,000     Ser #3............................................................  3.80   03/12/98       3.80     1,000,000
           New York State,
   1,000     Ser T BANs........................................................  3.75   01/20/98       3.75     1,000,000
   1,300     Ser T BANs........................................................  3.70   01/21/98       3.70     1,300,000
           New York State Dormitory Authority,
   1,000     Columbia University 1997 Issue....................................  3.65   02/12/98       3.65     1,000,000
     500     Sloan-Kettering Cancer Center Ser 1989 C..........................  3.55   02/11/98       3.55       500,000
   1,000     Sloan-Kettering Cancer Center Ser 1989 C..........................  3.55   03/05/98       3.55     1,000,000
           New York State Environmental Facilities Corporation,
     500     General Electric Co Ser 1987 A....................................  3.70   02/17/98       3.70       500,000
     500     General Electric Co Ser 1987 A....................................  3.50   03/09/98       3.50       500,000
   1,100     General Electric Co Ser 1987 A....................................  3.60   03/25/98       3.60     1,100,000
           New York State Power Authority,
   1,000     Ser 2.............................................................  3.70   02/24/98       3.70     1,000,000
   1,000     Ser 2.............................................................  3.65   03/11/98       3.65     1,000,000
           Puerto Rico Government Development Bank,
   1,000     Ser 1996..........................................................  3.65   02/05/98       3.65     1,000,000
   1,000     Ser 1996..........................................................  3.65   03/10/98       3.65     1,000,000
                                                                                                              -----------
 
           TOTAL NEW YORK TAX-EXEMPT COMMERCIAL PAPER
           (AMORTIZED COST $16,900,000 )....................................................................   16,900,000
                                                                                                              -----------
</TABLE>
    
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       23
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1997, CONTINUED
 
<TABLE>
<CAPTION>
                                                                                                   YIELD TO
PRINCIPAL                                                                                          MATURITY
AMOUNT IN                                                                        COUPON MATURITY  ON DATE OF
THOUSANDS                                                                        RATE     DATE     PURCHASE      VALUE
- -------------------------------------------------------------------------------------------------------------------------
<C>        <S>                                                                   <C>    <C>       <C>         <C>
           NEW YORK TAX-EXEMPT SHORT-TERM MUNICIPAL NOTES (8.1%)
$  1,000   Half Hollow Hills Central School District, 1997-1998 TANs,
             dtd 07/10/97......................................................  4.25%  06/26/98       3.80 % $ 1,002,091
   1,000   Nassau County, Ser 1997 B TANs, dtd 12/23/97........................  4.25   08/31/98       3.78     1,003,037
   1,000   Sachem Central School District, Ser 1997-1998 TANs, dtd 07/10/97....  4.25   06/25/98       3.85     1,001,845
   1,000   Smithtown Central School District, Ser 1997-1998 TANs,
             dtd 07/30/97......................................................  4.50   06/29/98       3.90     1,002,835
                                                                                                              -----------
 
           TOTAL NEW YORK TAX-EXEMPT SHORT-TERM MUNICIPAL NOTES
           (AMORTIZED COST $4,009,808)......................................................................    4,009,808
                                                                                                              -----------
</TABLE>
 
<TABLE>
<S>                                                                                          <C>     <C>
TOTAL INVESTMENTS
(AMORTIZED COST $51,059,808) (A)...........................................................  103.5 %   51,059,808
 
LIABILITIES IN EXCESS OF CASH AND OTHER ASSETS.............................................   (3.5)    (1,724,220)
                                                                                             ------  ------------
 
NET ASSETS.................................................................................  100.0 % $ 49,335,588
                                                                                             ------  ------------
                                                                                             ------  ------------
</TABLE>
 
- ---------------------
 
AMT   Alternative Minimum Tax.
BANs  Bond Anticipation Notes.
TANs  Tax Anticipation Notes.
 +    Rate shown is the rate in effect at December 31, 1997.
 *    Date on which the principal amount can be recovered through demand.
(a)   Cost is the same for federal income tax purposes.
 
BOND INSURANCE:
FGIC  Financial Guaranty Insurance Company.
FSA   Financial Security Assurance Inc.
MBIA  Municipal Bond Investors Assurance Corporation.
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       24
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
DECEMBER 31, 1997
 
<TABLE>
<S>                                                                                              <C>
ASSETS:
Investments in securities, at value
  (amortized cost $51,059,808).................................................................  $51,059,808
Cash...........................................................................................      189,427
Interest receivable............................................................................      236,160
Prepaid expenses...............................................................................        8,135
                                                                                                 -----------
 
     TOTAL ASSETS..............................................................................   51,493,530
                                                                                                 -----------
 
LIABILITIES:
Payable for:
    Investments purchased......................................................................    1,906,512
    Shares of beneficial interest repurchased..................................................      145,883
    Investment management fee..................................................................       22,427
    Plan of distribution fee...................................................................        4,486
Accrued expenses...............................................................................       78,634
                                                                                                 -----------
 
     TOTAL LIABILITIES.........................................................................    2,157,942
                                                                                                 -----------
 
     NET ASSETS................................................................................  $49,335,588
                                                                                                 -----------
                                                                                                 -----------
 
COMPOSITION OF NET ASSETS:
Paid-in-capital................................................................................  $49,335,989
Accumulated undistributed net investment income................................................           20
Accumulated net realized loss..................................................................         (421)
                                                                                                 -----------
 
     NET ASSETS................................................................................  $49,335,588
                                                                                                 -----------
                                                                                                 -----------
 
NET ASSET VALUE PER SHARE,
  49,335,989 SHARES OUTSTANDING (UNLIMITED SHARES AUTHORIZED OF $.01 PAR VALUE)................        $1.00
                                                                                                 -----------
                                                                                                 -----------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       25
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 1997
 
<TABLE>
<S>                                                                                               <C>
NET INVESTMENT INCOME:
 
INTEREST INCOME.................................................................................  $1,590,696
                                                                                                  ----------
 
EXPENSES
Investment management fee.......................................................................     221,429
Professional fees...............................................................................      51,392
Plan of distribution fee........................................................................      43,344
Transfer agent fees and expenses................................................................      42,262
Shareholder reports and notices.................................................................      34,424
Trustees' fees and expenses.....................................................................      16,079
Registration fees...............................................................................       7,898
Custodian fees..................................................................................       5,065
Other...........................................................................................       4,390
                                                                                                  ----------
 
     TOTAL EXPENSES.............................................................................     426,283
Less: expense offset............................................................................      (5,065)
                                                                                                  ----------
 
     NET EXPENSES...............................................................................     421,218
                                                                                                  ----------
 
NET INVESTMENT INCOME AND NET INCREASE..........................................................  $1,169,478
                                                                                                  ----------
                                                                                                  ----------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       26
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                                          FOR THE YEAR       FOR THE YEAR
                                                                              ENDED              ENDED
                                                                        DECEMBER 31, 1997  DECEMBER 31, 1996
- ------------------------------------------------------------------------------------------------------------
<S>                                                                     <C>                <C>
 
INCREASE (DECREASE) IN NET ASSETS:
 
OPERATIONS:
Net investment income and net increase................................  $      1,169,478   $      1,052,166
 
Dividends from net investment income..................................        (1,169,485 )       (1,052,173 )
 
Net increase from transactions in shares of beneficial interest.......         8,577,349          1,650,231
                                                                        -----------------  -----------------
 
     NET INCREASE.....................................................         8,577,342          1,650,224
 
NET ASSETS:
Beginning of period...................................................        40,758,246         39,108,022
                                                                        -----------------  -----------------
 
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF $20 AND $27,
    RESPECTIVELY).....................................................  $     49,335,588   $     40,758,246
                                                                        -----------------  -----------------
                                                                        -----------------  -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       27
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1997
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Dean Witter New York Municipal Money Market Trust (the "Fund") is registered
under the Investment Company Act of 1940, as amended (the "Act"), as a
non-diversified, open-end management investment company. The Fund's investment
objective is to provide a high level of daily income which is exempt from
federal and New York income tax, consistent with stability of principal and
liquidity. The Fund was organized as a Massachusetts business trust on December
28, 1989 and commenced operations on March 20, 1990.
 
The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates.
 
The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- Portfolio securities are valued at amortized
cost, which approximates market value.
 
B. ACCOUNTING FOR INVESTMENTS --  Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined on the identified cost method.
The Fund amortizes premiums and accretes discounts over the life of the
respective securities. Interest income is accrued daily.
 
C. FEDERAL INCOME TAX STATUS --  It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable and nontaxable income to its
shareholders. Accordingly, no federal income tax provision is required.
 
D. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS --  The Fund records dividends
and distributions to shareholders as of the close of each business day.
 
2. INVESTMENT MANAGEMENT AGREEMENT
 
Pursuant to an Investment Management Agreement with the Dean Witter InterCapital
Inc. (the "Investment Manager"), the Fund pays the Investment Manager a
management fee, accrued daily and payable monthly, by applying the following
annual rates to the net assets of the Fund determined as of the close of each
business day: 0.50% to the portion of daily net assets not exceeding $500
million; 0.425% to the portion of daily net assets exceeding $500 million but
not exceeding
 
                                       28
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1997, CONTINUED
 
$750 million; 0.375% to the portion of daily net assets exceeding $750 million
but not exceeding $1 billion; 0.35% to the portion of daily net assets exceeding
$1 billion but not exceeding $1.5 billion; 0.325% to the portion of daily net
assets exceeding $1.5 billion but not exceeding $2 billion; 0.30% to the portion
of daily net assets exceeding $2 billion but not exceeding $2.5 billion; 0.275%
to the portion of daily net assets exceeding $2.5 billion but not exceeding $3
billion; and 0.25% to the portion of daily net assets exceeding $3 billion.
 
Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of all
personnel, including officers of the Fund who are employees of the Investment
Manager. The Investment Manager also bears the cost of telephone services, heat,
light, power and other utilities provided to the Fund.
 
3. PLAN OF DISTRIBUTION
 
Dean Witter Distributors Inc. (the "Distributor"), an affiliate of the
Investment Manager, is the distributor of the Fund's shares and, in accordance
with a Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act,
finances certain expenses in connection therewith.
 
Under the Plan, the Distributor bears the expense of all promotional and
distribution related activities on behalf of the Fund, except for expenses that
the Trustees determine to reimburse, as described below. The following
activities and services may be provided by the Distributor and other
broker-dealers under the Plan: (1) compensation to, and expenses of, the
Distributor and other broker-dealers; (2) sales incentives and bonuses to sales
representatives and to marketing personnel in connection with promoting sales of
the Fund's shares; (3) expenses incurred in connection with promoting sales of
the Fund's shares; (4) preparing and distributing sales literature; and (5)
providing advertising and promotional activities, including direct mail
solicitation and television, radio, newspaper, magazine and other media
advertisements.
 
The Fund is authorized to reimburse the Distributor for specific expenses the
Distributor incurs or plans to incur in promoting the distribution of the Fund's
shares. The amount of each monthly reimbursement payment may in no event exceed
an amount equal to a payment at the annual rate of 0.15% of the Fund's average
daily net assets during the month. Expenses incurred by the Distributor
 
                                       29
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1997, CONTINUED
 
pursuant to the Plan in any fiscal year will not be reimbursed by the Fund
through payments accrued in any subsequent fiscal year. For the year ended
December 31, 1997, the distribution fee was accrued at the annual rate of 0.10%.
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales/maturities of portfolio securities
for the year ended December 31, 1997 aggregated $117,696,530 and $107,430,000,
respectively.
 
Dean Witter Trust FSB, an affiliate of the Investment Manager and Distributor,
is the Fund's transfer agent. At December 31, 1997, the Fund had transfer agent
fees and expenses payable of approximately $1,400.
 
The Fund has an unfunded noncontributory defined benefit pension plan covering
all independent Trustees of the Fund who will have served as independent
Trustees for at least five years at the time of retirement. Benefits under this
plan are based on years of service and compensation during the last five years
of service. Aggregate pension costs for the year ended December 31, 1997
included in Trustees' fees and expenses in the Statement of Operations amounted
to $2,255. At December 31, 1997, the Fund had an accrued pension liability of
$45,691 which is included in accrued expenses in the Statement of Assets and
Liabilities.
 
5. SHARES OF BENEFICIAL INTEREST
 
Transactions in shares of beneficial interest, at $1.00 per share, were as
follows:
 
   
<TABLE>
<CAPTION>
                                                                     FOR THE
                                                                      YEAR        FOR THE YEAR
                                                                      ENDED          ENDED
                                                                    DECEMBER      DECEMBER 31,
                                                                    31, 1997          1996
                                                                   -----------   --------------
<S>                                                                <C>           <C>
Shares sold......................................................  108,032,544      94,893,021
Shares issued in reinvestment of dividends.......................   1,169,485        1,052,173
                                                                   -----------   --------------
                                                                   109,202,029      95,945,194
Shares repurchased...............................................  (100,624,680)   (94,294,963)
                                                                   -----------   --------------
Net increase in shares outstanding...............................   8,577,349        1,650,231
                                                                   -----------   --------------
                                                                   -----------   --------------
</TABLE>
    
 
   
6. FINANCIAL HIGHLIGHTS
    
 
See the "Financial Highlights" table on page 4 of this Prospectus.
 
                                       30
<PAGE>
DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND TRUSTEES
OF DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST
 
   
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations and of
changes in net assets and the financial highlights (appearing in the "Financial
Highlights" table on page 4 of this Prospectus) present fairly, in all material
respects, the financial position of Dean Witter New York Municipal Money Market
Trust (the "Fund") at December 31, 1997, the results of its operations for the
year then ended, the changes in its net assets for each of the two years in the
period then ended and the financial highlights for each of the seven years in
the period then ended and for the period March 20, 1990 (commencement of
operations) through December 31, 1990, in conformity with generally accepted
accounting principles. These financial statements and financial highlights
(hereafter referred to as "financial statements") are the responsibility of the
Fund's management; our responsibility is to express an opinion on these
financial statements based on our audits. We conducted our audits of these
financial statements in accordance with generally accepted auditing standards
which require that we plan and perform the audit to obtain reasonable assurance
about whether the financial statements are free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits, which included
confirmation of securities at December 31, 1997 by correspondence with the
custodian, provide a reasonable basis for the opinion expressed above.
    
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
   
NEW YORK, NEW YORK 10036
FEBRUARY 6, 1998
    
 
   
                      1997 FEDERAL TAX NOTICE (UNAUDITED)
    
 
   
       For  the year ended December 31, 1997, all of the Fund's dividends
       from  net  investment  income  were  exempt  interest   dividends,
       excludable from gross income for Federal income tax purposes.
    
 
                                       31
<PAGE>
Dean Witter New York
Municipal Money Market Trust
Two World Trade Center
New York, New York 10048
 
TRUSTEES
 
   
Michael Bozic
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire
Wayne E. Hedien
Dr. Manuel H. Johnson
Michael E. Nugent
Philip J. Purcell
John L. Schroeder
    
 
OFFICERS
 
Charles A. Fiumefreddo
Chairman and Chief Executive Officer
Barry Fink
Vice President, Secretary and General Counsel
Katherine H. Stromberg
Vice President
Thomas F. Caloia
Treasurer
 
CUSTODIAN
 
The Bank of New York
90 Washington Street
New York, New York 10286
 
TRANSFER AGENT AND
DIVIDEND DISBURSING AGENT
 
   
Dean Witter Trust FSB
Harborside Financial Center, Plaza Two,
Jersey City, New Jersey 07311
    
 
INDEPENDENT ACCOUNTANTS
 
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036
 
INVESTMENT MANAGER
 
Dean Witter InterCapital Inc.
 
Dean Witter
New York Municipal
Money Market
Trust
 
   
                                               [PHOTO]
                                                 PROSPECTUS -- FEBRUARY 26, 1998
    
<PAGE>
 
   
<TABLE>
<S>                                                         <C>
STATEMENT OF ADDITIONAL INFORMATION                         DEAN WITTER
FEBRUARY 26, 1998                                           NEW YORK MUNICIPAL
                                                            MONEY MARKET TRUST
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
    Dean Witter New York Municipal Money Market Trust (the "Fund") is an
open-end, non-diversified management investment company whose investment
objective is to provide as high a level of daily income exempt from federal and
New York income tax as is consistent with stability of principal and liquidity.
The Fund seeks to achieve its objective by investing primarily in high quality
tax-exempt securities with short-term maturities, including Municipal Bonds,
Municipal Notes and Municipal Commercial Paper. (See "Investment Practices and
Policies.")
    
 
    The Fund is authorized to reimburse specific expenses incurred in promoting
the distribution of the Fund's shares pursuant to a Plan of Distribution
pursuant to Rule 12b-1 under the Investment Company Act of 1940. Reimbursement
may in no event exceed an amount equal to payments at the annual rate of 0.15%
of the average daily net assets of the Fund.
 
   
    A Prospectus for the Fund, dated February 26, 1998, which provides the basic
information you should know before investing in the Fund, may be obtained
without charge by request of the Fund at its address or at the telephone numbers
listed below. This Statement of Additional Information contains information in
addition to and more detailed than that set forth in the Prospectus. It is
intended to provide additional information regarding the activities and
operations of the Fund, and should be read in conjunction with the Prospectus.
    
 
Dean Witter New York Municipal Money Market Trust
Two World Trade Center
New York, New York 10048
(800) 869-NEWS (toll-free) or
(212) 392-2550
<PAGE>
TABLE OF CONTENTS
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                                                                           <C>
The Fund and its Management.................................................     3
 
Trustees and Officers.......................................................     6
 
Investment Practices and Policies...........................................    12
 
Investment Restrictions.....................................................    16
 
Portfolio Transactions and Brokerage........................................    18
 
Purchase of Fund Shares.....................................................    24
 
How Net Asset Value Is Determined...........................................    31
 
Redemption of Fund Shares...................................................    33
 
Dividends, Distributions and Taxes..........................................    34
 
Description of Shares.......................................................    38
 
Custodian and Transfer Agent................................................    38
 
Independent Accountants.....................................................    38
 
Reports to Shareholders.....................................................    38
 
Legal Counsel...............................................................    38
 
Experts.....................................................................    38
 
Registration Statement......................................................    39
 
Financial Statements........................................................    39
 
Appendix....................................................................    40
</TABLE>
    
 
                                       2
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
THE FUND
 
    The Fund is a Trust of the type commonly known as a "Massachusetts business
trust" and was organized under the laws of the Commonwealth of Massachusetts on
December 28, 1989. On February 19, 1993, the Fund's name was changed to its
current name Dean Witter New York Money Market Trust. The Trust was formerly
known as Dean Witter/Sears New York Municipal Money Market Trust.
 
   
    As of December 31, 1997, no shareholder was known to own beneficially or of
record as much as 5% of the outstanding shares of the Fund. The percentage of
ownership of shares of the Fund changes from time to time depending on purchases
and redemptions by shareholders and the total number of shares outstanding.
    
 
THE INVESTMENT MANAGER
 
   
    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment Manager"),
a Delaware corporation, whose address is Two World Trade Center, New York, New
York 10048, is the Fund's Investment Manager. The Investment Manager, which was
incorporated in July, 1992, is a wholly-owned subsidiary of Morgan Stanley, Dean
Witter, Discover & Co. ("MSDWD"), a Delaware corporation. In an internal
reorganization which took place in January, 1993, InterCapital assumed the
investment advisory, administrative and management activities previously
performed by the InterCapital Division of Dean Witter Reynolds Inc. ("DWR"), a
broker-dealer affiliate of InterCapital. (As hereinafter used in this Statement
of Additional Information, the terms "InterCapital" and "Investment Manager"
refer to DWR's InterCapital Division prior to the internal reorganization and to
Dean Witter InterCapital Inc. thereafter.) The daily management of the Fund is
conducted by or under the direction of officers of the Fund and of the
Investment Manager, subject to review by the Fund's Board of Trustees.
Information as to these Trustees and officers is contained under the caption
"Trustees and Officers."
    
 
   
    The Investment Manager is also the investment manager or investment adviser
of the following investment companies: Dean Witter Liquid Asset Fund Inc.,
InterCapital Income Securities Inc., Dean Witter High Yield Securities Inc.,
Dean Witter Tax-Free Daily Income Trust, Dean Witter Developing Growth
Securities Trust, Dean Witter Tax-Exempt Securities Trust, Dean Witter Natural
Resource Development Securities Inc., Dean Witter Dividend Growth Securities
Inc., Dean Witter American Value Fund, Dean Witter U.S. Government Money Market
Trust, Dean Witter Variable Investment Series, Dean Witter World Wide Investment
Trust, Dean Witter Select Municipal Reinvestment Fund, Dean Witter U.S.
Government Securities Trust, Dean Witter California Tax-Free Income Fund, Dean
Witter New York Tax-Free Income Fund, Dean Witter Convertible Securities Trust,
Dean Witter Federal Securities Trust, Dean Witter California Tax-Free Daily
Income Trust, Dean Witter Value-Added Market Series, High Income Advantage
Trust, High Income Advantage Trust II, High Income Advantage Trust III, Dean
Witter Government Income Trust, InterCapital Insured Municipal Bond Trust,
InterCapital Quality Municipal Investment Trust, InterCapital Insured Municipal
Trust, InterCapital Quality Municipal Income Trust, InterCapital Insured
Municipal Income Trust, InterCapital California Insured Municipal Income Trust,
Dean Witter Utilities Fund, Dean Witter Strategist Fund, Dean Witter
Intermediate Income Securities, Dean Witter World Wide Income Trust, Dean Witter
Capital Growth Securities, Dean Witter European Growth Fund Inc., Dean Witter
Precious Metals and Minerals Trust, Dean Witter Pacific Growth Fund Inc., Dean
Witter Global Short-Term Income Fund Inc., Dean Witter Multi-State Municipal
Series Trust, Dean Witter Short-Term U.S. Treasury Trust, Dean Witter
Diversified Income Trust, Dean Witter Health Sciences Trust, Dean Witter
Retirement Series, InterCapital Quality Municipal Securities, InterCapital
California Quality Municipal Securities, InterCapital New York Quality Municipal
Securities, Dean Witter Global Dividend Growth Securities, Dean Witter Limited
Term Municipal Trust, Dean Witter Short-Term Bond Fund, InterCapital Insured
Municipal Securities, InterCapital Insured California Municipal Securities, Dean
Witter Global Utilities Fund, Dean Witter International SmallCap Fund, Dean
Witter Mid-Cap Growth Fund, Dean Witter Select Dimensions Investment Series,
Dean Witter Global Asset Allocation Fund, Dean Witter Balanced Growth Fund, Dean
Witter Balanced Income Fund, Dean Witter Hawaii Municipal Trust, Dean Witter
Capital Appreciation Fund, Dean Witter Information Fund, Dean Witter
Intermediate Term U.S. Treasury
    
 
                                       3
<PAGE>
   
Trust, Dean Witter Japan Fund, Dean Witter Income Builder Fund, Dean Witter
Special Value Fund, Dean Witter Financial Services Trust, Dean Witter Market
Leader Trust, Dean Witter S&P 500 Index Fund, Dean Witter Fund of Funds, Morgan
Stanley Dean Witter Competitive Edge Fund, "BEST IDEAS" PORTFOLIO, Active Assets
Money Trust, Active Assets Tax-Free Trust, Active Assets California Tax-Free
Trust and Active Assets Government Securities Trust. The Investment Manager also
serves as administrator to Municipal Income Trust, Municipal Income Trust II,
Municipal Income Trust III, Municipal Income Opportunities Trust, Municipal
Income Opportunities Trust II, Municipal Income Opportunities Trust III,
Municipal Premium Income Trust and Prime Income Trust. The foregoing investment
companies, together with the Fund, are collectively referred to as the Dean
Witter Funds. In addition, Dean Witter Services Company, Inc. ("DWSC"), a
wholly-owned subsidiary of InterCapital, serves as manager for the following
companies for which TCW Funds Management, Inc. is the investment adviser: TCW/DW
Core Equity Trust, TCW/DW North American Government Income Trust, TCW/DW Latin
American Growth Fund, TCW/DW Income and Growth Fund, TCW/DW Small Cap Growth
Fund, TCW/DW Balanced Fund, TCW/ DW Total Return Trust, TCW/DW Mid-Cap Equity
Trust, TCW/DW Global Telecom Trust, TCW/DW Strategic Income Trust, TCW/DW
Emerging Markets Opportunities Trust, TCW/DW Term Trust 2000, TCW/DW Term Trust
2002 and TCW/DW Term Trust 2003 (the "TCW/DW Funds"). InterCapital also serves
as: (i) administrator of The BlackRock Strategic Term Trust Inc., a closed-end
investment company; (ii) sub-administrator of MassMutual Participation Investors
and Templeton Global Governments Income Trust, closed-end investment companies;
and (iii) investment adviser of Offshore Dividend Growth Fund and Offshore Money
Market Fund, mutual funds established under the laws of the Cayman Islands and
available only to investors who are participants in DWR's International Active
Assets Account program and are neither citizens nor residents of the United
States.
    
 
    Pursuant to an Investment Management Agreement (the "Agreement") with the
Investment Manager, the Fund has retained the Investment Manager to manage the
investment of the Fund's assets, including the placing of orders for the
purchase and sale of portfolio securities. The Investment Manager obtains and
evaluates such information and advice relating to the economy, securities
markets, and specific securities as it considers necessary or useful to
continuously manage the assets of the Fund in a manner consistent with its
investment objective.
 
    Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, such office space, facilities,
equipment, clerical help, bookkeeping and certain legal services as the Fund may
reasonably require in the conduct of its business, including the preparation of
prospectuses, statements of additional information, proxy statements and reports
required to be filed with federal and state securities commissions (except
insofar as the participation or assistance of independent accountants and
attorneys is, in the opinion of the Investment Manager, necessary or desirable).
In addition, the Investment Manager pays the salaries of all personnel,
including officers of the Fund, who are employees of the Investment Manager. The
Investment Manager also bears the cost of telephone service, heat, light, power
and other utilities provided to the Fund and the cost of printing (in excess of
costs borne by the Fund) and distributing prospectuses and supplements thereto
of the Fund used for sales purposes.
 
    Effective December 31, 1993, pursuant to a Services Agreement between
InterCapital and DWSC, DWSC began to provide the administrative services to the
Fund which were previously performed directly by InterCapital. On April 17,
1995, DWSC was reorganized in the State of Delaware, necessitating the entry
into a new Services Agreement by InterCapital and DWSC on that date. The
foregoing internal reorganizations did not result in any change in the nature or
scope of the administrative services being provided to the Fund or any of the
fees being paid by the Fund for the overall services being performed under the
terms of the existing Management Agreement.
 
   
    Expenses not expressly assumed by the Investment Manager under the Agreement
or by the Distributor of the Fund's shares, Dean Witter Distributors Inc.
("Distributors" or the "Distributor"), (see "Purchase of Fund Shares") will be
paid by the Fund. Such expenses include, but are not limited to: the
distribution fee under the Plan pursuant to Rule 12b-1 (See "Purchase of Fund
Shares"); charges and expenses of any registrar, custodian, stock transfer and
dividend disbursing agent; brokerage
    
 
                                       4
<PAGE>
   
commissions; taxes; engraving and printing of share certificates; registration
costs of the Fund and its shares under federal and state securities laws; the
cost and expense of printing, including typesetting, and distributing
Prospectuses and Statements of Additional Information of the Fund and
supplements thereto to the Fund's shareholders; all expenses of shareholder and
Trustee meetings and of preparing, printing and mailing of proxy statements and
reports to shareholders; fees and travel expenses of Trustees or members of any
advisory board or committee who are not employees of the Investment Manager or
any corporate affiliate of the Investment Manager; all expenses incident to any
dividend, withdrawal or redemption options; charges and expenses of any outside
service used for pricing of the Fund's shares; fees and expenses of legal
counsel, including counsel to the Trustees who are not interested persons of the
Fund or of the Investment Manager (not including compensation or expenses of
attorneys who are employees of the Investment Manager) and independent
accountants; membership dues of industry associations; interest on Fund
borrowings; postage; insurance premiums on property or personnel (including
officers and Trustees) of the Fund which inure to its benefit; extraordinary
expenses (including, but not limited to, legal claims and liabilities and
litigation costs and any indemnification relating thereto); and all other costs
of the Fund's operation.
    
 
   
    As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund assumed by the Investment Manager, the Fund pays the
Investment Manager monthly compensation calculated daily by applying the
following annual rates to the net assets of the Fund, determined as of the close
of business on every business day: 0.50% of the portion of the daily net assets
not exceeding $500 million; 0.425% of the portion of the daily net assets
exceeding $500 million but not exceeding $750 million; 0.375% of the portion of
the daily net assets exceeding $750 million but not exceeding $1 billion; 0.35%
of the portion of the daily net assets exceeding $1 billion but not exceeding
$1.5 billion; 0.325% of the portion of the daily net assets exceeding $1.5
billion but not exceeding $2 billion; 0.30% of the portion of the daily net
assets exceeding $2 billion but not exceeding $2.5 billion; 0.275% of the
portion of the daily net assets exceeding $2.5 billion but not exceeding $3
billion; and 0.25% of the portion of the daily net assets exceeding $3 billion.
For the fiscal years ended December 31, 1995, December 31, 1996 and December 31,
1997, the Fund accrued to the Investment Manager total compensation of $218,571,
$212,463 and $221,429, respectively.
    
 
    The Agreement provides that in the absence of willful misfeasance, bad
faith, gross negligence or reckless disregard of its obligations thereunder, the
Investment Manager is not liable to the Fund or any of its investors for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors. The Agreement in no way restricts the Investment Manager from
acting as investment manager or adviser to others.
 
   
    The Agreement was initially approved by the Trustees on February 21, 1997,
and by the shareholders of the Fund at a Special Meeting of Shareholders held on
May 21, 1997. The Agreement is substantially identical to a prior investment
management agreement which was initially approved by the Trustees on October 22,
1992, and by the Shareholders at a Special Meeting of Shareholders held on
January 12, 1993. The Agreement took effect on May 31, 1997 upon the
consummation of the merger of Dean Witter, Discover & Co. with Morgan Stanley
Group Inc. The Agreement may be terminated at any time, without penalty, on
thirty days' notice, by the Board of Trustees of the Fund, by the holders of a
majority, as defined in the Investment Company Act of 1940, as amended (the
"Act"), of the outstanding shares of the Fund, or by the Investment Manager. The
Agreement will automatically terminate in the event of its assignment (as
defined in the Act).
    
 
   
    Under its terms, the Agreement has an initial term ending April 30, 1999,
and will remain in effect from year to year thereafter, provided continuance of
the Agreement is approved at least annually by the vote of the holders of a
majority (as defined in the Act) of the outstanding shares of the Fund, or by
the Board of Trustees of the Fund; provided that in either event such
continuance is approved annually by the vote of a majority of the Trustees of
the Fund who are not parties to the Agreement as "interested persons" (as
defined in the Act) of any such party (the "Independent Trustees"), which vote
must be cast in person at a meeting called for the purpose of voting on such
approval.
    
 
                                       5
<PAGE>
    The Fund has acknowledged that the name "Dean Witter" is a property right of
DWR. The Fund has agreed that DWR or its parent company may use, or at any time,
permit others to use, the name "Dean Witter." The Fund has also agreed that in
the event the investment management contract between InterCapital and the Fund
is terminated, or if the affiliation between InterCapital and its parent company
is terminated, the Fund will eliminate the name "Dean Witter" from its name if
DWR or its parent company shall so request.
 
TRUSTEES AND OFFICERS
- --------------------------------------------------------------------------------
 
   
    The Trustees and Executive Officers of the Fund, their principal business
occupations during the last five years and their affiliations, if any, with
InterCapital, and with the 84 Dean Witter Funds and the 14 TCW/DW Funds are
shown below.
    
 
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Michael Bozic (57)                                      Chairman and Chief Executive Officer of Levitz Furniture
Trustee                                                 Corporation (since November, 1995); Director or Trustee of
c/o Levitz Furniture Corporation                        the Dean Witter Funds; formerly President and Chief
6111 Broken Sound Parkway, N.W.                         Executive Officer of Hills Department Stores (May,
Boca Raton, Florida                                     1991-July, 1995); formerly variously Chairman, Chief
                                                        Executive Officer, President and Chief Operating Officer
                                                        (1987-1991) of the Sears Merchandise Group of Sears,
                                                        Roebuck and Co.; Director of Eaglemark Financial Services,
                                                        Inc., the United Negro College Fund and Weirton Steel
                                                        Corporation.
 
Charles A. Fiumefreddo* (64)                            Chairman, Chief Executive Officer and Director of
Chairman of the Board,                                  InterCapital, Distributors and DWSC; Executive Vice
President, Chief Executive Officer                      President and Director of DWR; Chairman of the Board,
 and Trustee                                            Director or Trustee, President and Chief Executive Officer
Two World Trade Center                                  of the Dean Witter Funds; Chairman, Chief Executive
New York, New York                                      Officer and Trustee of the TCW/DW Funds; Chairman and
                                                        Director of Dean Witter Trust FSB ("DWT"); Director and/or
                                                        officer of various MSDWD subsidiaries.
 
Edwin J. Garn (65)                                      Director or Trustee of the Dean Witter Funds; formerly
Trustee                                                 United States Senator (R-Utah) (1974-1992) and Chairman,
c/o Huntsman Corporation                                Senate Banking Committee (1980-1986); formerly Mayor of
500 Huntsman Way                                        Salt Lake City, Utah (1971-1974); formerly Astronaut,
Salt Lake City, Utah                                    Space Shuttle Discovery (April 12-19, 1985); Vice
                                                        Chairman, Huntsman Corporation; Director of Franklin Covey
                                                        (time management systems), John Alden Financial Corp.
                                                        (health insurance), United Space Alliance (joint venture
                                                        between Lockheed Martin and the Boeing Company) and Nuskin
                                                        Asia Pacific (multilevel marketing); member of the board
                                                        of various civic and charitable organizations.
</TABLE>
    
 
                                       6
<PAGE>
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
John R. Haire (73)                                      Chairman of the Audit Committee and Chairman of the
Trustee                                                 Committee of the Independent Directors or Trustees and
Two World Trade Center                                  Director or Trustee of the Dean Witter Funds; Chairman of
New York, New York                                      the Audit Committee and Chairman of the Committee of the
                                                        Independent Trustees and Trustee of the TCW/DW Funds;
                                                        formerly President, Council for Aid to Education
                                                        (1978-1989) and Chairman and Chief Executive Officer of
                                                        Anchor Corporation, an Investment Adviser (1964-1978).
 
Wayne E. Hedien (64)                                    Retired; Director or Trustee of the Dean Witter Funds;
Trustee                                                 Director of the PMI Group, Inc. (private mortgage
c/o Gordon Altman Butowsky                              insurance); Trustee and Vice Chairman of The Field Museum
 Weitzen Shalov & Wein                                  of Natural History; formerly associated with the Allstate
Counsel to the Independent Trustees                     Companies (1966-1994), most recently as Chairman of The
114 West 47th Street                                    Allstate Corporation (March, 1993-December, 1994) and
New York, New York                                      Chairman and Chief Executive Officer of its wholly-owned
                                                        subsidiary, Allstate Insurance Company (July, 1989-Decem-
                                                        ber, 1994); director of various other business and
                                                        charitable organizations.
 
Dr. Manuel H. Johnson (49)                              Senior Partner, Johnson Smick International, Inc., a
Trustee                                                 consulting firm; Director or Trustee of the Dean Witter
c/o Johnson Smick International, Inc.                   Funds; Trustee of the TCW/DW Funds; Director of NASDAQ
1133 Connecticut Avenue, N.W.                           (since June, 1995); Co-Chairman and a founder of the Group
Washington, DC                                          of Seven Council (G7C), an international economic
                                                        commission; Director of Greenwich Capital Markets, Inc.
                                                        (broker-dealer); Chairman and Trustee of the Financial
                                                        Accounting Foundation (oversight organization for the
                                                        FASB); formerly Vice Chairman of the Board of Governors of
                                                        the Federal Reserve System (1986-1990) and Assistant
                                                        Secretary of the U.S. Treasury (1982-1986).
 
Michael E. Nugent (61)                                  General Partner, Triumph Capital, L.P., a private
Trustee                                                 investment partnership; Director or Trustee of the Dean
c/o Triumph Capital, L.P.                               Witter Funds; Trustee of the TCW/DW Funds; formerly Vice
237 Park Avenue                                         President, Bankers Trust Company and BT Capital
New York, New York                                      Corporation (1984-1988); Director of various business
                                                        organizations.
 
Philip J. Purcell* (54)                                 Chairman of the Board of Directors and Chief Executive
Trustee                                                 Officer of MSDWD, DWR and Novus Credit Services Inc.;
1585 Broadway                                           Director of InterCapital, DWSC and Distributors; Director
New York, New York                                      or Trustee of the Dean Witter Funds; Director and/or
                                                        officer of various MSDWD subsidiaries.
</TABLE>
    
 
                                       7
<PAGE>
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
John L. Schroeder (67)                                  Retired; Director or Trustee of the Dean Witter Funds;
Trustee                                                 Trustee of the TCW/DW Funds; Director of Citizens
c/o Gordon Altman Butowsky Weitzen                      Utilities Company; formerly Executive Vice President and
 Shalov & Wein                                          Chief Investment Officer of the Home Insurance Company
Counsel to the Independent Trustees                     (August, 1991-September, 1995).
114 West 47th Street
New York, New York
 
Barry Fink (43)                                         Senior Vice President (since March, 1997) and Secretary
Vice President, Secretary and                           and General Counsel (since February, 1997) of InterCapital
General Counsel                                         and DWSC; Senior Vice President (since March, 1997) and
Two World Trade Center                                  Assistant Secretary and Assistant General Counsel (since
New York, New York                                      February, 1997) of Distributors; Assistant Secretary of
                                                        DWR (since August, 1996); Vice President, Secretary and
                                                        General Counsel of the Dean Witter Funds and the TCW/DW
                                                        Funds (since February, 1997); previously First Vice
                                                        President (June, 1993-February, 1997), Vice President
                                                        (until June, 1993) and Assistant Secretary and Assistant
                                                        General Counsel of InterCapital and DWSC and Assistant
                                                        Secretary of the Dean Witter Funds and TCW/DW Funds.
 
Katherine H. Stromberg (49)                             Vice President of InterCapital; Vice President of various
Vice President                                          Dean Witter Funds.
Two World Trade Center
New York, New York
 
Thomas F. Caloia (51)                                   First Vice President and Assistant Treasurer of
Treasurer                                               InterCapital and DWSC; Treasurer of the Dean Witter Funds
Two World Trade Center                                  and the TCW/DW Funds.
New York, New York
<FN>
- ------------------------
*Denotes Trustees who are "Interested persons" of the Fund, as defined in the
 Act.
</TABLE>
    
 
   
    In addition, Robert M. Scanlan, President and Chief Operating Officer of
InterCapital and DWSC, Executive Vice President of Distributors and DWT and
Director of DWT, Mitchell M. Merin, President and Chief Strategic Officer of
InterCapital and DWSC, Executive Vice President of Distributors and DWT, and
Director of DWT, Executive Vice President, Chief Administrative Officer and
Director of DWR, and Director of SPS Transaction Services, Inc. and various
other MSDWD subsidiaries, Joseph J. McAlinden, Executive Vice President and
Chief Investment Officer of InterCapital and Director of DWT, Robert S.
Giambrone, Senior Vice President of InterCapital, DWSC, Distributor and DWT and
Director of DWT, Peter M. Avelar, Jonathan R. Page and James F. Willison, Senior
Vice Presidents of InterCapital, and Joseph R. Arcieri and Gerard J. Lian, Vice
Presidents of InterCapital, are Vice Presidents of the Fund. In addition,
Marilyn K. Cranney, First Vice President and Assistant General Counsel of
InterCapital and DWSC, and Lou Anne D. McInnis, Carsten Otto and Ruth Rossi,
Vice Presidents and Assistant General Counsels of InterCapital and DWSC, and
Frank Bruttomesso and Todd Lebo, staff attorneys with InterCapital, are
Assistant Secretaries of the Fund.
    
 
   
THE BOARD OF TRUSTEES, THE INDEPENDENT TRUSTEES, AND THE COMMITTEES
    
 
   
    The Board of Trustees consists of nine (9) trustees. These same individuals
also serve as directors or trustees for all of the Dean Witter Funds, and are
referred to in this section as Trustees. As of the date
    
 
                                       8
<PAGE>
   
of this Statement of Additional Information, there are a total of 84 Dean Witter
Funds, comprised of 128 portfolios. As of January 31, 1998, the Dean Witter
Funds had total net assets of approximately $96 billion and more than six
million shareholders.
    
 
   
    Seven Trustees (77% of the total number) have no affiliation or business
connection with InterCapital or any of its affiliated persons and do not own any
stock or other securities issued by InterCapital's parent company, MSDWD. These
are the "disinterested" or "independent" Trustees. The other two Trustees (the
"management Trustees") are affiliated with InterCapital. Four of the seven
independent Trustees are also Independent Trustees of the TCW/DW Funds.
    
 
   
    Law and regulation establish both general guidelines and specific duties for
the Independent Trustees. The Dean Witter Funds seek as Independent Trustees
individuals of distinction and experience in business and finance, government
service or academia; these are people whose advice and counsel are in demand by
others and for whom there is often competition. To accept a position on the
Funds' Boards, such individuals may reject other attractive assignments because
the Funds make substantial demands on their time. Indeed, by serving on the
Funds' Boards, certain Trustees who would otherwise be qualified and in demand
to serve on bank boards would be prohibited by law from doing so.
    
 
   
    All of the Independent Trustees serve as members of the Audit Committee and
the Committee of the Independent Trustees. Three of them also serve as members
of the Derivatives Committee. During the calendar year ended December 31, 1997,
the three Committees held a combined total of seventeen meetings. The Committees
hold some meetings at InterCapital's offices and some outside InterCapital.
Management Trustees or officers do not attend these meetings unless they are
invited for purposes of furnishing information or making a report.
    
 
   
    The Committee of the Independent Trustees is charged with recommending to
the full Board approval of management, advisory and administration contracts,
Rule 12b-1 plans and distribution and underwriting agreements; continually
reviewing Fund performance; checking on the pricing of portfolio securities,
brokerage commissions, transfer agent costs and performance, and trading among
Funds in the same complex; and approving fidelity bond and related insurance
coverage and allocations, as well as other matters that arise from time to time.
The Independent Trustees are required to select and nominate individuals to fill
any Independent Trustee vacancy on the Board of any Fund that has a Rule 12b-1
plan of distribution. Most of the Dean Witter Funds have such a plan.
    
 
   
    The Audit Committee is charged with recommending to the full Board the
engagement or discharge of the Fund's independent accountants; directing
investigations into matters within the scope of the independent accountants'
duties, including the power to retain outside specialists; reviewing with the
independent accountants the audit plan and results of the auditing engagement;
approving professional services provided by the independent accountants and
other accounting firms prior to the performance of such services; reviewing the
independence of the independent accountants; considering the range of audit and
non-audit fees; reviewing the adequacy of the Fund's system of internal
controls; and preparing and submitting Committee meeting minutes to the full
Board.
    
 
   
    Finally, the Board of each Fund has formed a Derivatives Committee to
establish parameters for and oversee the activities of the Fund with respect to
derivative investments, if any, made by the Fund.
    
 
   
DUTIES OF CHAIRMAN OF COMMITTEE OF THE INDEPENDENT TRUSTEES AND AUDIT COMMITTEE
    
 
   
    The Chairman of the Committee of the Independent Trustees and the Audit
Committee maintains an office at the Funds' headquarters in New York. He is
responsible for keeping abreast of regulatory and industry developments and the
Funds' operations and management. He screens and/or prepares written materials
and identifies critical issues for the Independent Trustees to consider,
develops
    
agen-
 
                                       9
<PAGE>
   
das for Committee meetings, determines the type and amount of information that
the Committees will need to form a judgment on various issues, and arranges to
have that information furnished to Committee members. He also arranges for the
services of independent experts and consults with them in advance of meetings to
help refine reports and to focus on critical issues. Members of the Committees
believe that the person who serves as Chairman of both Committees and guides
their efforts is pivotal to the effective functioning of the Committees.
    
 
   
    The Chairman of the Committees also maintains continuous contact with the
Funds' management, with independent counsel to the Independent Trustees and with
the Funds' independent auditors. He arranges for a series of special meetings
involving the annual review of investment advisory, management and other
operating contracts of the Funds and, on behalf of the Committees, conducts
negotiations with the Investment Manager and other service providers. In effect,
the Chairman of the Committees serves as a combination of chief executive and
support staff of the Independent Trustees.
    
 
   
    The Chairman of the Committee of the Independent Trustees and the Audit
Committee is not employed by any other organization and devotes his time
primarily to the services he performs as Committee Chairman and Independent
Trustee of the Dean Witter Funds and as an Independent Trustee and as Chairman
of the Committee of the Independent Trustees and the Audit Committee of the
TCW/DW Funds. The current Committee Chairman has had more than 35 years
experience as a senior executive in the investment company industry.
    
 
   
ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT TRUSTEES FOR ALL DEAN
WITTER FUNDS
    
 
   
    The Independent Trustees and the Funds' management believe that having the
same Independent Trustees for each of the Dean Witter Funds avoids the
duplication of effort that would arise from having different groups of
individuals serving as Independent Trustees for each of the Funds or even of
sub-groups of Funds. They believe that having the same individuals serve as
Independent Trustees of all the Funds tends to increase their knowledge and
expertise regarding matters which affect the Fund complex generally and enhances
their ability to negotiate on behalf of each Fund with the Fund's service
providers. This arrangement also precludes the possibility of separate groups of
Independent Trustees arriving at conflicting decisions regarding operations and
management of the Funds and avoids the cost and confusion that would likely
ensue. Finally, having the same Independent Trustees serve on all Fund Boards
enhances the ability of each Fund to obtain, at modest cost to each separate
Fund, the services of Independent Trustees, and a Chairman of their Committees,
of the caliber, experience and business acumen of the individuals who serve as
Independent Trustees of the Dean Witter Funds.
    
 
   
COMPENSATION OF INDEPENDENT TRUSTEES
    
 
   
    The Fund pays each Independent Trustee an annual fee of $800 plus a per
meeting fee of $50 for meetings of the Board of Trustees or committees of the
Board of Trustees attended by the Trustee (the Fund pays the Chairman of the
Audit Committee an annual fee of $750 and pays the Chairman of the Committee of
the Independent Trustees an additional annual fee of $1,200). If a Board meeting
and a Committee meeting, or more than one Committee meeting, take place on a
single day, the Trustees are paid a single meeting fee by the Fund. The Fund
also reimburses such Trustees for travel and other out-of-pocket expenses
incurred by them in connection with attending such meetings. Trustees and
officers of the Fund who are or have been employed by the Investment Manager or
an affiliated company receive no compensation or expense reimbursement from the
Fund.
    
 
                                       10
<PAGE>
   
    The following table illustrates the compensation paid to the Fund's
Independent Trustees by the Fund for the fiscal year ended December 31, 1997.
    
 
   
                               FUND COMPENSATION
    
 
   
<TABLE>
<CAPTION>
                                                                   AGGREGATE
                                                                 COMPENSATION
NAME OF INDEPENDENT TRUSTEE                                      FROM THE FUND
- --------------------------------------------------------------  ---------------
<S>                                                             <C>
Michael Bozic.................................................      $1,650
Edwin J. Garn.................................................       1,850
John R. Haire.................................................       3,800
Wayne E. Hedien...............................................         482
Dr. Manuel H. Johnson.........................................       1,800
Michael E. Nugent.............................................       1,850
John L. Schroeder.............................................       1,850
</TABLE>
    
 
   
    The following table illustrates the compensation paid to the Fund's
Independent Trustees for the calendar year ended December 31, 1997 for services
to the 84 Dean Witter Funds and, in the case of Messrs. Haire, Johnson, Nugent
and Schroeder, the 14 TCW/DW Funds that were in operation at December 31, 1997.
With respect to Messrs. Haire, Johnson, Nugent and Schroeder, the TCW/DW Funds
are included solely because of a limited exchange privilege between those Funds
and five Dean Witter Money Market Funds. Mr. Hedien's term as Director or
Trustee of each Dean Witter Fund commenced on September 1, 1997.
    
 
   
           CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS
    
 
   
<TABLE>
<CAPTION>
                                                                   FOR SERVICE AS    FOR SERVICE
                                                                    CHAIRMAN OF          AS          TOTAL CASH
                                                                   COMMITTEES OF     CHAIRMAN OF    COMPENSATION
                               FOR SERVICE                          INDEPENDENT     COMMITTEES OF   FOR SERVICES
                              AS DIRECTOR OR                         DIRECTORS/      INDEPENDENT         TO
                               TRUSTEE AND       FOR SERVICE AS     TRUSTEES AND    TRUSTEES AND       84 DEAN
                             COMMITTEE MEMBER     TRUSTEE AND          AUDIT            AUDIT          WITTER
                                OF 84 DEAN      COMMITTEE MEMBER   COMMITTEES OF    COMMITTEES OF     FUNDS AND
NAME OF                           WITTER          OF 14 TCW/DW     84 DEAN WITTER     14 TCW/DW       14 TCW/DW
INDEPENDENT TRUSTEE               FUNDS              FUNDS             FUNDS            FUNDS           FUNDS
- ---------------------------  ----------------   ----------------   --------------   -------------   -------------
<S>                          <C>                <C>                <C>              <C>             <C>
Michael Bozic..............      $133,602           --                 --               --            $133,602
Edwin J. Garn..............       149,702           --                 --               --             149,702
John R. Haire..............       149,702           $73,725           $157,463        $ 25,350         406,240
Wayne E. Hedien............        39,010           --                 --               --              39,010
Dr. Manuel H. Johnson......       145,702            71,125            --               --             216,827
Michael E. Nugent..........       149,702            73,725            --               --             223,427
John L. Schroeder..........       149,702            73,725            --               --             223,427
</TABLE>
    
 
   
    As of the date of this Statement of Additional Information, 57 of the Dean
Witter Funds, including the Fund, have adopted a retirement program under which
an Independent Trustee who retires after serving for at least five years (or
such lesser period as may be determined by the Board) as an Independent Director
or Trustee of any Dean Witter Fund that has adopted the retirement program (each
such Fund referred to as an "Adopting Fund" and each such Trustee referred to as
an "Eligible Trustee") is entitled to retirement payments upon reaching the
eligible retirement age (normally, after attaining age 72). Annual payments are
based upon length of service. Currently, upon retirement, each Eligible Trustee
is entitled to receive from the Adopting Fund, commencing as of his or her
retirement date and continuing for the remainder of his or her life, an annual
retirement benefit (the "Regular Benefit") equal to 25.0% of his or her Eligible
Compensation plus 0.4166666% of such Eligible Compensation for each full month
of service as an Independent Director or Trustee of any Adopting Fund in excess
of five years up to a maximum of 50.0% after ten years of service. The foregoing
percentages may be changed by the Board.(1) "Eligible Compensation" is one-fifth
of the total compensation earned by such Eligible Trustee
 
- ------------------------
    
   
(1) An Eligible Trustee may elect alternate payments of his or her retirement
    benefits based upon the combined life expectancy of such Eligible Trustee
    and his or her spouse on the date of such Eligible Trustee's retirement. The
    amount estimated to be payable under this method, through the remainder of
    the later of the lives of such Eligible Trustee and spouse, will be the
    actuarial equivalent of the Regular Benefit. In addition, the Eligible
    Trustee may elect that the surviving spouse's periodic payment of benefits
    will be equal to either 50% or 100% of the previous periodic amount, an
    election that, respectively, increases or decreases the previous periodic
    amount so that the resulting payments will be the actuarial equivalent of
    the Regular Benefit.
    
 
                                       11
<PAGE>
   
for service to the Adopting Fund in the five year period prior to the date of
the Eligible Trustee's retirement. Benefits under the retirement program are not
secured or funded by the Adopting Funds.
    
 
   
    The following table illustrates the retirement benefits accrued to the
Fund's Independent Trustees by the Fund for the fiscal year ended December 31,
1997 and by the 57 Dean Witter Funds (including the Fund) for the year ended
December 31, 1997, and the estimated retirement benefits for the Fund's
Independent Trustees, to commence upon their retirement, from the Fund as of
December 31, 1997 and from the 57 Dean Witter Funds as of December 31, 1997.
    
 
   
          RETIREMENT BENEFITS FROM THE FUND AND ALL DEAN WITTER FUNDS
    
 
   
<TABLE>
<CAPTION>
                                            FOR ALL ADOPTING FUNDS
                                        -------------------------------       RETIREMENT BENEFITS          ESTIMATED ANNUAL
                                          ESTIMATED                               ACCRUED AS                   BENEFITS
                                          CREDITED                                 EXPENSES               UPON RETIREMENT(2)
                                            YEARS           ESTIMATED       -----------------------     -----------------------
                                        OF SERVICE AT     PERCENTAGE OF                    BY ALL         FROM        FROM ALL
                                         RETIREMENT         ELIGIBLE         BY THE       ADOPTING         THE        ADOPTING
NAME OF INDEPENDENT TRUSTEE             (MAXIMUM 10)      COMPENSATION        FUND          FUNDS         FUND          FUNDS
- ------------------------------------    -------------     -------------     ---------     ---------     ---------     ---------
<S>                                     <C>               <C>               <C>           <C>           <C>           <C>
Michael Bozic.......................              10              50.0%     $     349     $  20,499     $     875     $  47,025
Edwin J. Garn.......................              10              50.0            497        30,878           875        47,025
John R. Haire.......................              10              50.0           (835)      (19,823)(3)     2,211       127,897
Wayne E. Hedien.....................               9              42.5              0             0           744        39,971
Dr. Manuel H. Johnson...............              10              50.0            210        12,832           875        47,025
Michael E. Nugent...................              10              50.0            354        22,546           875        47,025
John L. Schroeder...................               8              41.7            672        39,350           729        39,504
</TABLE>
    
 
- ------------------------
 
   
(2) Based on current levels of compensation. Amount of annual benefits also
    varies depending on the Trustee's elections described in Footnote (1) above.
    
 
   
(3) This number reflects the effect of the extension of Mr. Haire's term as
    Director or Trustee until June 1, 1998.
    
 
   
    As of the date of this Statement of Additional Information, the aggregate
number of shares of beneficial interest of the Fund owned by the Fund's officers
and Trustees as a group was less than 1 percent of the Fund's shares of
beneficial interest outstanding.
    
 
INVESTMENT PRACTICES AND POLICIES
- --------------------------------------------------------------------------------
 
PORTFOLIO SECURITIES
 
    TAXABLE SECURITIES.  As discussed in the Prospectus, the Fund may invest up
to 20% of its total assets in taxable money market instruments and repurchase
agreements. Investments in taxable money market instruments would generally be
made under any one of the following circumstances: (a) pending investment
proceeds of sale of Fund shares or of portfolio securities; (b) pending
settlement of purchases of portfolio securities; and (c) to maintain liquidity
for the purpose of meeting anticipated redemptions. Only those non-New York
tax-exempt securities which satisfy the standards established for New York
tax-exempt securities may be purchased by the Fund. The types of taxable money
market instruments in which the Fund may invest are limited to the following
short-term fixed-income securities (maturing in one year or less from the time
of purchase): (i) obligations of the United States Government, its agencies,
instrumentalities or authorities; (ii) commercial paper rated P-1 by Moody's
Investors Services, Inc. ("Moody's") or A-1 by Standard & Poor's Corporation
("S&P"); (iii) certificates of deposit of domestic banks with assets of $1
billion or more; and (iv) repurchase agreements with respect to portfolio
securities. In addition, the Fund may temporarily invest more than 20% of its
total assets in taxable money market instruments to maintain a "defensive"
posture when, in the opinion of the Investment Manager, it is advisable to do so
because of market conditions.
 
    TAX-EXEMPT SECURITIES.  As discussed in the Prospectus, at least 80% of the
Fund's total assets will be invested in Municipal Obligations and at least 65%
of the Fund's total assets will be invested in New York Municipal Obligations
(New York Municipal Bonds, New York Municipal Notes and New York
 
                                       12
<PAGE>
Municipal Commercial Paper). Such New York Municipal Obligations are exempt from
federal, New York State and New York City income tax except to those investors
who are subject to the alternative minimum tax. Up to 35% of the Trust's total
assets may be invested in Municipal Obligations other than New York Municipal
Obligations. Such Municipal Obligations are exempt from federal income tax (but
not New York State and New York City income taxes) except to those investors who
are subject to the alternative minimum tax. The Trust may temporarily invest
more than 35% of its total assets in non-New York Municipal Obligations in order
to maintain a defensive posture when, in the opinion of the Investment Manager,
prevailing market or financial conditions so warrant. In regard to the Moody's
and S&P ratings discussed in the Prospectus, it should be noted that the ratings
represent the organizations' opinions as to the quality of the securities which
they undertake to rate and the ratings are general and not absolute standards of
quality. For a description of Municipal Bond, Municipal Note and Municipal
Commercial Paper ratings by Moody's and S&P, see the Appendix to this Statement
of Additional Information.
 
    The percentage and rating limitations discussed above and in the Prospectus
apply at the time of acquisition of a security based upon the last previous
determination of the Fund's net asset value; any subsequent change in any
ratings by a rating service or change in percentages resulting from market
fluctuations or other changes in total assets will not require elimination of
any security from the Fund's portfolio.
 
    The payment of principal and interest by issuers of certain Municipal
Obligations purchased by the Fund may be guaranteed by letters of credit or
other credit facilities offered by banks or other financial institutions. Such
guarantees will be considered in determining whether a Municipal Obligation
meets the Fund's investment quality requirements. In addition, some issues may
contain provisions which permit the Fund to demand from the issuer repayment of
principal at some specified period(s) prior to maturity.
 
    MUNICIPAL BONDS.  Municipal Bonds, as referred to in the Prospectus, are
debt obligations of a state, its cities, municipalities and municipal agencies
(all of which are generally referred to as "municipalities") which generally
have a maturity at the time of issue of one year or more, and the interest from
which is, in the opinion of bond counsel, exempt from federal income tax. In
addition to these requirements, the interest from New York Municipal Bonds must
be, in the opinion of bond counsel, exempt from New York personal income tax.
They are issued to raise funds for various public purposes, such as construction
of a wide range of public facilities, to refund outstanding obligations and to
obtain funds for general operating expenses or to loan to other public
institutions and facilities. In addition, certain types of industrial
development bonds and pollution control bonds are issued by or on behalf of
public authorities to provide funding for various privately operated facilities.
 
    MUNICIPAL NOTES.  Municipal Notes are short-term obligations of
municipalities, generally with a maturity at the time of issuance ranging from
six months to three years, the interest from which is, in the opinion of bond
counsel, exempt from federal income tax. In addition to those requirements, the
interest from New York Municipal Notes must be, in the opinion of bond counsel,
exempt from New York personal income tax. The principal types of Municipal Notes
include tax anticipation notes, bond anticipation notes, revenue anticipation
notes and project notes, although there are other types of Municipal Notes in
which the Fund may invest. Notes sold in anticipation of collection of taxes, a
bond sale or receipt of other revenues are usually general obligations of the
issuing municipality or agency. Project Notes are issued by local agencies and
are guaranteed by the United States Department of Housing and Urban Development.
Such notes are secured by the full faith and credit of the United States
Government.
 
    MUNICIPAL COMMERCIAL PAPER.  Municipal Commercial Paper refers to short-term
obligations of municipalities the interest from which is, in the opinion of bond
counsel, exempt from federal income tax. In addition to those requirements, the
interest from New York Commercial Paper must be, in the opinion of bond counsel,
exempt from New York personal income tax. It may be issued at a discount and is
sometimes referred to as Short-Term Discount Notes. Municipal Commercial Paper
is likely to be used to meet seasonal working capital needs of a municipality or
interim construction financing and general
 
                                       13
<PAGE>
revenues of the municipality or refinanced with long-term debt. In most cases
Municipal Commercial Paper is backed by letters of credit, lending agreements,
note repurchase agreements or other credit facility agreements offered by banks
or other institutions.
 
    The two principal classifications of Municipal Bonds, Notes and Commercial
Paper are "general obligation" and "revenue" bonds, notes or commercial paper.
General obligation bonds, notes or commercial paper are secured by the issuer's
pledge of its faith, credit and taxing power for the payment of principal and
interest. Issuers of general obligation bonds, notes or commercial paper include
a state, its counties, cities, towns and other governmental units. Revenue
bonds, notes or commercial paper are payable from the revenues derived from a
particular facility or class of facilities or, in some cases, from specific
revenue sources. Revenue bonds, notes or commercial paper are issued for a wide
variety of purposes, including the financing of electric, gas, water and sewer
systems and other public utilities; industrial development and pollution control
facilities; single and multi-family housing units; public buildings and
facilities; air and marine ports; transportation facilities such as toll roads,
bridges and tunnels; and health and educational facilities such as hospitals and
dormitories. They rely primarily on user fees to pay debt service, although the
principal revenue source is often supplemented by additional security features
which are intended to enhance the creditworthiness of the issuer's obligations.
In some cases, particularly with respect to revenue bonds issued to finance
housing and public buildings, a direct or implied "moral obligation" of a
governmental unit may be pledged to the payment of debt service. In other cases,
a special tax or other charge may augment user fees.
 
    Issuers of these obligations are subject to the provisions of bankruptcy,
insolvency and other laws affecting the rights and remedies of creditors, such
as the Federal Bankruptcy Act, and laws, if any, which may be enacted by
Congress or any state extending the time for payment of principal or interest,
or both, or imposing other constraints upon enforcement of such obligations or
upon municipalities to levy taxes. There is also the possibility that as a
result of litigation or other conditions the power or ability of any one or more
issuers to pay, when due, principal of and interest on its, or their, Municipal
Bonds, Municipal Notes and Municipal Commercial Paper may be materially
affected.
 
PORTFOLIO MANAGEMENT
 
    VARIABLE RATE AND FLOATING RATE OBLIGATIONS.  As stated in the Prospectus,
the Fund may invest in Municipal Bonds and Municipal Notes ("Municipal
Obligations") of the type called variable rate and floating rate obligations.
The interest rate payable on a variable rate obligation is adjusted either at
predesignated periodic intervals and, on a floating rate obligation, whenever
there is a change in the market rate of interest on which the interest rate
payable is based. Other features may include the right whereby the Fund may
demand prepayment of the principal amount of the obligation prior to its stated
maturity (a "demand feature") and the right of the issuer to prepay the
principal amount prior to maturity. The principal benefit of a variable rate
obligation is that the interest rate adjustment minimizes changes in the market
value of the obligation. As a result, the purchase of variable rate and floating
rate obligations should enhance the ability of the Fund to maintain a stable net
asset value per share (see "How Net Asset Value is Determined") and to sell
obligations prior to maturity at a price that is approximately the full
principal amount of the obligations. The principal benefit to the Fund of
purchasing obligations with a demand feature is that liquidity, and the ability
of the Fund to obtain repayment of the full principal amount of an obligation
prior to maturity, is enhanced. The payment of principal and interest by issuers
of certain obligations purchased by the Fund may be guaranteed by letters of
credit or other credit facilities offered by banks or other financial
institutions. Such guarantees will be considered in determining whether an
obligation meets the Fund's investment quality requirements.
 
    WHEN-ISSUED AND DELAYED DELIVERY SECURITIES.  As stated in the Prospectus,
the Fund may purchase tax-exempt securities on a when-issued or delayed delivery
basis. When such transactions are negotiated, the price is fixed at the time of
commitment, but delivery and payment can take place a month or more after the
date of the commitment. While the Fund will only purchase securities on a when-
issued or delayed delivery basis with the intention of acquiring the securities,
the Fund may sell the securities before the settlement date, if it is deemed
advisable. The securities so purchased or sold are
 
                                       14
<PAGE>
   
subject to market fluctuation and no interest accrues to the purchaser during
this period. At the time the Fund makes the commitment to purchase a Municipal
Obligation on a when-issued or delayed delivery basis, it will record the
transaction and thereafter reflect the value, each day, of the Municipal
Obligation in determining its net asset value. The Fund will also establish a
segregated account with its custodian bank in which it will maintain liquid
assets such as cash, U.S. government securities or other appropriate liquid
portfolio securities equal in value to commitments for such when-issued or
delayed delivery securities. During the fiscal year ended December 31, 1997, the
Fund's investments in when-issued and delayed delivery securities did not exceed
5% of its net assets.
    
 
    REPURCHASE AGREEMENTS.  When cash may be available for only a few days, it
may be invested by the Fund in repurchase agreements until such time as it may
otherwise be invested or used for payments of obligations of the Fund. These
agreements, which may be viewed as a type of secured lending by the Fund,
typically involve the acquisition by the Fund of debt securities from a selling
financial institution such as a bank, savings and loan association or
broker-dealer. The agreement provides that the Fund will sell back to the
institution, and that the institution will repurchase, the underlying security
("collateral"), which is held by the Fund's Custodian, at a specified price and
at a fixed time in the future, which is usually not more than seven days from
the date of purchase. The Fund will accrue interest from the institution until
the time when the repurchase is to occur. Although such date is deemed by the
Fund to be the maturity date of a repurchase agreement, the maturities of
securities subject to repurchase agreements are not subject to any limits and
may exceed one year.
 
   
    While repurchase agreements involve certain risks not associated with direct
investments in debt securities, the Fund follows procedures designed to minimize
such risks. These procedures include effecting repurchase transactions only with
large, well capitalized and well established financial institutions, whose
financial condition will be continually monitored. In addition, the value of the
collateral underlying the repurchase agreement will always be at least equal to
the resale price, which consists of the purchase price paid to the seller of the
securities plus the accrued resale premium which is defined as the amount
specified in the repurchase agreement or the daily amortization of the
difference between the purchase price and the resale price specified in the
repurchase agreement. Such collateral will consist entirely of securities that
are direct obligations of, or that are fully guaranteed as to principal and
interest by, the United States or any agency thereof, and/or certificates of
deposit, bankers' acceptances which are eligible for acceptance by a Federal
Reserve Bank, and, if the seller is a bank, mortgage related securities (as such
term is defined in section 3(a)(41) of the Securities Exchange Act of 1934)
that, at the time the repurchase agreement is entered into, are rated in the
highest rating category by the Requisite NRSROs. Additionally, the collateral
must qualify the repurchase agreement for preferential treatment under the
Federal Deposit Insurance Act or the Federal Bankruptcy Code. In the event of a
default or bankruptcy by a selling financial institution, the Fund will seek to
liquidate such collateral. However, the exercise of the Fund's right to
liquidate such collateral could involve certain costs or delays and, to the
extent that proceeds from any sale upon a default of the obligation to
repurchase were less than the repurchase price, the Fund could suffer a loss. It
is the current policy of the Fund not to invest in repurchase agreements that do
not mature within seven days if any such investment, together with any other
illiquid asset held by the Fund, amount to more than 10% of its net assets. The
Fund's investments in repurchase agreements may, at times, be substantial when,
in the view of the Investment Manager, liquidity or other considerations
warrant. During the fiscal year ended December 31, 1997, the Fund did not enter
into any repurchase agreements.
    
 
    PUT OPTIONS.  The Fund may purchase securities together with the right to
resell them to the seller at an agreed upon price or yield within a specified
period prior to the maturity date of such securities. Such a right to resell is
commonly known as a "put," and the aggregate price which the Fund pays for
securities with puts may be higher than the price which otherwise would be paid
for the securities. Consistent with the Fund's investment objectives and subject
to the supervision of the Board of Trustees, the primary purpose of this
practice is to permit the Fund to be fully invested in securities, the interest
on
 
                                       15
<PAGE>
which is exempt from Federal and New York personal income tax, while preserving
the necessary flexibility and liquidity to purchase securities on a when-issued
basis, to meet unusually large redemptions and to purchase at a later date
securities other than those subject to the put. The Fund's policy is, generally,
to exercise the puts on their expiration date, when the exercise price is higher
than the current market price for the related securities. Puts may be exercised
prior to the expiration date in order to fund obligations to purchase other
securities or to meet redemption requests. These obligations may arise during
periods in which proceeds from sales of Fund shares and from recent sales of
portfolio securities are insufficient to meet such obligations or when the funds
available are otherwise allocated for investment. In addition, puts may be
exercised prior to their expiration date in the event the Investment Manager
revises its evaluation of the creditworthiness of the issuer of the underlying
security. In determining whether to exercise puts prior to their expiration date
and in selecting which puts to exercise in such circumstances, the Investment
Manager considers, among other things, the amount of cash available to the Fund,
the expiration dates of the available puts, any future commitments for
securities purchases, the yield, quality and maturity dates of the underlying
securities, alternative investment opportunities and the desirability of
retaining the underlying securities in the Fund's portfolio.
 
   
    The Fund values securities which are subject to puts at their amortized cost
and values the put, apart from the security, at zero. Thus, the cost of the put
will be carried on the Fund's books as an unrealized loss from the date of
acquisition and will be reflected in realized gain or loss when the put is
exercised or expires. Since the value of the put is dependent on the ability of
the put writer to meet its obligation to repurchase, the Fund's policy is to
enter into put transactions only with municipal securities dealers who are
approved by the Fund's Board of Trustees. Each dealer will be approved on its
own merits and it is the Fund's general policy to enter into put transactions
only with those dealers which are determined to present minimal credit risks. In
connection with such determination, the Board of Trustees will review, among
other things, the ratings, if available, of equity and debt securities of such
municipal securities dealers, their reputations in the municipal securities
markets, the net worth of such dealers and their efficiency in consummating
transactions. Bank dealers normally will be members of the Federal Reserve
System, and other dealers will be members of the National Association of
Securities Dealers, Inc. or members of a national securities exchange. The Board
has directed the Investment Manager not to enter into put transactions with, and
to exercise outstanding puts of, any municipal securities dealer which, in the
judgment of the Investment Manager, ceases at any time to present a minimal
credit risk. In the event that a dealer should default on its obligation to
repurchase an underlying security, the Fund is unable to predict whether all or
any portion of any loss sustained could be subsequently recovered from such
dealer. The Fund may not invest more than 10% of its total assets in puts at any
given time. During the fiscal year ended December 31, 1997, the Fund did not
purchase any put options.
    
 
    It is the position of the staff of the Securities and Exchange Commission
that certain provisions of the Act may be deemed to prohibit the Fund from
purchasing puts from broker-dealers without an exemptive order. Until such an
order is obtained, the Fund will purchase puts only from commercial banks. There
is no assurance that such an order, if applied for, will be obtained. The
duration of puts, which will not exceed 60 days, will not be a factor in
determining the weighted average maturity of the Fund's portfolio securities.
 
    In Revenue Ruling 82-144, the Internal Revenue Service stated that, under
certain circumstances, a purchaser of tax-exempt obligations which are subject
to puts will be considered the owner of the obligations for Federal income tax
purposes. In connection therewith, the Fund has received an opinion of counsel
to the effect that interest on Municipal Obligations subject to puts will be
tax-exempt to the Fund.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    In addition to the investment restrictions enumerated in the Prospectus, the
investment restrictions listed below have been adopted by the Fund as
fundamental policies, except as otherwise indicated.
 
                                       16
<PAGE>
Under the Act, a fundamental policy may not be changed without the vote of the
holders of a majority of the outstanding voting securities of the Fund, as
defined in the Act. Such a majority is defined in the Act as the lesser of (a)
67% or more of the shares present at a Meeting of Shareholders of the Fund, if
the holders of more than 50% of the outstanding shares of the Fund are present
or represented by proxy at the meeting, or (b) more than 50% of the outstanding
shares of the Fund. For purposes of the following restrictions and those recited
in the Prospectus: (a) an "issuer" of a security is the entity whose assets and
revenues are committed to the payment of interest and principal on that
particular security, provided that the guarantee of a security will be
considered a separate security and provided further that a guarantee of a
security shall not be deemed a security issued by the guarantor if the value of
all securities guaranteed by the guarantor and owned by the Fund does not exceed
10% of the value of the total assets of the Fund; (b) a "taxable security" is
any security the interest on which is subject to federal income tax; and (c) all
percentage limitations apply immediately after a purchase or initial investment,
and any subsequent change in any applicable percentage resulting from market
fluctuations or other changes in total or net assets does not require
elimination of any security from the portfolio.
 
    The term "bank obligations" as referred to in Investment Restriction 3 in
the Prospectus refers to short-term obligations (including certificates of
deposit and bankers' acceptances) of banks subject to regulation by the U.S.
Government and having total assets of $1 billion or more, and instruments
secured by such obligations, not including obligations of foreign branches of
domestic banks.
 
    The Fund may not:
 
         1. Invest in common stock.
 
         2. Invest in securities of any issuer if, to the knowledge of the Fund,
    any officer or trustee of the Fund or any officer or director of the
    Investment Manager owns more than 1/2 of 1% of the outstanding securities of
    such issuer, and such officers, trustees and directors who own more than 1/2
    of 1% own in the aggregate more than 5% of the outstanding securities of
    such issuer.
 
         3. Purchase or sell real estate or interests therein, although it may
    purchase securities secured by real estate or interests therein.
 
         4. Purchase or sell commodities or commodity futures contracts.
 
         5. Purchase oil, gas or other mineral leases, rights or royalty
    contracts, or exploration or development programs.
 
         6. Write, purchase or sell puts, calls, or combinations thereof, except
    that it may acquire rights to resell Municipal Obligations at an agreed upon
    price and at or within an agreed upon time.
 
         7. Purchase securities of other investment companies, except in
    connection with a merger, consolidation, reorganization or acquisition of
    assets.
 
         8. Borrow money, except that the Fund may borrow from a bank for
    temporary or emergency purposes in amounts not exceeding 5% (taken at the
    lower of cost or current value) of the value of its total assets (not
    including the amount borrowed).
 
         9. Pledge its assets or assign or otherwise encumber them except to
    secure borrowings effected within the limitations set forth in restriction
    (8). To meet the requirements of regulations in certain states, the Fund, as
    a matter of operating policy but not as a fundamental policy, will limit any
    pledge of its assets to 10% of its net assets so long as shares of the Fund
    are being sold in those states.
 
        10. Issue senior securities as defined in the Act except insofar as the
    Fund may be deemed to have issued a senior security by reason of: (a)
    purchasing any securities on a when-issued or delayed delivery basis; or (b)
    borrowing money in accordance with restrictions described above.
 
        11. Make short sales of securities.
 
                                       17
<PAGE>
        12. Purchase securities on margin, except for such short-term loans as
    are necessary for the clearance of purchases of portfolio securities.
 
        13. Engage in the underwriting of securities, except insofar as the Fund
    may be deemed an underwriter under the Securities Act of 1933 in disposing
    of a portfolio security.
 
        14. Invest for the purpose of exercising control or management of any
    other issuer.
 
   
    Notwithstanding any other investment policy or restriction, the Fund may
seek to achieve its investment objectives by investing all or substantially all
of its assets in another investment company having substantially the same
investment objectives and policies as the Fund.
    
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
- --------------------------------------------------------------------------------
 
   
    Subject to the general supervision of the Board of Trustees, the Investment
Manager is responsible for decisions to buy and sell securities for the Fund,
the selection of brokers and dealers to effect the transactions, and the
negotiation of brokerage commissions, if any. The Fund expects that the primary
market for the securities in which it intends to invest will generally be the
over-the-counter market. Securities are generally traded in the over-the-counter
market on a "net" basis with dealers acting as principal for their own accounts
without a stated commission, although the price of the security usually includes
a profit to the dealer. The Fund also expects that securities will be purchased
at times in underwritten offerings where the price includes a fixed amount of
compensation, generally referred to as the underwriter's concession or discount.
On occasion the Fund may also purchase certain money market instruments directly
from an issuer, in which case no commissions or discounts are paid. During the
fiscal years ended December 31, 1995, December 31, 1996 and December 31, 1997,
the Fund paid no such brokerage commissions or concessions.
    
 
   
    The Investment Manager currently serves as investment manager to a number of
clients, including other investment companies, and may in the future act as
investment manager or adviser to others. It is the practice of the Investment
Manager to cause purchase and sale transactions to be allocated among the Fund
and others whose assets it manages in such manner as it deems equitable. In
making such allocations among the Fund and other client accounts, various
factors are considered, including the respective investment objectives, the
relative size of portfolio holdings of the same or comparable securities, the
availability of cash for investment, the size of investment commitments
generally held and the opinions of the persons responsible for managing the
portfolios of the Fund and other client accounts. In the case of certain initial
and secondary public offerings, the Investment Manager may utilize a pro rata
allocation process based on the size of the Dean Witter Funds involved and the
number of shares available from the public offering.
    
 
    The policy of the Fund, regarding purchases and sales of securities for its
portfolio, is that primary consideration be given to obtaining the most
favorable prices and efficient execution of transactions. In seeking to
implement the Fund's policies, the Investment Manager effects transactions with
those brokers and dealers who the Investment Manager believes provide the most
favorable prices and are capable of providing efficient executions. If the
Investment Manager believes such price and executions are obtainable from more
than one broker or dealer, it may give consideration to placing portfolio
transactions with those brokers and dealers who also furnish research and other
services to the Fund or the Investment Manager. Such services may include, but
are not limited to, any one or more of the following: information as to the
availability of securities for purchase or sale; statistical or factual
information or opinions pertaining to investment; wire services; and appraisals
or evaluations of portfolio securities.
 
    The information and services received by the Investment Manager from brokers
and dealers may be of benefit to the Investment Manager in the management of
accounts of some of its other clients and may not in all cases benefit the Fund
directly. While the receipt of such information and services is useful in
varying degrees and would generally reduce the amount of research or services
otherwise performed by
 
                                       18
<PAGE>
the Investment Manager and thereby reduce its expenses, it is of indeterminable
value and the Fund does not reduce the management fee it pays to the Investment
Manager by any amount that may be attributable to the value of such services.
 
   
    Pursuant to an order of the Securities and Exchange Commission, the Fund may
effect principal transactions in certain money market instruments with DWR. The
Fund will limit its transactions with DWR to U.S. Government and Government
Agency Securities, Bank Money Instruments (i.e. Certificates of Deposit and
Bankers' Acceptances) and Commercial Paper (not including Tax-Exempt Municipal
Paper). Such transactions will be effected with DWR only when the price
available from DWR is better than that available from other dealers. During the
fiscal years ended December 31, 1995, 1996 and 1997, the Fund did not effect any
principal transactions with DWR.
    
 
   
    Consistent with the policy described above, brokerage transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through DWR, Morgan Stanley & Co. Incorporated and other brokers and
dealers that are affiliates of the Investment Manager. In order for an
affiliated broker or dealer to effect portfolio transactions for the Fund, the
commissions, fees or other remuneration received by the affiliated broker or
dealer must be reasonable and fair compared to the commissions, fees or other
remuneration paid to other brokers in connection with comparable transactions
involving similar securities being purchased or sold on an exchange during a
comparable period of time. This standard would allow the affiliated broker or
dealer to receive no more than the remuneration which would be expected to be
received by an unaffiliated broker in a commensurate arm's-length transaction.
Furthermore, the Trustees of the Fund, including a majority of the Trustees who
are not "interested" Trustees (as defined in the Act), have adopted procedures
which are reasonably designed to provide that any commissions, fees or other
remuneration paid to an affiliated broker or dealer are consistent with the
foregoing standard. During the fiscal years ended December 31, 1995, 1996, and
1997, the Fund paid no brokerage commissions to an affiliated broker or dealer.
    
 
    Subject to the principle of obtaining best price and execution, the
Investment Manager may consider a broker-dealer's sales of shares of the Fund as
a factor in selecting from among those broker-dealers qualified to provide
comparable prices and execution on the Fund's portfolio transactions. The Fund
does not, however, require a broker-dealer to sell shares of the Fund in order
for it to be considered to execute portfolio transactions, and will not enter
into any arrangement whereby a specific amount or percentage of the Fund's
transactions will be directed to a broker which sells shares of the Fund to
customers. The Board of Trustees reviews, periodically, the allocation of
brokerage orders to monitor the operation of these policies.
 
    Portfolio turnover rate is defined as the lesser of the value of the
securities purchased or securities sold, excluding all securities whose
maturities at time of acquisition were one year or less, divided by the average
monthly value of such securities owned during the year. Because the Fund's
portfolio consists of municipal obligations maturing within one year, the Fund
is unable to calculate its turnover rate as so defined. However, because of the
short-term nature of the Fund's portfolio securities, it is anticipated that the
number of purchases and sales of maturities of such securities will be
substantial. Brokerage commissions are not normally charged on purchases and
sales of short-term municipal obligations, but such transactions may involve
transaction costs in the form of spreads between bid and asked prices.
 
   
SPECIAL CONSIDERATIONS RELATING TO NEW YORK TAX-EXEMPT SECURITIES
    
 
    During the mid-1970's, New York State (the "State"), some of its agencies,
instrumentalities and public benefit corporations (the "Authorities"), and
certain of its municipalities faced serious financial difficulties. To address
many of these financial problems, the State developed various programs, many of
which were successful in ameliorating the financial crisis. Any further
financial problems experienced by these Authorities or municipalities could have
a direct adverse effect on the New York Municipal Obligations in which the Fund
invests.
 
                                       19
<PAGE>
NEW YORK CITY
 
   
    GENERAL.  The national economic downturn which began in July 1990 adversely
affected the local economy, which had been declining since late 1989. As a
result, New York City (the "City") experienced job losses in 1990 and 1991 and
real Gross City Product (GCP) fell in those two years. For the 1992 fiscal year,
the City closed a projected budget gap of $3.3 billion in order to achieve a
balanced budget as required by the laws of the State. Beginning in 1992, the
improvement in the national economy helped stabilize conditions in the City.
Employment losses moderated toward year-end and real GCP increased, boosted by
strong wage gains. After noticeable improvements in the City's economy during
calendar year 1994, economic growth slowed in 1995 and thereafter improved
commencing in calendar year 1996, reflecting improved securities industry
earnings and employment in other sectors. The City's current four-year financial
plan assumes that moderate economic growth will exist through calendar year
2001, with moderate job growth and wage increases.
    
 
   
    For each of the 1981 through 1996 fiscal years, the City achieved balanced
operating results as reported in accordance with then applicable generally
accepted accounting principles ("GAAP"). The City has been required to close
substantial gaps between forecast revenues and forecast expenditures in order to
maintain balanced operating results. There can be no assurance that the City
will continue to maintain balanced operating results as required by State law
without additional tax or other revenue increases or additional reductions in
City services or entitlement programs, which could adversely affect the City's
economic base.
    
 
   
    1998-2001 NEW YORK CITY FINANCIAL PLAN.  The Mayor is responsible for
preparing the City's four-year financial plan including the current financial
plan for the 1998 through 2001 fiscal years (the "1998-2001 Financial Plan", the
"Financial Plan" or "City Plan").
    
 
   
    The most recent quarterly modification to the City's financial plan for the
1997 fiscal year projects a budget in accordance with GAAP for the 1997 fiscal
year, after taking into account an increase in projected tax revenues of $1.2
billion during the 1997 fiscal year and a discretionary prepayment in the 1997
fiscal year of $1.3 billion of debt service due in the 1998 and 1999 fiscal
years. The Financial Plan projects revenues and expenditures for the 1998 fiscal
year balanced in accordance with GAAP. The Financial Plan includes: increased
tax revenue projections; reduced debt service costs; the assumed restoration of
Federal funding for programs assisting certain legal aliens; additional
expenditure for textbooks, computers, improved education programs and welfare
reform, law enforcement, immigrant naturalization, initiatives proposed by the
City Council and other initiatives; and a proposed discretionary transfer to the
1998 fiscal year of $300 million of debt service due in the 1999 fiscal year for
budget stabilization purposes. In addition, the Financial Plan reflects the
discretionary transfer to the 1997 fiscal year of $1.3 billion of debt service
due in the 1998 and 1999 fiscal years, and includes actions to eliminate a
previously projected budget gap for the 1998 fiscal year. These gap closing
actions include (i) additional agency actions totaling $621 billion; (ii) the
proposed sale of various assets; (iii) additional State aid of $294 million,
including a proposal that the State accelerate a $142 million revenue sharing
payment to the City from March 1999; and (iv) entitlement savings of $128
million which would result from certain of the reductions in Medicaid spending
proposed in the Governor's 1997-1998 Executive Budget and the State making
available to the City $77 million of additional Federal block grant aid, as
proposed in the Governor's 1997-1998 Executive Budget. The Financial Plan also
sets forth projections for the 1999 through 2001 fiscal years and projects gaps
of $1.8 billion, $2.8 billion and $2.6 billion for the 1999 through 2001 fiscal
years, respectively.
    
 
   
    The Financial Plan assumes approval by the State Legislature and the
Governor of a tax reduction program proposed by the City and a proposed State
tax relief program. The Financial Plan also assumes (i) approval by the governor
and the State Legislature of the extension of the 14% personal income tax
surcharge, which is scheduled to expire on December 31, 1999, and of the
extension of the 12.5% personal income tax surcharge, which is scheduled to
expire on December 31, 1998; (ii) collection of the projected rent payments for
the City's airports; and (iii) State approval of the cost containment
initiatives and State aid proposed by the City for the 1998 fiscal year, and
$115 million in State aid which is
    
 
                                       20
<PAGE>
   
assumed in the Financial Plan but was not provided for in the Governor's
1997-1998 Executive budget. The Financial Plan reflects the increased costs
which the City is prepared to incur as a result of welfare legislation recently
enacted by Congress. In addition, the economic and financial condition of the
City may be affected by various financial, social, economic and political
factors which could have a material effect on the City.
    
 
   
    The City's financial plans have been the subject of extensive public
comment. On September 11, 1997, the New York State Comptroller issued a report
which noted that the ability to deal with future budget gaps could become a
significant issue in the State's 2000-2001 fiscal year, when the cost of tax
cuts increases by $1.9 billion. The report contained projections that, based on
current economy conditions and current law for taxes and spending, showed a gap
of $5.6 billion in the 2000-2001 State fiscal year and of $7.4 billion in the
2001-2002 State fiscal year. The report noted that these gaps would be smaller
if recurring spending reductions produce savings in earlier years. The State
Comptroller also stated that if Wall Street earnings moderate and the State
experiences a moderate recession, the gap for the 2001-2002 State fiscal year
could grow to nearly $12 billion.
    
 
   
    The City depends on the State for State aid both to enable the City to
balance its budget and to meet its cash requirements. There can be no assurance
that there will not be reductions in State aid to the City from amounts
currently projected; that the State budgets will be adopted by the April 1
statutory deadline or interim appropriations enacted; or that any such
reductions or delays will not have adverse effects on the City's cash flow or
expenditures.
    
 
   
    The City's projections set forth in the City Plan are based on various
assumptions and contingencies which are uncertain and which may not materialize.
Changes in major assumptions could significantly affect the City's ability to
balance its budget as required by State law and to meet its annual cash flow and
financing requirements. Such assumptions and contingencies include: the
condition of the regional and local economies, the impact on real estate tax
revenues of the real estate market, wage increases for City employees consistent
with those assumed in the Financial Plan, employment growth, the ability to
implement proposed reductions in City personnel and other cost reduction
initiatives, the ability of the New York City Health and Hospitals Corporations
and the Board of Education to take actions to offset potential budget
shortfalls, the ability to complete revenue generating transactions, provision
of State and Federal aid and mandate relief and the impact on City revenues and
expenditures of proposals for Federal and State welfare reform and any future
legislation affecting Medicare or other entitlement.
    
 
   
    Implementation of the Financial Plan is also dependent upon the City's
ability to market its securities successfully. The City's financing program for
fiscal years 1998 through 2001 contemplates the issuance of $4.9 billion of
general obligation bonds and $7.1 billion of bonds to be issued by the New York
City Transitional Finance Authority (the "Finance Authority") to finance City
capital projects. The Finance Authority was created as part of the City's effort
to assist in keeping the City's indebtedness within the forecast level of the
constitutional restrictions on the amount of debt the City is authorized to
incur. In addition, the City issues revenue and tax anticipation notes to
finance its seasonal working capital requirements. The success of projected
public sales of City bonds and notes, New York City Municipal Water Finance
Authority ("Water Authority") bonds and Finance Authority bonds will be subject
to prevailing market conditions. The City's planned capital and operating
expenditures are dependent upon the sale of its general obligation bonds and
notes, and the Water Authority and Finance Authority bonds. Future developments
concerning the City and public discussion of such developments, as well as
prevailing market conditions, may affect the market for outstanding City general
obligation bonds and notes.
    
 
   
    The City Comptroller and other agencies and public officials have issued
reports and made public statements which, among other things, state that
projected revenues and expenditures may be different from those forecasted in
the City Plan. It is reasonable to expect that such reports and statements will
continue to be issued and engender public comment.
    
 
   
    RATINGS.  On July 10, 1995, S&P revised downward its rating on City general
obligation bonds from A- to BBB+ and removed City bonds from CreditWatch. Fitch
Investors Service, Inc. ("Fitch") continues
    
 
                                       21
<PAGE>
   
to rate the City general obligation Bonds A-. On February 28, 1996, Fitch placed
the City's general obligation bonds on FitchAlert with negative implications.
Moody's rating for City general obligation bonds is Baa1. On July 17, 1997,
Moody's changed its outlook on City bonds to positive from stable. Such ratings
reflect only the views of these rating agencies, from which an explanation of
the significance of such ratings may be obtained. There is no assurance that
such ratings will continue for any given period of time or that they will not be
revised downward or withdrawn entirely. Any such downward revision or withdrawal
could have an adverse effect on the market prices of bonds.
    
 
   
    OUTSTANDING INDEBTEDNESS.  As of September 30, 1997, the City and the
Municipal Assistance Corporation for the City of New York had, respectively,
approximately $26.180 billion and $3.717 billion of outstanding net long-term
debt.
    
 
    LITIGATION.  The City is a defendant in lawsuits pertaining to material
matters, including claims asserted which are incidental to performing routine
governmental and other functions. This litigation includes, but is not limited
to, actions commenced and claims asserted against the City arising out of
alleged torts, alleged breaches of contracts, alleged violations of law and
condemnation proceedings. As of June 30, 1996 and 1995, claims in excess of $380
billion and $311 billion, respectively, were outstanding against the City for
which the City estimates its potential future liability to be $2.8 billion and
$2.5 billion, respectively.
 
NEW YORK STATE
 
   
    RECENT DEVELOPMENTS.  The national economy has resumed a more robust rate of
growth after a "soft landing" in 1995, with over 14 million jobs added
nationally since early 1992. The State economy has continued to expand, but
growth remains somewhat slower than in the nation. Although the State has added
approximately 300,000 jobs since late 1992, employment growth in the State has
been hindered during recent years by significant cutbacks in the computer and
instrument manufacturing, utility, defense and banking industries. Government
downsizing has also moderated these job gains.
    
 
   
    The 1997-1998 New York State Financial Plan (the "State Plan") is partly
based on the forecast that the State's economy shows moderate expansion during
the first half of calendar 1997 with the trend continuing through the year.
Although industries that export goods and services are expected to continue to
do well, growth is expected to be moderated by tight fiscal constraints on the
health care and social services industries. On an average annual basis,
employment growth in the State is expected to be up substantially from the 1996
rate. Personal income is expected to record moderate gains in 1997. Bonus
payments in the securities industry are expected to increase further from last
year's record level.
    
 
    The State Plan is based upon forecasts of national and State economic
activity developed through both internal analysis and review of State and
national economic forecasts prepared by commercial forecasting services and
other public and private forecasters. Economic forecasts have frequently failed
to predict accurately the timing and magnitude of changes in the national and
the State economies. Many uncertainties exist in forecasts of both the national
and State economies, including consumer attitudes toward spending, the extent of
corporate and governmental restructuring, federal fiscal and monetary policies,
the level of interest rates, and the condition of the world economy, which could
have an adverse effect on the State. There can be no assurance that the State
economy will not experience results in the current fiscal year that are worse
than predicted, with corresponding material and adverse effects on the State's
projections of receipts and disbursements.
 
   
    THE 1997-98 FISCAL YEAR.  The State's General Fund (the major operating fund
of the State) was projected in the State Plan to be balanced on a cash basis for
the 1997-98 fiscal year. Total receipts and transfers from other funds are
projected at $35.09 billion, an increase of $2.05 billion from the prior fiscal
year, and disbursements and transfers to other funds are projected to be $34.60
billion, an increase of $1.70 billion from the total disbursed in the prior
fiscal year.
    
 
    NEW YORK LOCAL GOVERNMENT ASSISTANCE CORPORATION.  In 1990, as part of a
state fiscal reform program, legislation was enacted creating the New York Loan
Government Assistance Corporation ("LGAC"), a public benefit corporation
empowered to issue long-term obligations to fund certain
 
                                       22
<PAGE>
   
payments to local governments traditionally funded through the State's annual
seasonal borrowing. The legislation empowered LGAC to issue bonds and notes in
an amount not in excess of $4.7 billion (exclusive of certain refunding bonds).
Over a period of years, the issuance of those long-term obligations, which will
be amortized over no more than 30 years, is expected to result in eliminating
the need for continuing short-term seasonal borrowing. The legislation also
imposed a cap on the annual seasonal borrowing of the State at $4.7 billion,
less net proceeds of bonds issued by LGAC, except in cases where the Governor
and the legislative leaders have certified both the need for additional
borrowing and provided a schedule for reducing it to the cap. If borrowing above
the cap is thus permitted in any fiscal year, it is required by law to be
reduced to the cap by the fourth fiscal year after the limit was first exceeded.
    
 
   
    As of June 30, 1995, LGAC has issued bonds and notes to provide net proceeds
of $4.7 billion completing the program. The impact of this borrowing, together
with the availability of certain cash reserves is that, for the first time in
nearly 35 years, the State is able to meet its cash flow needs throughout the
fiscal year without relying on short-term seasonal borrowings.
    
 
    COMPOSITION OF STATE GOVERNMENTAL FUNDS GROUP.  Substantially all State
non-pension financial operations are accounted for in the State's governmental
funds group. Governmental funds include: (i) the General Fund, which receives
all income not required by law to be deposited in another fund; (ii) Special
Revenue Funds, which receive the preponderance of moneys received by the State
from the Federal government and other income the use of which is legally
restricted to certain purposes; (iii) Capital Projects Funds, used to finance
the acquisition, construction and rehabilitation of major capital facilities by
the State and to aid in certain of such projects conducted by local governments
or public authorities; and (iv) Debt Service Funds, which are used for the
accumulation of moneys for the payment of principal of and interest on long-term
debt and to meet lease-purchase and other contractual-obligation commitments.
 
   
    AUTHORITIES.  The fiscal stability of the State is related to the fiscal
stability of its public authorities (i.e. public benefit corporations, created
pursuant to State law, other than local authorities), which generally have
responsibility for financing, constructing and operating revenue-producing
public benefit facilities. The State's public authorities (the "Authorities")
are not subject to the constitutional restrictions on the incurrence of debt
which apply to the State itself, and may issue bonds and notes within the
amounts of, and as otherwise restricted by, their legislative authorization. As
of September 30, 1995, there were 17 Authorities that had outstanding debt of
$100 million or more and the aggregate outstanding debt, including refunding
bonds, of these 17 Authorities was $75.4 billion, only a portion of which
constitutes State-supported or State-related debt.
    
 
    Authorities are generally supported by revenues generated by the projects
financed or operated, such as fares, user fees on bridges or tunnels, highway
tolls and rentals for dormitory rooms and housing units and charges for
occupancy at medical care facilities. In addition, State legislation authorizes
several financing techniques for Authorities. Also, there are statutory
arrangements providing for State local assistance payments otherwise payable to
localities to be made under certain circumstances to Authorities. Although the
State has no obligation to provide additional assistance to localities whose
local assistance payments have been paid to Authorities under these
arrangements, if local assistance payments are diverted the affected localities
could seek additional State assistance. Some Authorities also receive moneys
from State appropriations to pay for the operating costs of certain of their
programs.
 
   
    RATINGS.  On January 13, 1992, S&P reduced its ratings on the State's
general obligation bonds from A to A- and, in addition, reduced its ratings on
the State's moral obligation, lease purchase, guaranteed and contractual
obligation debt. S&P also continued its negative rating outlook assessment on
State general obligation debt. On April 26, 1993, S&P revised the rating outlook
assessment to stable. On February 14, 1994, S&P raised is outlook to positive
and, on August 5, 1996, confirmed its A- rating. On August 28, 1997, S&P revised
its ratings on the State's general obligation bonds from A- to A and, in
addition, revised its ratings on the State's moral obligation, lease purchase,
guaranteed and contractual
    
 
                                       23
<PAGE>
   
obligation debt. On January 6, 1992, Moody's Investors Service reduced its
ratings on outstanding limited-liability State lease purchase and contractual
obligations from A to Baa1. On July 26, 1996, Moody's Investors Service
reconfirmed its A rating on the State's general obligation long-term
indebtedness. On February 10, 1997, Moody's confirmed its A2 rating on the
State's general obligation long-term indebtedness. Ratings reflect only the
respective views of such organizations, and an explanation of the significance
of such ratings must be obtained from the rating agency furnishing the same.
There is no assurance that a particular rating will continue for any given
period of time or that any such rating will not be revised downward or withdrawn
entirely if, in the judgment of the agency originally establishing the rating,
circumstances so warrant. A downward revision or withdrawal of such ratings, or
either of them, may have an effect on the market price of the State Municipal
Securities in which the New York Fund invests.
    
 
   
    GENERAL OBLIGATION DEBT.  As of March 31, 1997, the State had outstanding
approximately $5.03 billion in general obligation bonds, including $294 million
in bond anticipation notes outstanding. Principal and interest due on general
obligation bonds and interest due on bond anticipation notes were $749.6 million
for the 1996-97 fiscal years, and are estimated to be $720.9 million for the
State's 1997-98 fiscal year.
    
 
   
    LITIGATION.  The State is a defendant in numerous legal proceedings
pertaining to matters incidental to the performance of routine governmental
operations. Such litigation includes, but is not limited to, claims asserted
against the State arising from alleged torts, alleged breaches of contracts,
condemnation proceedings and other alleged violations of State and Federal laws.
These proceedings could affect adversely the financial condition of the State in
the 1997-1998 Fiscal Year or thereafter.
    
 
   
    The State believes that the 1997-1998 State Financial Plan includes
sufficient reserves for the payment of judgments that may be required during the
1996-1997 fiscal year. There can be no assurance, however, that an adverse
decision in any of these proceedings would not exceed the amount of all
potential State Plan reserves available for the payment of judgements and,
therefore, could affect the ability of the State to maintain a balanced
1997-1998 State Plan. The General Purpose Financial Statements for the 1996-1997
fiscal year report estimated probable awarded and anticipated unfavorable
judgements of $364 million, of which $134 million is expected to be paid during
the 1997-1998 fiscal year.
    
 
   
    In addition, the State is party to other claims and litigation which its
counsel has advised are not probable of adverse court decisions. Although the
amounts of potential losses, if any, are not presently determinable, it is the
State's opinion that its ultimate liability in these cases is not expected to
have a material adverse effect on the State's financial position in the
1997-1998 fiscal year or thereafter.
    
 
   
    OTHER LOCALITIES.  Certain localities in addition to the City could have
financial problems leading to requests for additional State assistance during
the State's 1997-98 fiscal year and thereafter. The potential impact on the
State of such actions by localities is not included in the projections of the
State receipts and disbursements in the State's 1997-98 fiscal year.
    
 
    For example, fiscal difficulties experienced by the City of Yonkers
("Yonkers") resulted in the creation of the Financial Control Board for the City
of Yonkers (the "Yonkers Board") by the State in 1984. The Yonkers Board is
charged with oversight of the fiscal affairs of Yonkers. Future actions taken by
the Governor or the State Legislature to assist Yonkers could result in
increased state expenditures for extraordinary local assistance.
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, the Fund offers its shares for sale to the
public on a continuous basis, without a sales charge. Pursuant to a Distribution
Agreement between the Fund and Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Manager and a wholly-owned
subsidiary of MSDWD, shares of the Fund are distributed by the Distributor and
through certain selected broker-dealers who have entered into agreements with
the Distributor ("Selected Broker-Dealer") at an offering
    
 
                                       24
<PAGE>
    DIRECT INVESTMENTS THROUGH TRANSFER AGENT.  A shareholder may make
additional investments in Fund shares at any time through the Shareholder
Investment Account by sending a check payable to Dean Witter New York Municipal
Money Market Trust in any amount, not less than $100, directly to the Transfer
Agent. The shares so purchased will be credited to the Shareholder Investment
Account.
 
    ACCOUNT STATEMENTS.  All purchases of Fund shares will be credited to the
shareholder in a Shareholder Investment Account maintained for the shareholder
by the Transfer Agent in full and fractional price equal to the net asset value
per share next determined following receipt of an effective purchase order
(accompanied by Federal Funds). Dealers in the securities markets in which the
Fund will invest usually require immediate payment in federal funds. Since the
payment by a Fund shareholder for his or her other shares cannot be invested
until it is converted into and available to the Fund in federal funds, the Fund
requires such payments to be so available before a share purchase order can be
considered effective. All checks submitted for payment are accepted subject to
collection at full face value in United States funds and must be drawn in United
States dollars on a United States bank.
 
   
    The Board of Trustees of the Fund, including a majority of the Trustees who
are not and were not at the time of their vote "Interested persons" (as defined
in the Act) of either party to the Distribution Agreement (the "Independent
Trustees"), approved, at its meeting held on April 24, 1997, the current
Distribution Agreement appointing the Distributor exclusive distributor of the
Fund's shares and providing for the Distributor to bear distribution expenses
not borne by the Fund. By its terms, the Distribution Agreement has an initial
term ending April 30, 1998, and will remain in effect from year to year
thereafter if approved by the Board. The current Distribution Agreement took
effect on May 31, 1997 upon the consummation of the merger of Dean Witter,
Discover & Co. with Morgan Stanley Group Inc. and is substantially identical to
the Fund's prior Distribution Agreement except for its dates of effectiveness
and termination.
    
 
SHAREHOLDER INVESTMENT ACCOUNT
 
   
    Upon the purchase of shares of the Fund, a Shareholder Investment Account is
opened for the investor on the books of the Fund, maintained by the Fund's
Transfer Agent, Dean Witter Trust FSB (the "Transfer Agent"). This is an open
account in which shares owned by the investor are credited by the Transfer Agent
in lieu of issuance of a share certificate. If a share certificate is desired,
it must be requested in writing for each transaction. Certificates are issued
only for full shares and may be redeposited in the account at any time. There is
no charge to the investor for issuance of a certificate. Whenever a
shareholder-instituted transaction takes place in the Shareholder Investment
Account directly through the Transfer Agent, the shareholder will be mailed a
written confirmation of such transaction.
    
 
    DIRECT INVESTMENTS THROUGH TRANSFER AGENT.  A shareholder may make
additional investments in Fund shares at any time through the Shareholder
Investment Account by sending a check payable to Dean Witter New York Municipal
Money Market Trust in any amount, not less than $100, directly to the Transfer
Agent. The shares so purchased will be credited to the Shareholder Investment
Account.
 
    ACCOUNT STATEMENTS.  All purchases of Fund shares will be credited to the
shareholder in a Shareholder Investment Account maintained for the shareholder
by the Transfer Agent in full and fractional shares of the Fund (rounded to the
nearest 1/100 of a share with the exception of purchases made through
reinvestment of dividends, which are rounded to the last 1/100 of a share). A
statement of the account will be mailed to the shareholder after each purchase
or redemption transaction effected through the Transfer Agent. A quarterly
statement of the account is sent to all shareholders. Share certificates will
not be issued unless requested in writing by the shareholder. No certificates
will be issued for fractional shares or to shareholders who have elected the
checking account or predesignated bank account methods of withdrawing cash from
their accounts.
 
   
    The Fund and the Distributor reserve the right to reject any order for the
purchase of shares of the Fund. In addition, the offering of Fund shares may be
suspended at any time and resumed at any time thereafter.
    
 
                                       25
<PAGE>
EXCHANGE PRIVILEGE
 
   
    As discussed in the Prospectus under the caption "Exchange Privilege," an
Exchange Privilege exists whereby investors who have purchased shares of any of
the Dean Witter Funds that are multiple class funds ("Dean Witter Multi-Class
Funds"), shares of Dean Witter Multi-State Municipal Series Trust and Dean
Witter Hawaii Municipal Trust, which are Dean Witter Funds sold with a front-end
sales charge ("FSC Funds"), and shares of Dean Witter Global Short-Term Income
Fund Inc. ("Global Short-Term"), which is a Dean Witter Fund offered with a
contingent deferred sales charge ("CDSC"), will be permitted, after the shares
of the Fund acquired by purchase (not by exchange or dividend reinvestment) have
been held for thirty days, to redeem all or part of their shares in that Fund,
have the proceeds invested in shares of the Fund, Dean Witter Liquid Asset Fund
Inc., Dean Witter Tax-Free Daily Income Trust, Dean Witter California Tax-Free
Daily Income Trust, or Dean Witter U.S. Government Money Market Trust (which
five funds are called "money market funds") or Dean Witter Short-Term U.S.
Treasury Trust, Dean Witter Limited Term Municipal Trust, Dean Witter Short-Term
Bond Fund and Dean Witter Intermediate Term U.S. Treasury Trust (these nine
funds, including the Fund, are collectively referred to herein as the "Exchange
Funds"). There is no waiting period for shares acquired by exchange or dividend
reinvestment. Shares of the Exchange Funds received in an exchange for shares of
a Dean Witter Multi-Class Fund may be redeemed and exchanged only for shares of
the corresponding Class of a Dean Witter Multi-Class Fund or for shares of one
of the other Exchange Funds, provided that shares of the Exchange Funds received
in an exchange for Class A shares of a Dean Witter Multi-Class Fund may also be
redeemed and exchanged for shares of a FSC Fund, and shares of the Exchange
Funds received in an exchange for Class B shares of a Dean Witter Multi-Class
Fund may also be redeemed and exchanged for shares of Global Short-Term. In
addition, shares of the Exchange Funds received in an exchange for shares of a
FSC Fund may be redeemed and exchanged for Class A shares of a Dean Witter
Multi-Class Fund or for shares of one of the other Exchange Funds, and shares of
the Exchange Funds received in an exchange for shares of Global Short-Term may
be redeemed and exchanged for Class B shares of a Dean Witter Multi-Class Fund
or for shares of one of the other Exchange Funds. Ultimately, any applicable
CDSC will have to be paid upon redemption of shares originally purchased from
Global Short-Term or a Class of a Dean Witter Multi-Class Fund that imposes a
CDSC. An exchange will be treated for federal income tax purposes the same as a
repurchase or redemption of shares, on which the shareholder may realize a
capital gain or loss.
    
 
    Any new account established through the Exchange Privilege will have the
same registration and cash dividend or dividend reinvestment plan as the present
account, unless the Transfer Agent receives written notification to the
contrary. For telephone exchanges, the exact registration of the existing
account and the account number must be provided.
 
    Any shares held in certificate form cannot be exchanged but must be
forwarded to the Transfer Agent and deposited into the shareholder's account
before being eligible for exchange. (Certificates mailed in for deposit should
not be endorsed.)
 
   
    When shares of a Dean Witter Multi-Class Fund or Global Short-Term are
exchanged for shares of the Fund or any other Exchange Fund, the exchange is
executed at no charge to the shareholder, without the imposition of the CDSC at
the time of the exchange. During the period of time the shareholder remains in
the Exchange Fund (calculated from the last day of the month in which the
Exchange Fund shares were reacquired), the holding period or "year since
purchase payment made" is frozen. When shares are redeemed out of the Exchange
Fund they will be subject to a CDSC which would be based upon the period of time
the shareholder held shares in a Dean Witter Multi-Class Fund or Global
Short-Term. However, in the case of shares exchanged into an Exchange Fund on or
after April 23, 1990, upon redemption of shares which results in a CDSC being
imposed, a credit (not to exceed the amount of the CDSC) will be given in an
amount equal to the Exchange Fund 12b-1 distribution fees, if any, incurred on
or after that date which are attributable to those shares. Shareholders
acquiring shares of an Exchange Fund pursuant to this exchange privilege may
exchange those shares back into a Dean Witter Multi-Class Fund or Global
Short-Term from the Exchange Funds, with no CDSC being imposed on such exchange.
The holding period previously frozen when shares were first
    
 
                                       26
<PAGE>
   
exchanged for shares of the Exchange Fund resumes on the last day of the month
in which shares of a Dean Witter Multi-Class Fund or Global Short-Term are
reacquired. Thus, a CDSC is imposed only upon an ultimate redemption, based upon
the time (calculated as described above) the shareholder was invested in a
Multi-Class Fund or in Global Short-Term. In the case of exchanges of Class A
shares of a Dean Witter Multi-Class Fund that are subject to a CDSC, the holding
period also includes the time (calculated as described above) the shareholder
was invested in a FSC fund.
    
 
   
    When shares initially purchased in a Dean Witter Multi-Class Fund or in
Global Short-Term are exchanged for shares of a Dean Witter Multi-Class Fund,
shares of Global Short-Term, shares of a FSC Fund, or shares of an Exchange
Fund, the date of purchase of the shares of the fund exchanged into, for
purposes of the CDSC upon redemption, will be the last day of the month in which
shares being exchanged were originally purchased. In allocating the purchase
payments between funds for purposes of the CDSC, the amount which represents the
current net asset value of shares at the time of the exchange which were (i)
purchased more than one, three or six years (depending on the CDSC schedule
applicable to the shares) prior to the exchange, (ii) originally acquired
through reinvestment of dividends or distributions and (iii) acquired in
exchange for shares of FSC Funds, or for shares of other Dean Witter Funds for
which shares of FSC Funds have been exchanged (all such shares called "Free
Shares"), will be exchanged first. After an exchange, all dividends earned on
shares in an Exchange Fund will be considered Free Shares. If the exchanged
amount exceeds the value of such Free Shares, an exchange is made, on a
block-by-block basis, of non-Free Shares held for the longest period of time
(except that if shares held for identical periods of time but subject to
different CDSC schedules are held in the same Exchange Privilege account, the
shares of that block that are subject to a lower CDSC rate will be exchanged
prior to the shares of that block that are subject to a higher CDSC rate).
Shares equal to any appreciation in the value of non-Free Shares exchanged will
be treated as Free Shares, and the amount of the purchase payments for the
non-Free Shares of the fund exchanged into will be equal to the lesser of (a)
the purchase payments for, or (b) the current net asset value of, the exchanged
non-Free Shares. If an exchange between funds would result in exchange of only
part of a particular block of non-Free Shares, then shares equal to any
appreciation in the value of the block (up to the amount of the exchange) will
be treated as Free Shares and exchanged first, and the purchase payment for that
block will be allocated on a pro rata basis between the non-Free Shares of that
block to be retained and the non-Free Shares to be exchanged. The prorated
amount of such purchase payment attributable to the retained non-Free Shares
will remain as the purchase payment for such shares, and the amount of purchase
payment for the exchanged non-Free Shares will be equal to the lesser of (a) the
prorated amount of the purchase payment for, or (b) the current net asset value
of, those exchanged non-Free Shares. Based upon the exchange procedures
described in the Dean Witter Multi-Class Fund Prospectus under the caption
"Purchase of Fund Shares" and in the Global Short-Term Prospectus under the
caption "Contingent Deferred Sales Charge," any applicable CDSC will be imposed
upon the ultimate redemption of shares of any fund, regardless of the number of
exchanges since those shares were originally purchased.
    
 
    With respect to the redemption or repurchase of shares of the Fund, the
application of proceeds to the purchase of new shares in the Fund or any other
of the funds and the general administration of the Exchange Privilege, the
Transfer Agent acts as agent for DWR and for the shareholder's Selected Broker-
Dealer, if any, in the performance of such functions. With respect to exchanges,
redemptions or repurchases, the Transfer Agent shall be liable for its own
negligence and not for the default or negligence of its correspondents or for
losses in transit. The Fund shall not be liable for any default or negligence of
the Transfer Agent, Distributor or any Selected Broker-Dealer.
 
    Exchange Privilege accounts may also be maintained for shareholders of the
money market funds who acquired their shares in exchange for shares of various
TCW/DW Funds, a group of funds distributed by the Distributor for which TCW
Funds Management, Inc. serves as Adviser, under the terms and conditions
described in the Prospectus and Statement of Additional Information of each
TCW/DW Fund.
 
    The Distributor and any Selected Broker-Dealer have authorized and appointed
the Transfer Agent to act as their agent in connection with the application of
proceeds of any redemption of Fund shares to
 
                                       27
<PAGE>
   
the purchase of the shares of any other fund and the general administration of
the Exchange Privilege. No commission or discounts will be paid to the
Distributor or any Selected Broker-Dealer for any transactions pursuant to this
Exchange Privilege.
    
 
    The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain a copy and examine it carefully
before investing. An exchange will be treated for federal income tax purposes
the same as a repurchase or redemption of shares, on which the shareholder may
realize a capital gain or loss. However, the ability to deduct capital losses on
an exchange may be limited in situations where there is an exchange of shares
within ninety days after the shares are purchased. The Exchange Privilege is
only available in states where an exchange may legally be made.
 
   
    Shares of the Fund acquired pursuant to the Exchange Privilege will be held
by the Fund's transfer agent in an Exchange Privilege account distinct from any
account of the same shareholder who may have acquired shares of the Fund
directly. A shareholder of the Fund will not be permitted to make additional
investments in such Exchange Privilege account, except through the exchange of
additional shares of the fund in which the shareholder had initially invested,
and the proceeds of any shares redeemed from such Exchange Privilege account,
may not thereafter be placed back into that Exchange Privilege account, except
by utilizing the Reinstatement Privilege (see "Redemptions and
Repurchases--Reinstatement Privilege" in the Dean Witter Multi-Class Fund,
Global Short-Term or FSC Fund Prospectus. If such a shareholder desires to make
any additional investments in the Fund, a separate account will be maintained
for receipt of such investments. The Fund will have additional costs for account
maintenance if a shareholder has more than one account with the Fund.
    
 
    The Fund also maintains Exchange Privilege Accounts for shareholders who
acquired their shares of the Fund pursuant to exchange privileges offered by
other investment companies with which the Investment Manager is not affiliated.
The Fund also expects to make available such exchange privilege accounts to
other investment companies that may hereafter be managed by the Investment
Manager.
 
   
    Exchanges are subject to the minimum investment requirement and any other
conditions imposed by each fund. The minimum initial investment for the Exchange
Privilege account of each Class is $10,000 for Dean Witter Short-Term U.S.
Treasury Trust (although that fund may, in its discretion, accept initial
purchases as low as $5,000) and $5,000 for the Fund, Dean Witter Liquid Asset
Fund Inc., Dean Witter Tax-Free Daily Income Trust, and Dean Witter California
Tax-Free Daily Income Trust, although those funds may, at their discretion,
accept initial investments of as low as $1,000. The minimum initial investment
for the Exchange Privilege account of each Class is $5,000 for Dean Witter
Special Value Fund. The minimum initial investment for the Exchange Privilege
account of each Class of all other Dean Witter Funds for which the Exchange
Privilege is available is $1,000. Upon exchange into an Exchange Fund, the
shares of that fund will be held in a special Exchange Privilege Account
separately from accounts of those shareholders who have acquired their shares
directly from that fund. As a result, certain services normally available to
shareholders of money market funds, including the check writing feature, will
not be available for funds held in that account.
    
 
   
    The Fund and each of the other Dean Witter Funds may limit the number of
times this Exchange Privilege may be exercised by any investor within a
specified period of time. Also, the Exchange Privilege may be terminated or
revised at any time by any of the Dean Witter Funds, upon such notice as may be
required by applicable regulatory agencies (presently sixty days' prior written
notice for termination or material revision), provided that six months' prior
written notice of termination will be given to the shareholders who hold shares
of Exchange Funds or TCW/DW North American Government Income Trust, pursuant to
the Exchange Privilege, and provided further that the Exchange Privilege may be
terminated or materially revised at times (a) when the New York Stock Exchange
is closed for other than customary weekends and holidays, (b) when trading on
that Exchange is restricted, (c) when an emergency exists as a result of which
disposal by the Fund of securities owned by it is not reasonably practicable or
it is not reasonably practicable for the Fund fairly to determine the value of
its net assets, (d) during any other period when the Securities and Exchange
Commission by order so permits
    
 
                                       28
<PAGE>
   
(provided that applicable rules and regulations of the Securities and Exchange
Commission shall govern as to whether the conditions prescribed in (b) or (c)
exist), or (e) if the Fund would be unable to invest amounts effectively in
accordance with its investment objective(s), policies and restrictions.
    
 
PLAN OF DISTRIBUTION
 
   
    In accordance with a Plan of Distribution pursuant to Rule 12b-1 under the
Act between the Fund and Dean Witter Distributors Inc. (the "Distributor"), the
Distributor provides certain services in connection with the promotion of sales
of Fund shares (the "Plan" refers to the Plan and Agreement of Distribution
prior to the reorganization and to the Plan of Distribution after the
reorganization). The Plan was approved by the Board of Trustees on February 15,
1990 and by DWR as the Fund's then sole shareholder on February 16, 1990,
whereupon the Plan went into effect. The Shareholders of the Fund subsequently
approved the Plan at a Special Meeting of Shareholders held on June 20, 1991.
The vote of the Trustees, which was cast in person at a meeting called for the
purpose of voting on such Plan, included a majority of the Trustees who are not
and were not at the time of their voting interested persons of the Fund and who
have and had at the time of their votes no direct or indirect financial interest
in the operation of the Plan (the "Independent 12b-1 Trustees").
    
 
    The Plan provides that the Distributor bears the expense of all promotional
and distribution related activities on behalf of the Fund, except for expenses
that the Trustees determine to reimburse, as described below. The following
activities and services may be provided by the Distributor under the Plan: (1)
compensation to and expenses of DWR's and other Selected Broker-Dealers' account
executives and other employees, including overhead and telephone expenses; (2)
sales incentives and bonuses to sales representatives and to marketing personnel
in connection with promoting sales of the Fund's shares; (3) expenses incurred
in connection with promoting sales of the Fund's shares; (4) preparing and
distributing sales literature; and (5) providing advertising and promotional
activities, including direct mail solicitation and television, radio, newspaper,
magazine and other media advertisements.
 
   
    DWR account executives are paid an annual residual commission, currently a
residual of up to 0.10% of the current value of the respective accounts for
which they are the account executives of record. The "gross residual" is a
charge which reflects residual commissions paid by DWR to its account executives
and DWR's expenses associated with the servicing of shareholder's accounts,
including the expenses of operating DWR's branch offices in connection with the
servicing of shareholder's accounts, which expenses include lease costs, the
salaries and employee benefits of operations and sales support personnel,
utility costs, communications costs and the costs of stationery and supplies and
other expenses relating to branch office serving of shareholder accounts.
    
 
   
    The Fund is authorized to reimburse specific expenses incurred or to be
incurred in promoting the distribution of the Fund's shares. Reimbursement is
made through payments at the end of each month. The amount of each monthly
payment may in no event exceed an amount equal to a payment at the annual rate
of 0.15 of 1% of the Fund's average daily net assets during the month. No
interest or other financing charges will be incurred for which reimbursement
payments under the Plan will be made. In addition, no interest charges, if any,
incurred on any distribution expense incurred by the Distributor or other
selected dealers pursuant to the Plan, will be reimbursable under the Plan. In
the case of all expenses other than expenses representing a residual to account
executives, such amounts shall be determined at the beginning of each calendar
quarter by the Trustees, including a majority of the Independent 12b-1 Trustees.
Expenses representing a residual to account executives may be reimbursed without
prior determination. In the event that the Distributor proposes that monies
shall be reimbursed for other than such expenses, then in making quarterly
determinations of the amounts that may be expended by the Fund, the Investment
Manager provides and the Trustees review a quarterly budget of projected
incremental distribution expenses to be incurred on behalf of the Fund, together
with a report explaining the purposes and anticipated benefits of incurring such
expenses. The Trustees determine which particular expenses, and the portions
thereof, that may be borne by the Fund, and in making such a determination shall
consider the scope of the Distributor's commitment to promoting the distribution
of the Fund's shares. The Fund reimbursed $43,344 to the Distributor pursuant to
the Plan
    
 
                                       29
<PAGE>
   
which amounted to 0.10 of 1% of the Fund's average daily net assets for the year
ended December 31, 1997. Based upon the total amounts spent by the Distributor
during the period, it is estimated that the amount paid by the Fund to the
Distributor for distribution was spent in approximately the following ways: (i)
advertising--$-0-; (ii) printing and mailing prospectuses to other than current
shareholders-- $-0-; (iii) compensation to underwriters--$-0-; (iv) compensation
to dealers--$-0-; (v) compensation to sales personnel--$-0-; and (vi) other,
which accrued for expenses relating to compensation of sales personnel and other
miscellaneous expenses--$43,344. No payments under the Plan were made for
overhead, interest, carrying or other financing charges.
    
 
    Under the Plan, the Distributor uses its best efforts in rendering services
to the Fund, but in the absence of willful misfeasance, bad faith, gross
negligence or reckless disregard of its obligations, the Distributor is not
liable to the Fund or any of its shareholders for any error of judgment or
mistake of law or for any act or omission or for any losses sustained by the
Fund or its shareholders.
 
   
    Continuance of the Plan until April 30, 1998 was approved by the Trustees,
including a majority of the Independent 12b-1 Trustees, at their meeting held on
April 24, 1997. In making their determination to continue the Plan until April
30, 1998, the Board of Trustees, including all of the Independent Trustees,
arrived at the conclusion that the Plan the Directors were provided at the April
24, 1997 meeting had benefitted the Fund. This conclusion was based upon the
Investment Manager's belief that the expenditures made pursuant to the Plan had
tended to arrest the decline of Fund assets by meeting the competitive efforts
of other, similar financial products, and had encouraged the account executives
employed by DWR and other Selected Broker-Dealers to increase their efforts in
selling shares of the Fund. The Board of Trustees, including the Independent
Trustees, also concluded that, in their judgment, there is a reasonable
likelihood that the Plan will continue to benefit the Fund and its shareholders.
An amendment to increase materially the maximum amount authorized to be spent
under the Plan must be approved by the shareholders of the Fund, and all
material amendments to the Plan must be approved by the Trustees in the manner
described above. The Plan may be terminated at any time, without payment of any
penalty, by vote of the holders of a majority of the Independent Trustees or by
a vote of a majority of the outstanding voting securities of the Fund (as
defined in the Act) on not more than thirty days' written notice to any other
party to the Plan. So long as the Plan is in effect, the selection or nomination
of the Independent Trustees is committed to the discretion of the Independent
12b-1 Trustees.
    
 
   
    At their meeting held on October 30, 1992, the Trustees of the Fund,
including all of the independent 12b-1 Trustees, approved certain amendments to
the Plan which took effect in January, 1993 and were designed to reflect the
fact that upon an internal reorganization, the share distribution activities,
theretofore performed by the Fund or for the Fund by DWR were assumed by the
Distributor and DWR's sales activities are now being performed pursuant to the
terms of a selected dealer agreement between the Distributor and DWR. The
amendments provide that payments under the Plan will be made to the Distributor
rather than to the Investment Manager as before the amendment, and that the
Distributor in turn is authorized to make payments to DWR, its affiliates or
other Selected Broker-Dealers (or direct that the Fund pay such entities
directly). The Distributor is also authorized to retain part of such fee as
compensation for its own distribution-related expenses. At their meeting held on
July 23, 1997, the Trustees of the Fund, including all of the Independent 12b-1
Trustees, approved amendments to the Plan to change the provisions regarding
quarterly budgets.
    
 
    Under the Plan, the Distributor provides the Fund, for review by the
Trustees, and the Trustees review, promptly after the end of each calendar
quarter, a written report regarding the incremental distribution expenses
incurred on behalf of the Fund during such calendar quarter, which report
includes (1) an itemization of the types of expenses and the purposes therefore;
(2) the amounts of such expenses; and (3) a description of the benefits derived
by the Fund. In the Trustees' quarterly review of the Plan they consider its
continued appropriateness and the level of compensation provided therein.
 
    No interested person of the Fund nor any Trustee of the Fund who is not an
interested person of the Fund, as defined in the Act, had any direct or indirect
financial interest in the operation of the Plan and
 
                                       30
<PAGE>
   
Agreement except to the extent that the Distributor, InterCapital, DWR, DWSC or
the Investment Manager or certain of its employees may be deemed to have such an
interest as a result of benefits derived from the successful operation of the
Plan or as a result of receiving a portion of the amounts expended thereunder by
the Fund.
    
 
HOW NET ASSET VALUE IS DETERMINED
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, the net asset value of the Fund is
determined as of the close of trading on each day that the New York Stock
Exchange is open. The New York Stock Exchange currently observes the following
holidays: New Year's Day, Reverend Dr. Martin Luther King, Jr. Day, Presidents'
Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day,
and Christmas Day.
    
 
    The Fund utilizes the amortized cost method in valuing its portfolio
securities for purposes of determining the net asset value of shares of the
Fund. The Fund utilizes the amortized cost method in valuing its portfolio
securities even though the portfolio securities may increase or decrease in
market value, generally, in connection with changes in interest rates. The
amortized cost method of valuation involves valuing a security at its cost
adjusted by a constant amortization to maturity of any discount or premium,
regardless of the impact of fluctuating interest rates on the market value of
the instrument. While this method provides certainty in valuation, it may result
in periods during which value, as determined by amortized cost, is higher or
lower than the price the Fund would receive if it sold the instrument. During
such periods, the yield to investors in the Fund may differ somewhat from that
obtained in a similar company which uses mark to market values for all its
portfolio securities. For example, if the use of amortized cost resulted in a
lower (higher) aggregate portfolio value on a particular day, a prospective
investor in the Fund would be able to obtain a somewhat higher (lower) yield
than would result from investment in such a similar company and existing
investors would receive less (more) investment income. The purpose of this
method of calculation is to facilitate the maintenance of a constant net asset
value per share of $1.00.
 
    The Fund's use of the amortized cost method to value its portfolio
securities and the maintenance of the per share net asset value of $1.00 is
permitted pursuant to Rule 2a-7 of the Act (the "Rule"), and is conditioned on
its compliance with various conditions contained in the Rule including: (a) the
Trust's Trustees are obligated, as a particular responsibility within the
overall duty of care owed to the Trust's shareholders, to establish procedures
reasonably designed, taking into account current market conditions and the
Fund's investment objective to stabilize the net asset value per share as
computed for the purpose of distribution and redemption at $1.00 per share; (b)
(i) the procedures include calculation, at such intervals as are reasonable in
light of current market conditions, of the deviation, if any between net asset
value per share using amortized cost to value portfolio securities and net asset
value per share based upon available market quotations with respect to such
portfolio securities (for the purpose of determining market value, securities as
to which the Trust has a "put" will be valued at the higher of market value or
exercise price); (ii) periodic review by the Trustees of the amount of deviation
as well as methods used to calculate it, and (iii) maintenance of written
records of the procedures, the Trustees considerations made pursuant to them and
any actions taken upon such consideration; the Trustees will consider what steps
should be taken, if any, in the event of a difference of more than 1/2 of 1%
between the two methods of valuation; and (c) the Trustees should take such
action as they deem appropriate to eliminate or reduce, to the extent reasonably
practicable, material dilution or other unfair results to investors or existing
shareholders. Such action may include: selling portfolio instruments prior to
maturity to realize capital gains or losses or to shorten the average portfolio
maturity of the Trust; withholding dividends; utilizing a net asset value per
share as determined by using available market quotations or reducing the number
of its outstanding shares. Any reduction of outstanding shares will be effected
by having each shareholder proportionately contribute to the Trust's capital a
number of shares which represent the difference between the amortized cost
valuation and market valuation of the portfolio. Each shareholder will be deemed
to have agreed to such contribution by his or her investment in the Trust.
 
                                       31
<PAGE>
    The Rule further requires that the Fund limit its investments to U.S.
dollar-denominated instruments which the Board of Trustees determines present
minimal credit risks and which are Eligible Securities (as defined below). The
Rule also requires the Fund to maintain a dollar weighted average portfolio
maturity (not more than 90 days) appropriate to its objective of maintaining a
stable net asset value of $1.00 per share and precludes the purchase of any
instrument with a remaining maturity of more than thirteen months. Should the
disposition of a portfolio security result in a dollar weighted average
portfolio maturity of more than 90 days, the Fund would be required to invest
its available cash in such a manner as to reduce such maturity to 90 days or
less as soon as is reasonably practicable.
 
    At the time the Fund makes the commitment to purchase a Municipal Obligation
on a when-issued or delayed delivery basis, it will record the transaction and
thereafter reflect the value, each day, of the Municipal Obligation in
determining its net asset value. Repurchase agreements are valued at the face
value of the repurchase agreement plus any accrued interest thereon to date.
 
    Generally, for purposes of the procedures adopted under the Rule, the
maturity of a portfolio instrument is deemed to be the period remaining
(calculated from the trade date or such other date on which the Trust's interest
in the instrument is subject to market action) until the date noted on the face
of the instrument as the date on which the principal amount must be paid, or in
the case of an instrument called for redemption, the date on which the
redemption payment must be made.
 
    A variable rate obligation that is subject to a demand feature is deemed to
have a maturity equal to the longer of the period remaining until the next
readjustment of the interest rate or the period remaining until the principal
amount can be recovered through demand. A floating rate instrument that is
subject to a demand feature is deemed to have a maturity equal to the period
remaining until the principal amount can be recovered through demand.
 
    An Eligible Security generally is defined in the Rule to mean (i)A security
with a remaining maturity of 397 calendar days or less that has received a
short-term rating (or that has been issued by an issuer) that has received a
short-term rating with respect to a class of debt obligations, or any debt
obligation within that class, that is comparable in priority and security with
the security) by the Requisite NRSROs in one of the two highest short-term
rating categories (within which there may be sub-categories or gradations
indicating relative standing); or (ii) A security: (A) That at the time of
issuance had a remaining maturity of more than 397 calendar days but that has a
remaining maturity of 397 calendar days or less; and (B) Whose issuer has
received from the Requisite NRSROs a rating with respect to a class of debt
obligations (or any debt obligation within that class) that is now comparable in
priority and security with the security, in one of the two highest short-term
rating categories (within which there may be sub-categories or gradations
indicating relative standing); or (iii) An unrated Security that is of
comparable quality to a security meeting the requirements of (i) or (ii) above,
as determined by the money market fund's board of directors.
 
   
    As permitted by the Rule, the Board has delegated to the Fund's Investment
Manager, subject to the Board's oversight pursuant to guidelines and procedures
adopted by the Board, the authority to determine which securities present
minimal credit risks and which unrated securities are comparable in quality to
rated securities.
    
 
    The Rule further requires that the Fund limit its investments to U.S.
dollar-denominated instruments which the Trustees determine present minimal
credit risks and which are Eligible Securities. The Rule also requires the Fund
to maintain a dollar-weighted average portfolio maturity (not more than 90 days)
appropriate to its objective of maintaining a stable net asset value of $1.00
per share and precludes the purchase of any instrument with a remaining maturity
of more than 397 days. Should the disposition of a portfolio security result in
a dollar-weighted average portfolio maturity of more than 90 days, the Fund will
invest its available cash in such a manner as to reduce such maturity to 90 days
or less as soon as is reasonably practicable.
 
   
    If the Board determines that it is no longer in the best interests of the
Fund and its shareholders to maintain a stable price of $1.00 per share or if
the Board believes that maintaining such price no longer
    
 
                                       32
<PAGE>
   
reflects a market-based net asset value per share, the Board has the right to
change from an amortized cost basis of valuation to valuation based on market
quotations. The Fund will notify shareholders of any such changes.
    
 
    The Fund will manage its portfolio in an effort to maintain a constant $1.00
per share price, but it cannot assure that the value of its shares will never
deviate from this price. Since dividends from net investment income are declared
and reinvested on a daily basis, the net asset value per share, under ordinary
circumstances, is likely to remain constant. Realized and unrealized gains and
losses will not be distributed on a daily basis but will be reflected in the
Fund's net asset value. The amounts of such gains and losses will be considered
by the Board of Trustees in determining the action to be taken to maintain the
Fund's $1.00 per share net asset value. Such action may include distribution at
any time of part or all of the then accumulated undistributed net realized
capital gains, or reduction or elimination of daily dividends by an amount equal
to part or all of the then accumulated net realized capital losses. However, if
realized losses should exceed the sum of net investment income plus realized
gains on any day, the net asset value per share on that day might decline below
$1.00 per share. In such circumstances, the Fund may reduce or eliminate the
payment of daily dividends for a period of time in an effort to restore the
Fund's $1.00 per share net asset value. A decline in prices of securities could
result in significant unrealized depreciation on a mark-to-market basis. Under
these circumstances the Fund may reduce or eliminate the payment of dividends
and utilize a net asset value per share as determined by using available market
quotations or reduce the number of its shares outstanding.
 
REDEMPTION OF FUND SHARES
- --------------------------------------------------------------------------------
 
    As discussed in the Prospectus, shares of the Fund may be redeemed or
repurchased at net asset value at any time. When a redemption is made by check
and a check is presented to the Transfer Agent for payment, the Transfer Agent
will redeem a sufficient number of full and fractional shares in the
shareholder's account to cover the amount of the check. This enables the
shareholder to continue earning daily income dividends until the check has
cleared.
 
    A check drawn by a shareholder against his or her account in the Fund
constitutes a request for redemption of a number of shares sufficient to provide
proceeds equal to the amount of the check. Payment of the proceeds of a check
will normally be made on the next business day after receipt by the Transfer
Agent of the check in proper form. Subject to the foregoing, if a check is
presented for payment to the Transfer Agent by a shareholder or payee in person,
the Transfer Agent will make payment by means of a check drawn on the Fund's
account or, in the case of a shareholder payee, to the shareholder's
predesignated bank account, but will not make payment in cash.
 
    The Fund reserves the right to suspend redemptions or repurchases or
postpone the date of payment (1) for any periods during which the New York Stock
Exchange is closed (other than for customary weekend and holiday closings), (2)
when trading on that Exchange is restricted or an emergency exists, as
determined by the Securities and Exchange Commission, so that disposal of the
Fund's investments or determination of the Fund's net asset value is not
reasonably practicable, or (3) for such other periods as the Commission by order
may permit for the protection of the Fund's investors.
 
    As discussed in the Prospectus, due to the relatively high cost of handling
small investments, the Fund reserves the right to redeem, at net asset value,
the shares of any shareholder (other than shares held in an Individual
Retirement Account or custodial account under Section 403(b)(7) of the Internal
Revenue Code) whose shares due to redemptions by the shareholders have a value
of less than $1,000 or such lesser amounts as may be fixed by the Board of
Trustees. However, before the Fund redeems such shares and sends the proceeds to
the shareholder, it will notify the shareholder that the value of his or her
shares is less than $1,000 and allow him or her 60 days to make an additional
investment in an amount which will increase the value of his or her account to
$1,000 or more before the redemption is processed.
 
                                       33
<PAGE>
   
    It has been and remains the Fund's policy and practice that, if checks for
redemption proceeds remain uncashed, no interest will accrue on amounts
represented by such uncashed checks.
    
 
    SYSTEMATIC WITHDRAWAL PLAN.  As discussed in the Prospectus, a systematic
withdrawal plan is available for shareholders who own or purchase shares of the
Fund having a minimum value of $5,000, which provides for monthly or quarterly
checks in any dollar amount not less than $25 or in any whole percentage of the
account balance on an annualized basis. The Transfer Agent acts as agent for the
shareholder in tendering to the Fund for redemption sufficient full and
fractional shares to provide the amount of the periodic withdrawal payment
designated in the application. The shares will be redeemed at their net asset
value determined, at the shareholder's option, on the tenth or twenty-fifth day
(or next business day) of the relevant month or quarter and normally a check for
the proceeds will be mailed by the Transfer Agent within five days after the
date of redemption. The withdrawal plan may be terminated at any time by the
Fund.
 
    Any shareholder who wishes to have payments under the withdrawal plan made
to a third party or sent to an address other than the one listed on the account
must send complete written instructions to the Transfer Agent to enroll in the
withdrawal plan. The shareholder's signature on such instructions must be
guaranteed by an eligible guarantor. A shareholder may, at any time, change the
amount and interval of withdrawal payments through his or her Account Executive
or by written notification to the Transfer Agent. In addition, the party and/or
the address to which checks are mailed may be changed by written notification to
the Transfer Agent, with signature guarantees required in the manner described
above. The shareholder may also terminate the withdrawal plan at any time by
written notice to the Transfer Agent. In the event of such termination, the
account will be continued as a regular shareholder investment account. The
shareholder may also redeem all or part of the shares held in the withdrawal
plan account (see "Redemption of Fund Shares" in the Prospectus) at any time. If
the number of shares redeemed is greater than the number of shares paid as
dividends, such redemptions may, of course, eventually result in liquidation of
all the shares in the account. The automatic cash withdrawal method of
redemption is not available for shares held in an Exchange Privilege Account.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    As discussed in the Prospectus, the Fund intends to declare dividends on
each day the New York Stock Exchange is open for business and distribute all of
its daily net investment income to shareholders of record as of the close of
business the preceding business day.
 
    In computing net investment income, the Fund will amortize any premiums and
original issue discounts on securities owned, if applicable. Capital gains or
losses realized upon sale or maturity of such securities will be based on their
amortized cost.
 
   
    Distributions of net long-term capital gains, if any, are taxable to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional shares or in cash. Capital gains distributions are not eligible for
the dividends received deduction. The Treasury intends to issue regulations to
permit shareholders to take into account their proportionate share of the Fund's
capital gains distributions that will be subject to a reduced rate under the
Taxpayer Relief Act of 1997. The Taxpayer Relief Act reduces the maximum tax on
long-term capital gains from 28% to 20%: however, it also lengthens the required
holding period to obtain the lower rate from more than 12 months to more than 18
months. The lower rates do not apply to collectibles and certain other assets.
Additionally, the maximum capital gain rate for assets that are held more than
five years and that are acquired after December 31, 2000 is 18%.
    
 
    The Fund has qualified and intends to remain qualified as a regulated
investment company under Subchapter M of the Internal Revenue Code of 1986, as
amended (the "Code"). If so qualified, the Fund will not be subject to federal
income tax on its net investment income and capital gains, if any, realized
during any fiscal year in which it distributes such income and capital gains to
its shareholders.
 
                                       34
<PAGE>
    As discussed in the Prospectus, the Fund intends to qualify to pay
"exempt-interest dividends" to its shareholders by maintaining, as of the close
of each quarter of its taxable year, at least 50% of the value of its total
assets in tax-exempt securities. An exempt-interest dividend is that part of a
dividend distribution made by the Fund which consists of interest received by
the Fund on tax-exempt securities upon which the shareholder incurs no federal
income taxes. Exempt-interest dividends are included, however, in determining
what portion, if any, of a person's Social Security benefits are subject to
federal income tax.
 
    The Trustees may revise the dividend policy, or postpone the payment of
dividends, if the Fund should have or anticipate any large unexpected expense,
loss or fluctuation in net assets which, in the opinion of the Trustees, might
have a significant adverse effect on shareholders. On occasion, in order to
maintain a constant $1.00 per share net asset value, the Trustees may direct
that the number of outstanding shares be reduced in each shareholder's account.
Such reduction may result in taxable income, if any, to a shareholder in excess
of the net increase (i.e., dividends, less such reductions), if any, in the
shareholder's account for a period. Furthermore, such reduction may be realized
as a capital loss when the shares are liquidated.
 
   
    It has been and remains the Fund's policy and practice that, if checks for
dividends or distributions paid in cash remain uncashed, no interest will accrue
on amounts represented by such uncashed checks.
    
 
    A number of provisions included in the Code by the Tax Reform Act of 1986
may affect the federal income tax liability of the Fund's shareholders, by
reducing the individual and corporate income tax rates and expanding the
alternative minimum tax provisions. In general, lower rates of taxation could
make tax-exempt bonds less attractive to investors and could decrease the value
of the tax-exempt securities held by the Fund and the net asset value of the
Fund's shares. Furthermore, some of the changes may reduce the extent to which
issuers may issue tax-exempt bonds. The Code now subjects interest received on
certain otherwise tax-exempt securities to alternative minimum tax. This
alternative minimum tax would apply to interest received on "private activity
bonds" (in general, bonds that benefit non-governmental entities) issued after
August 7, 1986 which, although tax-exempt, are used for purposes other than
those generally performed by governmental units (E.G., bonds used for commercial
or housing purposes). Income received on such bonds is classified as a "tax
preference item," under the alternative minimum tax, for both individual and
corporate investors. A substantial portion of the Fund's investments may be in
such "private activity bonds," with the result that a substantial portion of the
exempt-interest dividends paid by the Fund may be an item of tax preference to
shareholders subject to the alternative minimum tax. The Fund will report to
shareholders the portion of its dividends declared during the year which are a
tax preference item for alternative minimum tax purposes, as well as the overall
percentage of dividend distributions which constitutes exempt-interest
dividends. Individual taxpayers are generally subject to the alternative minimum
tax if their "regular tax" liability is less than 24% of their "alternative
minimum taxable income" reduced by an exemption amount ranging from $0 to
$40,000 depending upon the taxpayer's income and filing status. Alternative
minimum taxable income is generally equal to taxable income with certain
adjustments and increased by certain "tax preference items" which may include a
portion of the Fund's dividends as described above. In addition, the Code
further provides that corporations are subject to an alternative minimum tax
based, in part, on 75% of any excess of "adjusted current earnings" over taxable
income as adjusted for other tax preferences. Because an exempt-interest
dividend paid by the Fund will be included in computing adjusted current
earnings, a corporate shareholder may therefore be required to pay an increased
alternative minimum tax as the result of receiving exempt-interest dividends
paid by the Fund.
 
    The Code provides that every person required to file a tax return must
include on such return the amount of exempt-interest dividends received from the
Fund during the taxable year.
 
    The I Amendments and Reauthorization Act of 1986 (the "I Act") imposes a
deductible tax on a corporation's alternative minimum taxable income (computed
without regard to the alternative tax net operating loss deduction) at a rate of
$12 per $10,000 (0.12%) of alternative minimum taxable income in
 
                                       35
<PAGE>
excess of $2,000,000. The tax will be imposed for taxable years beginning after
December 31, 1986 and before January 1, 1996. The tax will be imposed even if
the corporation is not required to pay an alternative minimum tax because the
corporation's regular income tax liability exceeds its minimum tax liability.
Exempt-interest dividends paid by the Fund that create alternative minimum tax
preferences for corporate shareholders under the Code (as described above) may
be subject to the tax.
 
    Within 60 days after the end of its fiscal year, the Fund will mail to
shareholders a statement indicating the percentage of the dividend distributions
for such fiscal year which constitutes exempt-interest dividends and the
percentage, if any, that is taxable, and to what extent the taxable portion is
short-term capital gains or ordinary income. This percentage should be applied
uniformly to all monthly distributions made during the fiscal year to determine
what proportion of the dividends paid is tax-exempt. The percentage may differ
from the percentage of tax-exempt dividend distributions for any particular
month.
 
    Shareholders will be subject to federal income tax on dividends paid from
interest income derived from taxable securities and on distributions of net
short-term capital gains. Such interest and realized net short-term capital
gains dividends and distributions are taxable to the shareholder as ordinary
dividend income regardless of whether the shareholder receives such
distributions in additional shares or in cash. Distributions of long-term
capital gains, if any, are taxable as long-term capital gains, regardless of how
long the shareholder has held the Fund shares and regardless of whether the
distribution is received in additional shares or cash. Since the Fund's income
is expected to be derived entirely from interest rather than dividends, it is
anticipated that none of such dividend distributions will be eligible for the
federal dividends received deduction available to corporations.
 
   
    Any loss on the sale or exchange of shares of the Fund which are held for 6
months or less is disallowed to the extent of the amount of any exempt-interest
dividend paid with respect to such shares. Treasury Regulations may provide for
a reduction in such required holding periods. Any loss realized by shareholders
upon a redemption of shares within six months of the date of their purchase will
be treated as a long-term capital loss to the extent of any distributions of net
long-term capital gains during the six-month period.
    
 
    The Code requires each regulated investment company to pay a nondeductible
4% excise tax to the extent the company does not distribute, during each
calendar year, 98% of its ordinary income, determined on a calendar year basis,
and 98% of its capital gains, determined in general on an October 31 year end,
plus certain undistributed amounts from previous years. The required
distributions, however, are based only on the taxable income of a regulated
investment company. The excise tax, therefore, will generally not apply to the
tax-exempt income of a regulated investment company such as the Trust that pays
exempt-interest dividends. The Fund anticipates that it will make sufficient
timely distributions to avoid imposition of the excise tax.
 
    Interest on indebtedness incurred or continued by a shareholder to purchase
or carry shares of the Fund is not deductible. Furthermore, entities or persons
who are "substantial users" (or related persons) of facilities financed by
industrial development bonds should consult their tax advisers before purchasing
shares of the Fund. "Substantial user" is defined generally by Income Tax
Regulation 1.103-11(b) as including a "non-exempt person" who regularly uses in
trade or business a part of a facility financed from the proceeds of industrial
development bonds.
 
    From time to time, proposals have been introduced before Congress for the
purpose of restricting or eliminating the federal income tax exemption for
interest on municipal securities. Similar proposals may be introduced in the
future. If such a proposal were enacted, the availability of municipal
securities for investment by the Fund could be affected. In that event, the Fund
would re-evaluate its investment objective and policies.
 
    To the extent that dividends are derived from interest on New York
tax-exempt securities, such dividends will also be exempt from New York State
and City personal income taxes. Interest on
indebted-
 
                                       36
<PAGE>
ness incurred or continued to purchase or carry shares of an investment company
paying exempt-interest dividends, such as the Fund, may not be deductible by the
investor for State or City personal income tax purposes.
 
    The foregoing relates to federal income taxation and to New York State and
City personal income taxation as in effect as of the date of the Prospectus.
Distributions from investment income and capital gains, including
exempt-interest dividends, may be subject to New York franchise taxes if
received by a corporation doing business in New York, to state taxes in states
other than New York and to local taxes.
 
    Shareholders are urged to consult their attorneys or tax advisers regarding
specific questions as to federal, state or local taxes.
 
INFORMATION ON COMPUTATION OF YIELD
 
   
    The Fund's current yield for the seven days ending December 31, 1997 was
3.14%. The effective annual yield on December 31, 1997, was 3.19% assuming daily
compounding.
    
 
    The Fund's annualized current yield, as may be quoted from time to time in
advertisements and other communications to shareholders and potential investors,
is computed by determining, for a stated seven-day period, the net change,
exclusive of capital changes and including the value of additional shares
purchased with dividends and any dividends declared therefrom (which reflect
deductions of all expenses of the Fund such as management fees), in the value of
a hypothetical pre-existing account having a balance of one share at the
beginning of the period, and dividing the difference by the value of the account
at the beginning of the base period to obtain the base period return, and then
multiplying the base period return by (365/7).
 
    The Fund's annualized effective yield, as may be quoted from time to time in
advertisements and other communications to shareholders and potential investors,
is computed by determining (for the same stated seven-day period as for the
current yield), the net change, exclusive of capital changes and including the
value of additional shares purchased with dividends and any dividends declared
therefrom (which reflect deductions of all expenses of the Fund such as
management fees), in the value of a hypothetical pre-existing account having a
balance of one share at the beginning of the period, and dividing the difference
by the value of the account at the beginning of the base period to obtain the
base period return, and then compounding the base period return by adding 1,
raising the sum to a power equal to 365 divided by 7, and subtracting 1 from the
result.
 
    The yields quoted in any advertisement or other communication should not be
considered a representation of the yields of the Fund in the future since the
yield is not fixed. Actual yields will depend not only on the type, quality and
maturities of the investments held by the Fund and changes in interest rates on
such investments, but also on changes in the Fund's expenses during the period.
 
    Yield information may be useful in reviewing the performance of the Fund and
for providing a basis for comparison with other investment alternatives.
However, unlike bank deposits or other investments which typically pay a fixed
yield for a stated period of time, the Fund's yield fluctuates.
 
   
    Based upon a combined Federal and New York personal income tax bracket of
43.74%, the Fund's tax-equivalent yield for the seven days ending December 31,
1997, was 5.58%.
    
 
   
    Tax-equivalent yield is computed by dividing that portion of the current
yield (calculated as described above) which is tax-exempt by 1 minus a stated
tax rate and adding the quotient to that portion, if any, of the yield of the
Fund that is not tax-exempt. The Fund may also advertise the growth of
hypothetical investments of $10,000, $50,000 and $100,000 in shares of the Fund
by adding the sum of all distributions on 10,000, 50,000 or 100,000 shares of
the Fund since inception to $10,000, $50,000 and $100,000, as the case may be.
Investments of $10,000, $50,000 and $100,000 in the Fund at inception would have
grown to $12,335, $61,675 and $123,350, respectively, at December 31, 1997.
    
 
                                       37
<PAGE>
DESCRIPTION OF SHARES
- --------------------------------------------------------------------------------
 
   
    The shareholders of the Fund are entitled to a full vote for each full share
of beneficial interest held. The Fund is authorized to issue an unlimited number
of shares of beneficial interest. The shareholders of the Fund are entitled to a
full vote for each full share held. All of the Trustees have been elected by the
shareholders of the Fund, most recently at a Special Meeting of Shareholders
held on May 21, 1997. The Trust shall be of unlimited duration subject to the
provisions in the Declaration of Trust concerning termination by action of the
shareholders or the Trustees.
    
 
    The Declaration of Trust provides that no Trustee, officer, employee or
agent of the Fund is liable to the Fund or to a shareholder, nor is any Trustee,
officer, employee or agent liable to any third persons in connection with the
affairs of the Fund, except as such liability may arise from his own bad faith,
willful misfeasance, gross negligence, or reckless disregard of his duties. It
also provides that all third persons shall look solely to the Fund's property
for satisfaction of claims arising in connection with the affairs of the Fund.
With the exceptions stated, the Declaration of Trust provides that a Trustee,
officer, employee or agent is entitled to be indemnified against all liabilities
in connection with the affairs of the Fund.
 
CUSTODIAN AND TRANSFER AGENT
- --------------------------------------------------------------------------------
 
    The Bank of New York, 90 Washington Street, New York, New York, 10286 is the
Custodian of the Fund's assets. Any of the Fund's cash balances in excess of
$100,000 are unprotected by federal deposit insurance. Such balances may, at
times, be substantial.
 
   
    Dean Witter Trust FSB, Harborside Financial Center, Plaza Two, Jersey City,
New Jersey 07311 is the Transfer Agent of the Fund's shares and Dividend
Disbursing Agent for payment of dividends and distributions on Fund shares and
Agent for shareholders under various investment plans described herein. Dean
Witter Trust FSB is an affiliate of Dean Witter InterCapital Inc., the Fund's
Investment Manager, and Dean Witter Distributors Inc., the Fund's Distributor.
As Transfer Agent and Dividend Disbursing Agent, Dean Witter Trust FSB's
responsibilities include maintaining shareholder accounts, disbursing cash
dividends and reinvesting dividends, processing account registration changes;
handling purchase and redemption transactions, mailing prospectuses and reports,
mailing and tabulating proxies; processing share certificate transactions, and
maintaining shareholder records and lists. For these services Dean Witter Trust
FSB receives a per shareholder account fee from the Fund.
    
 
INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
 
    Price Waterhouse LLP serves as the independent accountants of the Fund. The
independent accountants are responsible for auditing the annual financial
statements of the Fund.
 
REPORTS TO SHAREHOLDERS
- --------------------------------------------------------------------------------
 
    The Fund will send to shareholders, at least semi-annually, reports showing
the Fund's portfolio and other information. An annual report containing
financial statements audited by independent accountants will be sent to
shareholders each year.
 
    The Fund's fiscal year ends on December 31. The financial statements of the
Fund must be audited at least once a year by independent accountants whose
selection is made annually by the Fund's Board of Trustees.
 
LEGAL COUNSEL
- --------------------------------------------------------------------------------
 
    Barry Fink, Esq., who is an officer and the General Counsel of the
Investment Manager, is an officer and the General Counsel of the Fund.
 
                                       38
<PAGE>
EXPERTS
- --------------------------------------------------------------------------------
 
    The financial statements of the Fund included in the Prospectus and
incorporated by reference in the Statement of Additional Information have been
so included and incorporated in reliance on the report of Price Waterhouse LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.
 
REGISTRATION STATEMENT
- --------------------------------------------------------------------------------
 
    This Statement of Additional Information and the Prospectus do not contain
all of the information set forth in the Registration Statement the Fund has
filed with the Securities and Exchange Commission. The complete Registration
Statement may be obtained from the Securities and Exchange Commission upon
payment of the fee prescribed by the rules and regulations of the Commission.
 
FINANCIAL STATEMENTS
- --------------------------------------------------------------------------------
 
   
    The audited financial statements of the Fund for the year ended December 31,
1997, and the report of the independent accountants thereon, are set forth in
the Fund's Prospectus, and are incorporated herein by reference.
    
 
                                       39
<PAGE>
APPENDIX
- --------------------------------------------------------------------------------
 
RATINGS OF INVESTMENTS
 
MOODY'S INVESTORS SERVICE INC. ("MOODY'S")
 
                             MUNICIPAL BOND RATINGS
 
Aaa   Bonds which are rated Aaa are judged to be of the best quality. They carry
      the smallest degree of investment risk and are generally referred to as
      "gilt edge." Interest payments are protected by a large or by an
      exceptionally stable margin and principal is secure. While the various
      protective elements are likely to change, such changes as can be
      visualized are most unlikely to impair the fundamentally strong position
      of such issues.
 
Aa    Bonds which are Aa are judged to be of high quality by all standards.
      Together with the Aaa group they comprise what are generally known as high
      grade bonds. They are rated lower than the best bonds because margins of
      protection may not be as large as in Aaa securities or fluctuation of
      protective elements may be of greater amplitude or there may be other
      elements present which make the long-term risks appear somewhat larger
      than in Aaa securities.
 
A     Bonds which are rated A possess many favorable investment attributes and
      are to be considered as upper medium grade obligations. Factors giving
      security to principal and interest are considered adequate, but elements
      may be present which suggest a susceptibility to impairment sometime in
      the future.
 
Baa   Bonds which are rated Baa are considered as medium grade obligations;
      i.e., they are neither highly protected nor poorly secured. Interest
      payments and principal security appear adequate for the present but
      certain protective elements may be lacking or may be characteristically
      unreliable over any great length of time. Such bonds lack outstanding
      investment characteristics and in fact have speculative characteristics as
      well.
 
      Bonds rated Aaa, Aa, A and Baa are considered investment grade bonds.
 
Ba    Bonds which are rated Ba are judged to have speculative elements; their
      future cannot be considered as well assured. Often the protection of
      interest and principal payments may be very moderate, and therefore not
      well safeguarded during both good and bad times in the future. Uncertainty
      of position characterizes bonds in this class.
 
B     Bonds which are rated B generally lack characteristics of the desirable
      investment. Assurance of interest and principal payments or of maintenance
      of other terms of the contract over any long period of time may be small.
 
Caa   Bonds which are rated Caa are of poor standing. Such issues may be in
      default or there may be present elements of danger with respect to
      principal or interest.
 
Ca    Bonds which are rated Ca present obligations which are speculative in a
      high degree. Such issues are often in default or have other marked
      shortcomings.
 
C     Bonds which are rated C are the lowest rated class of bonds, and issues so
      rated can be regarded as having extremely poor prospects of ever attaining
      any real investment standing.
 
    CONDITIONAL RATING:  Bonds for which the security depends upon the
completion of some act or the fulfillment of some condition are rated
conditionally. These bonds secured by (a) earnings of projects under
construction, (b) earnings of projects unseasoned in operation experience, (c)
rentals which begin when facilities are completed or (d) payments to which some
other limiting condition attaches. Parenthetical rating denotes probable credit
stature upon completion of construction or elimination of basis of condition.
 
                                       40
<PAGE>
    RATING REFINEMENTS:  Moody's may apply numerical modifiers, 1, 2, and 3 in
each generic rating classification from Aa through B in its municipal bond
rating system. The modifier 1 indicates that the security ranks in the higher
end of its generic rating category; the modifier 2 indicates a mid-range
ranking; and a modifier 3 indicates that the issue ranks in the lower end of its
generic rating category.
 
                             MUNICIPAL NOTE RATINGS
 
    Moody's ratings for state and municipal note and other short-term loans are
designated Moody's Investment Grade (MIG). MIG 1 denotes best quality and means
there is present strong protection from established cash flows, superior
liquidity support or demonstrated broad-based access to the market for
refinancing. MIG 2 denotes high quality and means that margins of protection are
ample although not as large as in MIG 1. MIG 3 denotes favorable quality and
means that all security elements are accounted for but that the undeniable
strength of the previous grades, MIG 1 and MIG 2, is lacking. MIG 4 denotes
adequate quality and means that the protection commonly regarded as required of
an investment security is present and that while the notes are not distinctly or
predominantly speculative, there is specific risk.
 
                        VARIABLE RATE DEMAND OBLIGATIONS
 
    A short-term rating, in addition to the Bond or MIG ratings, designated VMIG
may also be assigned to an issue having a demand feature. The assignment of the
VMIG symbol reflects such characteristics as payment upon periodic demand rather
than fixed maturity dates and payment relying on external liquidity. The VMIG
rating criteria are identical to the MIG Criteria discussed above.
 
                            COMMERCIAL PAPER RATINGS
 
    Moody's Commercial Paper ratings are opinions of the ability to repay
punctually promissory obligations not having an original maturity in excess of
nine months. These ratings apply to Municipal Commercial Paper as well as
taxable Commercial Paper. Moody's employs the following three designations, all
judged to be investment grade, to indicate the relative repayment capacity of
rated issuers: Prime-1, Prime-2, Prime-3.
 
    Issuers rated Prime-1 have a superior capacity for repayment of short-term
promissory obligations. Issuers rated Prime-2 have a strong capacity for
repayment of short-term promissory obligations; and Issuers rated Prime-3 have
an acceptable capacity for repayment of short-term promissory obligations.
Issuers rated Not Prime do not fall within any of the Prime rating categories.
 
STANDARD & POOR'S CORPORATION ("STANDARD & POOR'S")
 
                             MUNICIPAL BOND RATINGS
 
    A Standard & Poor's municipal bond rating is a current assessment of the
creditworthiness of an obligor with respect to a specific obligation. This
assessment may take into consideration obligors such as guarantors, insurers, or
lessees.
 
    The ratings are based on current information furnished by the issuer or
obtained by Standard & Poor's from other sources it considers reliable. The
ratings are based, in varying degrees, on the following considerations: (1)
likelihood of default-capacity and willingness of the obligor as to the timely
payment of interest and repayment of principal in accordance with the terms of
the obligation; (2) nature of and provisions of the obligation; and (3)
protection afforded by, and relative position of the obligation in the event of
bankruptcy, reorganization or other arrangement under the laws of bankruptcy and
other laws affecting creditors' rights.
 
    Standard & Poor's does not perform an audit in connection with any rating
and may, on occasion, rely on unaudited financial information. The ratings may
be changed, suspended or withdrawn as a result of changes in, or unavailability
of, such information, or for other reasons.
 
                                       41
<PAGE>
AAA   Debt rated "AAA" has the highest rating assigned by Standard & Poor's.
      Capacity to pay interest and repay principal is extremely strong.
 
AA    Debt rated "AA" has a very strong capacity to pay interest and repay
      principal and differs from the highest-rated issues only in small degree.
 
A     Debt rated "A" has a strong capacity to pay interest and repay principal
      although they are somewhat more susceptible to the adverse effects of
      changes in circumstances and economic conditions than debt in higher-rated
      categories.
 
BBB   Debt rated "BBB" is regarded as having an adequate capacity to pay
      interest and repay principal. Whereas it normally exhibits adequate
      protection parameters, adverse economic conditions or changing
      circumstances are more likely to lead to a weakened capacity to pay
      interest and repay principal for debt in this category than for debt in
      higher-rated categories.
 
      Bonds rated AAA, AA, A and BBB are considered investment grade bonds.
 
BB    Debt rated "BB" has less near-term vulnerability to default than other
      speculative grade debt. However, it faces major ongoing uncertainties or
      exposure to adverse business, financial or economic conditions which would
      lead to inadequate capacity or willingness to pay interest and repay
      principal.
 
B     Debt rated "B" has a greater vulnerability to default but presently has
      the capacity to meet interest payments and principal repayments. Adverse
      business, financial or economic conditions would likely impair capacity or
      willingness to pay interest and repay principal.
 
CCC   Debt rated "CCC" has a current identifiable vulnerability to default, and
      is dependent upon favorable business, financial and economic conditions to
      meet timely payments of interest and repayments of principal. In the event
      of adverse business, financial or economic conditions, it is not likely to
      have the capacity to pay interest and repay principal.
 
CC    The rating "CC" is typically applied to debt subordinated to senior debt
      which is assigned an actual or implied "CCC" rating.
 
   
C     The rating "C" is typically applied to debt subordinated to senior debt
      which is assigned an actual or implied "CCC-" debt rating.
    
 
CI    The rating "CI" is reserved for income bonds on which no interest is being
      paid.
 
NR    Indicates that no rating has been requested, that there is insufficient
      information on which to base a rating or that Standard & Poor's does not
      rate a particular type of obligation as a matter of policy.
 
   
      Bonds rated "BB," "B," "CCC," "CC" and "C" are regarded as having
      predominantly speculative characteristics with respect to capacity to pay
      interest and repay principal. "BB" indicates the least degree of
      speculation and "C" the highest degree of speculation. While such debt
      will likely have some quality and protective characteristics, these are
      outweighed by large uncertainties or major risk exposures to adverse
      conditions.
    
 
      PLUS (+) OR MINUS (-):  The ratings from "AA" to "CCC" may be modified by
      the addition of a plus or minus sign to show relative standing with the
      major ratings categories.
 
      The foregoing ratings are sometimes followed by a "p" which indicates that
      the rating is provisional. A provisional rating assumes the successful
      completion of the project being financed by the bonds being rated and
      indicates that payment of debt service requirements is largely or entirely
      dependent upon the successful and timely completion of the project. This
      rating, however, while addressing credit quality subsequent to completion
      of the project, makes no comment on the likelihood or risk of default upon
      failure of such completion.
 
                                       42
<PAGE>
                             MUNICIPAL NOTE RATINGS
 
    Commencing on July 27, 1984, Standard & Poor's instituted a new rating
category with respect to certain municipal note issues with a maturity of less
than three years. The new note ratings denote the following:
 
SP-1  denotes a very strong or strong capacity to pay principal and interest.
      Issues determined to possess overwhelming safety characteristics are given
      a plus (+) designation (SP-1+).
 
SP-2  denotes a satisfactory capacity to pay principal and interest.
 
SP-3  denotes a speculative capacity to pay principal and interest.
 
                            COMMERCIAL PAPER RATINGS
 
   
    Standard and Poor's commercial paper rating is a current assessment of the
likelihood of timely payment of debt having an original maturity of no more than
365 days. The commercial paper rating is not a recommendation to purchase or
sell a security. The ratings are based upon current information furnished by the
issuer or obtained by Standard and Poor's from other sources it considers
reliable. The ratings may be changed, suspended or withdrawn as a result of
changes in or unavailability of such information. Ratings are graded into group
categories, ranging from "A" for the highest quality obligations to "D" for the
lowest. Ratings are applicable to both taxable and tax-exempt commercial paper.
The categories are as follows:
    
 
    Issuers assigned A ratings are regarded as having the greatest capacity for
timely payment. Issues in this category are further refined with the designation
1, 2 and 3 to indicate the relative degree of safety.
 
A-1   indicates that the degree of safety regarding timely payment is very
      strong.
 
   
A-2   indicates capacity for timely payment on issues with this designation is
      strong. However, the relative degree of safety is not as overwhelming as
      for issues designated "A-1."
    
 
A-3   indicates a satisfactory capacity for timely payment. Obligations carrying
      this designation are, however, somewhat more vulnerable to the adverse
      effects of changes in circumstances than obligations carrying the higher
      designations.
 
                                       43
<PAGE>

                  DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST

                              PART C  OTHER INFORMATION


Item 24.  Financial Statements and Exhibits

     (a)  FINANCIAL STATEMENTS 
     
     (1)  Financial statements and schedules, included 
          in Prospectus (Part A):
                                                                       Page in
                                                                      Prospectus
                                                                      ----------

               Financial Highlights for the period March 20, 1990 
               (commencement of operations) through December 31, 
               1990 and for the fiscal years ended  December 31, 
               1991,1992, 1993, 1994, 1995, 1996 and 1997                  2

               Portfolio of Investments at December 31, 1997              22

               Statement of assets and liabilities at 
               December 31, 1997                                          25

               Statement of operations for the year ended 
               December 31, 1997                                          26

               Statement of changes in net assets for the years 
               ended December 31, 1996 and December 31, 1997              27

               Notes to Financial Statements                              28



     (2)  Financial statements included in the Statement of Additional
          Information (Part B):

          None

     (3)  Financial statements included in Part C:

          None


     (b) EXHIBITS:

     2.   By-laws of the Registrant, Amended and Restated as of October 23, 1997

     5.   Form of Investment Management Agreement between the Registrant and
          Dean Witter InterCapital Inc.

     6.   Form of Distribution Agreement between the Registrant and Dean Witter
          Distributors Inc.

<PAGE>

     8.   Form of Transfer Agency and Service Agreement  between the Registrant
          and Dean Witter Trust FSB.

     11.  Consent of Independent Accountants.

     15.  Form of Amended and Restated Plan of Distribution between Registrant
          and Dean Witter Distributors Inc.

     16.  Schedule for Computation of Performance Quotations.

     27.  Financial Data Schedule.

  Other.  Power of Attorney.

All other exhibits were previously filed via EDGAR and are hereby incorporated
by reference.

Item 25.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT.

          None

Item 26.  NUMBER OF HOLDERS OF SECURITIES.

                  (1)                                 (2)
                                             Number of Record Holders
         Title of Class                      At January 31, 1998
         --------------                      ------------------------

         Share of Beneficial Interest               2,328

Item 27.  INDEMNIFICATION

     Pursuant to Section 5.3 of the Registrant's Declaration of Trust and under
Section 4.8 of the Registrant's By-Laws, the indemnification of the Registrant's
trustees, officers, employees and agents is permitted if it is determined that
they acted under the belief that their actions were in or not opposed to the
best interest of the Registrant, and, with respect to any criminal proceeding,
they had reasonable cause to believe their conduct was not unlawful.  In
addition, indemnification is permitted only if it is determined that the actions
in question did not render them liable by reason of willful misfeasance, bad
faith or gross negligence in the performance of their duties or by reason of
reckless disregard of their obligations and duties to the Registrant.  Trustees,
officers, employees and agents will be indemnified for the expense of litigation
if it is determined that they are entitled to indemnification against any
liability established in such litigation.  The Registrant may also advance money
for these expenses provided that they give their undertakings to repay the
Registrant unless their conduct is later determined to permit indemnification.

     Pursuant to Section 5.2 of the Registrant's Declaration of Trust and
paragraph 8 of the Registrant's Investment Management Agreement, neither the
Investment Manager nor any trustee, officer, employee or agent of the Registrant
shall be liable for any action or failure to act, except in the case of bad
faith, willful misfeasance, gross negligence or reckless disregard of duties to
the Registrant.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted to trustees, officers and controlling
persons of the Registrant pursuant 

<PAGE>

to the foregoing provisions or otherwise, the Registrant has been advised that
in the opinion of the  Securities and Exchange Commission such indemnification
is against public policy as expressed in the Act and is, therefore,
unenforceable.  In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by a trustee, officer, or controlling person of the Registrant in
connection with the successful defense of any action, suit or proceeding) is
asserted against the Registrant by such trustee, officer or controlling person
in connection with the shares being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act, and will
be governed by the final adjudication of such issue.

     The Registrant hereby undertakes that it will apply the indemnification
provision of its by-laws in a manner consistent with Release 11330 of the
Securities and Exchange Commission under the Investment Company Act of 1940, so
long as the interpretation of Sections 17(h) and 17(i) of such Act remains in
effect.

     Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position.  However, in no event will
Registrant maintain insurance to indemnify any such person for any act for which
Registrant itself is not permitted to indemnify him.

Item 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER.

     See "The Fund and Its Management" in the Prospectus regarding the business
of the investment adviser.  The following information is given regarding
officers of Dean Witter InterCapital Inc.  InterCapital is a wholly-owned
subsidiary of Morgan Stanley, Dean Witter, Discover & Co.  The principal address
of the Dean Witter Funds is Two World Trade Center, New York, New York 10048.

     The term "Dean Witter Funds" used below refers to the following registered
investment companies:

CLOSED-END INVESTMENT COMPANIES
 (1) InterCapital Income Securities Inc.
 (2) High Income Advantage Trust
 (3) High Income Advantage Trust II
 (4) High Income Advantage Trust III
 (5) Municipal Income Trust
 (6) Municipal Income Trust II
 (7) Municipal Income Trust III
 (8) Dean Witter Government Income Trust
 (9) Municipal Premium Income Trust
(10) Municipal Income Opportunities Trust
(11) Municipal Income Opportunities Trust II
(12) Municipal Income Opportunities Trust III
(13) Prime Income Trust

<PAGE>

(14) InterCapital Insured Municipal Bond Trust
(15) InterCapital Quality Municipal Income Trust
(16) InterCapital Quality Municipal Investment Trust
(17) InterCapital Insured Municipal Income Trust
(18) InterCapital California Insured Municipal Income Trust
(19) InterCapital Insured Municipal Trust
(20) InterCapital Quality Municipal Securities
(21) InterCapital New York Quality Municipal Securities
(22) InterCapital California Quality Municipal Securities
(23) InterCapital Insured California Municipal Securities 
(24) InterCapital Insured Municipal Securities

OPEN-END INVESTMENT COMPANIES:
 (1) Dean Witter Short-Term Bond Fund
 (2) Dean Witter Tax-Exempt Securities Trust
 (3) Dean Witter Tax-Free Daily Income Trust
 (4) Dean Witter Dividend Growth Securities Inc.
 (5) Dean Witter Convertible Securities Trust
 (6) Dean Witter Liquid Asset Fund Inc.
 (7) Dean Witter Developing Growth Securities Trust
 (8) Dean Witter Retirement Series
 (9) Dean Witter Federal Securities Trust
(10) Dean Witter World Wide Investment Trust
(11) Dean Witter U.S. Government Securities Trust
(12) Dean Witter Select Municipal Reinvestment Fund
(13) Dean Witter High Yield Securities Inc.
(14) Dean Witter Intermediate Income Securities
(15) Dean Witter New York Tax-Free Income Fund
(16) Dean Witter California Tax-Free Income Fund
(17) Dean Witter Health Sciences Trust
(18) Dean Witter California Tax-Free Daily Income Trust
(19) Dean Witter Global Asset Allocation Fund
(20) Dean Witter American Value Fund
(21) Dean Witter Strategist Fund
(22) Dean Witter Utilities Fund
(23) Dean Witter World Wide Income Trust
(24) Dean Witter New York Municipal Money Market Trust
(25) Dean Witter Capital Growth Securities
(26) Dean Witter Precious Metals and Minerals Trust
(27) Dean Witter European Growth Fund Inc.
(28) Dean Witter Global Short-Term Income Fund Inc.
(29) Dean Witter Pacific Growth Fund Inc.
(30) Dean Witter Multi-State Municipal Series Trust
(31) Dean Witter Short-Term U.S. Treasury Trust
(32) Dean Witter Diversified Income Trust
(33) Dean Witter U.S. Government Money Market Trust
(34) Dean Witter Global Dividend Growth Securities
(35) Active Assets California Tax-Free Trust
(36) Dean Witter Natural Resource Development Securities Inc.
(37) Active Assets Government Securities Trust
(38) Active Assets Money Trust

<PAGE>

(39) Active Assets Tax-Free Trust
(40) Dean Witter Limited Term Municipal Trust
(41) Dean Witter Variable Investment Series
(42) Dean Witter Value-Added Market Series
(43) Dean Witter Global Utilities Fund
(44) Dean Witter International SmallCap Fund
(45) Dean Witter Mid-Cap Growth Fund
(46) Dean Witter Select Dimensions Investment Series
(47) Dean Witter Balanced Growth Fund
(48) Dean Witter Balanced Income Fund
(49) Dean Witter Hawaii Municipal Trust
(50) Dean Witter Capital Appreciation Fund
(51) Dean Witter Intermediate Term U.S. Treasury Trust 
(52) Dean Witter Information Fund
(53) Dean Witter Japan Fund
(54) Dean Witter Income Builder Fund
(55) Dean Witter Special Value Fund
(56) Dean Witter Financial Services Trust
(57) Dean Witter Market Leader Trust
(58) Dean Witter S&P 500 Index Fund
(59) Dean Witter Fund of Funds
(60) Morgan Stanley Dean Witter Competitive Edge Fund

The term "TCW/DW Funds" refers to the following registered investment companies:

OPEN-END INVESTMENT COMPANIES
 (1) TCW/DW Core Equity Trust
 (2) TCW/DW North American Government Income Trust
 (3) TCW/DW Latin American Growth Fund
 (4) TCW/DW Income and Growth Fund 
 (5) TCW/DW Small Cap Growth Fund
 (6) TCW/DW Balanced Fund 
 (7) TCW/DW Total Return Trust
 (8) TCW/DW Mid-Cap Equity Trust
 (9) TCW/DW Global Telecom Trust
(10) TCW/DW Strategic Income Trust
(11) TCW/DW Emerging Markets Opportunities Trust


CLOSED-END INVESTMENT COMPANIES
 (1) TCW/DW Term Trust 2000
 (2) TCW/DW Term Trust 2002 
 (3) TCW/DW Term Trust 2003

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Charles A. Fiumefreddo        Executive Vice President and Director of Dean 
Chairman, Chief Executive     Witter Reynolds Inc. ("DWR"); Chairman, Chief
Officer and Director          Executive Officer and Director of Dean Witter
                              Distributors Inc. ("Distributors") and Dean Witter
                              Services Company Inc. ("DWSC"); Chairman and
                              Director of Dean Witter Trust FSB ("DWT");
                              Chairman, Director or Trustee, President and Chief
                              Executive Officer of the Dean Witter Funds and
                              Chairman, Chief Executive Officer and Trustee of
                              the TCW/DW Funds; Director and/or officer of
                              various Morgan Stanley, Dean Witter, Discover &
                              Co. ("MSDWD") subsidiaries.

Philip J. Purcell             Chairman, Chief Executive Officer and Director 
Director                      of MSDWD and DWR; Director of DWSC and
                              Distributors; Director or Trustee of the Dean
                              Witter Funds; Director and/or officer of various
                              MSDWD subsidiaries.

Richard M. DeMartini          President and Chief Operating Officer
Director                      of Dean Witter Capital, a division of DWR;
                              Director of DWR, DWSC, Distributors and DWT;
                              Trustee of the TCW/DW Funds.

James F. Higgins              President and Chief Operating Officer of
Director                      Dean Witter Financial; Director of DWR, DWSC,
                              Distributors and DWT.

Thomas C. Schneider           Executive Vice President and Chief Strategic
Executive Vice                and Administrative Officer of MSDWD; Executive
President, Chief              Vice President and Chief Financial Officer of 
Financial Officer and         DWSC and Distributors; Director of DWR,
Director                      DWSC, Distributors and MSDWD.

Christine A. Edwards          Executive Vice President, Chief Legal Officer
Director                      and Secretary of MSDWD; Executive Vice President,
                              Secretary and Chief Legal Officer of Distributors;
                              Director of DWR, DWSC and Distributors.

Mitchell M. Merin             President and Chief Strategic Officer of DWSC,
President and Chief           Executive Vice President of Distributors; 
Strategic Officer             Executive Vice President and Director of DWT;
                              Executive Vice President and Director of DWR;
                              Director of SPS Transaction Services, Inc. and
                              various other MSDWD subsidiaries

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Robert M. Scanlan             President and Chief Operating Officer of DWSC, 
President and Chief           Executive Vice President of Distributors;
Operating Officer             Executive Vice President and Director of DWT; Vice
                              President of the Dean Witter Funds and the TCW/DW
                              Funds.

Edward C. Oelsner III
Executive Vice President

John B. Van Heuvelen          President, Chief Operating Officer and Director
Executive Vice                of DWT.
President

Joseph J. McAlinden           Vice President of the Dean Witter Funds and
Executive Vice President      Director of DWT.
and Chief Investment
Officer   

Barry Fink                    Assistant Secretary of DWR; Senior Vice President,
Senior Vice President,        Secretary and General Counsel of DWSC; Senior Vice
Secretary and General         President, Assistant Secretary and Assistant 
Counsel                       General Counsel of Distributors; Vice President,
                              Secretary and General Counsel of the Dean Witter
                              Funds and the TCW/DW Funds.


Peter M. Avelar               
Senior Vice President         Vice President of various Dean Witter Funds.

Mark Bavoso                   
Senior Vice President         Vice President of various Dean Witter Funds.

Richard Felegy
Senior Vice President

Edward F. Gaylor              
Senior Vice President         Vice President of various Dean Witter Funds.

Robert S. Giambrone           Senior Vice President of DWSC, Distributors
Senior Vice President         and DWT and Director of DWT; Vice President of the
                              Dean Witter Funds and the TCW/DW Funds. 

Rajesh K. Gupta               
Senior Vice President         Vice President of various Dean Witter Funds.

Kenton J. Hinchliffe          
Senior Vice President         Vice President of various Dean Witter Funds.

Kevin Hurley                  
Senior Vice President         Vice President of various Dean Witter Funds.

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Margaret Iannuzzi
Senior Vice President

Jenny Beth Jones              
Senior Vice President         Vice President of Dean Witter Special Value Fund.

John B. Kemp, III             
Senior Vice President         President of Distributors.

Anita H. Kolleeny             
Senior Vice President         Vice President of various Dean Witter Funds.

Jonathan R. Page              
Senior Vice President         Vice President of various Dean Witter Funds.

Ira N. Ross                   
Senior Vice President         Vice President of various Dean Witter Funds.

Guy G. Rutherfurd, Jr.        Vice President of Dean Witter Market Leader
Senior Vice President         Trust.

Rochelle G. Siegel            
Senior Vice President         Vice President of various Dean Witter Funds.

Jayne M. Stevlingson          
Senior Vice President         Vice President of various Dean Witter Funds.

Paul D. Vance                 
Senior Vice President         Vice President of various Dean Witter Funds.

Elizabeth A. Vetell
Senior Vice President

James F. Willison             
Senior Vice President         Vice President of various Dean Witter Funds.

Ronald J. Worobel             
Senior Vice President         Vice President of various Dean Witter Funds.

Douglas Brown
First Vice President

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Thomas F. Caloia              First Vice President and Assistant Treasurer of
First Vice President          DWSC, Assistant Treasurer of Distributors;
and Assistant                 Treasurer and Chief Financial Officer of the
Treasurer                     Dean Witter Funds and the TCW/DW Funds.

Thomas Chronert
First Vice President

Rosalie Clough
First Vice President

Marilyn K. Cranney            Assistant Secretary of DWR; First Vice President
First Vice President          and Assistant Secretary of DWSC; Assistant
and Assistant Secretary       Secretary of the Dean Witter Funds and the TCW/DW
                              Funds.

Michael Interrante            First Vice President and Controller of DWSC; 
First Vice President          Assistant Treasurer of Distributors; First Vice
and Controller                President and Treasurer of DWT. 

David Johnson
First Vice President

Stanley Kapica
First Vice President

Robert Zimmerman
First Vice President

Dale Albright
Vice President

Joan G. Allman
Vice President

Andrew Arbenz
Vice President

Joseph Arcieri                
Vice President                Vice President of various Dean Witter Funds.

Nancy Belza
Vice President

Maurice Bendrihem
Vice President and Assistant
Controller

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Dale Boettcher
Vice President

Joseph Cardwell
Vice President

Philip Casparius
Vice President

B. Catherine Connelly
Vice President

Salvatore DeSteno             
Vice President                Vice President of DWSC.

Bruce Dunn
Vice President

Jeffrey D. Geffen
Vice President

Michael Geringer
Vice President

Stephen Greenhut
Vice President

Peter W. Gurman
Vice President

Matthew Haynes                Vice President of Dean Witter
Vice President                Variable Investment Series

Peter Hermann                 
Vice President                Vice President of various Dean Witter Funds

Elizabeth Hinchman
Vice President

David Hoffman
Vice President

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Christopher Jones
Vice President

Kevin Jung
Vice President

James P. Kastberg
Vice President

Michelle Kaufman              
Vice President                Vice President of various Dean Witter Funds

Paula LaCosta                 
Vice President                Vice President of various Dean Witter Funds.

Thomas Lawlor
Vice President

Gerard J. Lian                
Vice President                Vice President of various Dean Witter Funds.

Catherine Maniscalco          Vice President of Dean Witter Natural 
Vice President                Resource Development Securities Inc.

Albert McGarity
Vice President

LouAnne D. McInnis            Vice President and Assistant Secretary of DWSC;
Vice President and            Assistant Secretary of the Dean Witter Funds and
Assistant Secretary           the TCW/DW Funds.

Sharon K. Milligan
Vice President

Julie Morrone
Vice President

Mary Beth Mueller
Vice President

David Myers                   Vice President of Dean Witter Natural   
Vice President                Resource Development Securities Inc.

James Nash
Vice President

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Richard Norris
Vice President

Carsten Otto                  Vice President and Assistant Secretary of DWSC;
Vice President and            Assistant Secretary of the Dean Witter Funds and 
Assistant Secretary           the TCW/DW Funds.

George Paoletti
Vice President

Anne Pickrell                 
Vice President                Vice President of various Dean Witter Funds.

Michael Roan
Vice President

John Roscoe
Vice President

Hugh Rose
Vice President

Robert Rossetti               Vice President of Dean Witter Precious Metal and
Vice President                Minerals Trust.

Ruth Rossi                    Vice President and Assistant Secretary of DWSC;
Vice President and            Assistant Secretary of the Dean Witter Funds and
Assistant Secretary           the TCW/DW Funds.

Carl F. Sadler
Vice President

Deborah Santaniello
Vice President

Peter J. Seeley               
Vice President                Vice President of various Dean Witter Funds.

Naomi Stein
Vice President

Kathleen H. Stromberg         
Vice President                Vice President of various Dean Witter Funds.

Marybeth Swisher
Vice President

<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Robert Vanden Assem
Vice President

James P. Wallin
Vice President

Alice Weiss                   
Vice President                Vice President of various Dean Witter Funds.

Item 29.    PRINCIPAL UNDERWRITERS

(a)  Dean Witter Distributors Inc. ("Distributors"), a Delaware corporation, is
     the principal underwriter of the Registrant.  Distributors is also the
     principal underwriter of the following investment companies:

 (1) Dean Witter Liquid Asset Fund Inc.
 (2) Dean Witter Tax-Free Daily Income Trust
 (3) Dean Witter California Tax-Free Daily Income Trust
 (4) Dean Witter Retirement Series
 (5) Dean Witter Dividend Growth Securities Inc.
 (6) Dean Witter Global Asset Allocation
 (7) Dean Witter World Wide Investment Trust
 (8) Dean Witter Capital Growth Securities 
 (9) Dean Witter Convertible Securities Trust
(10) Active Assets Tax-Free Trust
(11) Active Assets Money Trust
(12) Active Assets California Tax-Free Trust
(13) Active Assets Government Securities Trust
(14) Dean Witter Short-Term Bond Fund
(15) Dean Witter Mid-Cap Growth Fund
(16) Dean Witter U.S. Government Securities Trust
(17) Dean Witter High Yield Securities Inc.
(18) Dean Witter New York Tax-Free Income Fund
(19) Dean Witter Tax-Exempt Securities Trust
(20) Dean Witter California Tax-Free Income Fund
(21) Dean Witter Limited Term Municipal Trust
(22) Dean Witter Natural Resource Development Securities Inc.
(23) Dean Witter World Wide Income Trust
(24) Dean Witter Utilities Fund
(25) Dean Witter Strategist Fund
(26) Dean Witter New York Municipal Money Market Trust
(27) Dean Witter Intermediate Income Securities
(28) Prime Income Trust
(29) Dean Witter European Growth Fund Inc.
(30) Dean Witter Developing Growth Securities Trust
(31) Dean Witter Precious Metals and Minerals Trust
(32) Dean Witter Pacific Growth Fund Inc.

<PAGE>

(33) Dean Witter Multi-State Municipal Series Trust
(34) Dean Witter Federal Securities Trust
(35) Dean Witter Short-Term U.S. Treasury Trust
(36) Dean Witter Diversified Income Trust
(37) Dean Witter Health Sciences Trust
(38) Dean Witter Global Dividend Growth Securities
(39) Dean Witter American Value Fund
(40) Dean Witter U.S. Government Money Market Trust
(41) Dean Witter Global Short-Term Income Fund Inc.
(42) Dean Witter Value-Added Market Series
(43) Dean Witter Global Utilities Fund
(44) Dean Witter International SmallCap Fund
(45) Dean Witter Balanced Growth Fund
(46) Dean Witter Balanced Income Fund
(47) Dean Witter Hawaii Municipal Trust
(48) Dean Witter Variable Investment Series
(49) Dean Witter Capital Appreciation Fund
(50) Dean Witter Intermediate Term U.S. Treasury Trust
(51) Dean Witter Information Fund
(52) Dean Witter Japan Fund
(53) Dean Witter Income Builder Fund
(54) Dean Witter Special Value Fund
(55) Dean Witter Financial Services Trust
(56) Dean Witter Market Leader Trust
(57) Dean Witter S&P 500 Index Fund
(58) Dean Witter Fund of Funds
(59) Morgan Stanley Dean Witter Competitive Edge Fund
 (1) TCW/DW Core Equity Trust
 (2) TCW/DW North American Government Income Trust
 (3) TCW/DW Latin American Growth Fund
 (4) TCW/DW Income and Growth Fund
 (5) TCW/DW Small Cap Growth Fund
 (6) TCW/DW Balanced Fund
 (7) TCW/DW Total Return Trust
 (8) TCW/DW Mid-Cap Equity Trust
 (9) TCW/DW Global Telecom Trust 
(10) TCW/DW Strategic Income Trust
(11) TCW/DW Emerging Markets Opportunities Trust

     (b)  The following information is given regarding directors and officers 
     of Distributors not listed in Item 28 above.  The principal address of
     Distributors is Two World Trade Center, New York, New York 10048.  None of
     the following persons has any position or office with the Registrant.

Name                                Positions and Office with Distributors
- ----                                --------------------------------------

Fredrick K. Kubler                  Senior Vice President, Assistant
                                    Secretary and Chief Compliance
                                    Officer.

Michael T. Gregg                    Vice President and Assistant
                                    Secretary.

<PAGE>

Item 30.    LOCATION OF ACCOUNTS AND RECORDS

     All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the Rules thereunder are
maintained by the Investment Manager at its offices, except records relating to
holders of shares issued by the Registrant, which are maintained by the
Registrant's Transfer Agent, at its place of business as shown in the
prospectus.


Item 31.    MANAGEMENT SERVICES

     Registrant is not a party to any such management-related service contract.

Item 32.    UNDERTAKINGS

     Registrant hereby undertakes to furnish each person to whom a prospectus is
delivered with a copy of the Registrant's latest annual report to shareholders,
upon request and without charge.

YH|PARTC.NYMMM.98

<PAGE>

                                      SIGNATURES
     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement pursuant to
Rule 485(b) under the Securities Act of 1933 and has duly caused this
Post-Effective Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York
and State of New York on the 26th day of February, 1998.

               DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST            
                     
                                     By   /s/ Barry Fink        
                                        -----------------------
                                              Barry Fink 
                                       Vice President and Secretary

     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 9 has been signed below by the following persons in
the capacities and on the dates indicated.

     Signatures                    Title                       Date
     ----------                    -----                       ----

(1) Principal Executive Officer    President, Chief 
                                   Executive Officer,
                                   Trustee and Chairman
By  /s/ Charles A. Fiumefreddo                                 2/26/98
    ---------------------------
        Charles A. Fiumefreddo

(2) Principal Financial Officer    Treasurer and Principal
                                   Accounting Officer
                   
By  /s/Thomas F. Caloia                                        2/26/98   
    ---------------------------
       Thomas F. Caloia

(3) Majority of the Trustees  

    Charles A. Fiumefreddo (Chairman)
    Philip J. Purcell
    
By  /s/ Barry Fink                                             2/26/98
    ---------------------------
        Barry Fink    
        Attorney-in-Fact

    Michael Bozic          Manuel H. Johnson
    Edwin J.Garn           Michael E. Nugent
    John R. Haire          John L. Schroeder
    Wayne E. Hedien
                           
By  /s/ David M. Butowsky                                      2/26/98
    ---------------------------
        David M. Butowsky  
        Attorney-in-Fact
<PAGE>

                                    EXHIBIT INDEX

     2.  -   Amended and Restated By-Laws of the Registrant dated as  of October
             23, 1997.
     
     5.  -   Form of Investment Management Agreement between the
             Registrant and Dean Witter InterCapital Inc.
     
     6.  -   Form of Distribution Agreement between the Registrant and Dean
             Witter Distributors Inc.
     
     8.  -   Form of Transfer Agency Agreement between the Registrant and Dean
             Witter Trust FSB
               
     11. -   Consent of Independent Accountants
     
     15. -   Form of Amended and Restated Plan of Distribution between
             Registrant and Dean Witter Distributors Inc.
     
     16. -   Schedule for Computation of Performance Quotations 
     
     27. -   Financial Data Schedule
     
  Other. -   Power of Attorney  
     

<PAGE>

                                    BY-LAWS

                                       OF

               DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST

                  AMENDED AND RESTATED AS OF OCTOBER 23, 1997

                                   ARTICLE I
                                  DEFINITIONS

         The terms "COMMISSION," "DECLARATION," "DISTRIBUTOR," "INVESTMENT
ADVISER," "MAJORITY SHAREHOLDER VOTE," "1940 ACT," "SHAREHOLDER," "SHARES,"
"TRANSFER AGENT," "TRUST," "TRUST PROPERTY," and "TRUSTEES" have the respective
meanings given them in the Declaration of Trust of Dean Witter New York
Municipal Money Market Trust dated December 27, 1989.

                                   ARTICLE II
                                    OFFICES

         SECTION 2.1. PRINCIPAL OFFICE. Until changed by the Trustees, the
principal office of the Trust in the Commonwealth of Massachusetts shall be in
the City of Boston, County of Suffolk.

         SECTION 2.2. OTHER OFFICES. In addition to its principal office in the
Commonwealth of Massachusetts, the Trust may have an office or offices in the
City of New York, State of New York, and at such other places within and
without the Commonwealth as the Trustees may from time to time designate or the
business of the Trust may require.

                                  ARTICLE III
                             SHAREHOLDERS' MEETINGS

         SECTION 3.1. PLACE OF MEETINGS. Meetings of Shareholders shall be held
at such place, within or without the Commonwealth of Massachusetts, as may be
designated from time to time by the Trustees.

         SECTION 3.2. MEETINGS. Meetings of Shareholders of the Trust shall be
held whenever called by the Trustees or the President of the Trust and whenever
election of a Trustee or Trustees by Shareholders is required by the provisions
of Section 16(a) of the 1940 Act, for that purpose. Meetings of Shareholders
shall also be called by the Secretary upon the written request of the holders
of Shares entitled to vote not less than twenty-five percent (25%) of all the
votes entitled to be cast at such meeting, except to the extent otherwise
required by Section 16(c) of the 1940 Act, as made applicable to the Trust by
the provisions of Section 2.3 of the Declaration, the Secretary shall inform
such Shareholders of the reasonable estimated cost of preparing and mailing
such notice of the meeting, and upon payment to the Trust of such costs, the
Secretary shall give notice stating the purpose or purposes of the meeting to
all entitled to vote at such meeting. No meeting need be called upon the
request of the holders of Shares entitled to cast less than a majority of all
votes entitled to be cast at such meeting, to consider any matter which is
substantially the same as a matter voted upon at any meeting of Shareholders
held during the preceding twelve months.

         SECTION 3.3. NOTICE OF MEETINGS. Written or printed notice of every
Shareholders' meeting stating the place, date, and purpose or purposes thereof,
shall be given by the Secretary not less than ten (10) nor more than ninety
(90) days before such meeting to each Shareholder entitled to vote at such
meeting. Such notice shall be deemed to be given when deposited in the United
States mail, postage prepaid, directed to the Shareholder at his address as it
appears on the records of the Trust.

         SECTION 3.4. QUORUM AND ADJOURNMENT OF MEETINGS. Except as otherwise
provided by law, by the Declaration or by these By-Laws, at all meetings of
Shareholders, the holders of a majority of the Shares issued and outstanding
and entitled to vote thereat, present in person or represented by proxy, shall
be requisite and shall constitute a quorum for the transaction of business. In
the absence of a quorum, the 

<PAGE>

Shareholders present or represented by proxy and entitled to vote thereat 
shall have the power to adjourn the meeting from time to time. The 
Shareholders present in person or represented by proxy at any meeting and 
entitled to vote thereat also shall have the power to adjourn the meeting 
from time to time if the vote required to approve or reject any proposal 
described in the original notice of such meeting is not obtained (with 
proxies being voted for or against adjournment consistent with the votes for 
and against the proposal for which the required vote has not been obtained). 
The affirmative vote of the holders of a majority of the Shares then present 
in person or represented by proxy shall be required to adjourn any meeting. 
Any adjourned meeting may be reconvened without further notice or change in 
record date. At any reconvened meeting at which a quorum shall be present, 
any business may be transacted that might have been transacted at the meeting 
as originally called.

         SECTION 3.5. VOTING RIGHTS, PROXIES. At each meeting of Shareholders,
each holder of record of Shares entitled to vote thereat shall be entitled to
one vote in person or by proxy, executed in writing by the Shareholder or his
duly authorized attorney-in-fact, for each Share of beneficial interest of the
Trust and for the fractional portion of one vote for each fractional Share
entitled to vote so registered in his name on the records of the Trust on the
date fixed as the record date for the determination of Shareholders entitled to
vote at such meeting. No proxy shall be valid after eleven months from its
date, unless otherwise provided in the proxy. At all meetings of Shareholders,
unless the voting is conducted by inspectors, all questions relating to the
qualification of voters and the validity of proxies and the acceptance or
rejection of votes shall be decided by the chairman of the meeting. Pursuant to
a resolution of a majority of the Trustees, proxies may be solicited in the
name of one or more Trustees or Officers of the Trust.

         SECTION 3.6. VOTE REQUIRED. Except as otherwise provided by law, by
the Declaration of Trust, or by these By-Laws, at each meeting of Shareholders
at which a quorum is present, all matters shall be decided by Majority
Shareholder Vote.

         SECTION 3.7. INSPECTORS OF ELECTION. In advance of any meeting of
Shareholders, the Trustees may appoint Inspectors of Election to act at the
meeting or any adjournment thereof. If Inspectors of Election are not so
appointed, the chairman of any meeting of Shareholders may, and on the request
of any Shareholder or his proxy shall, appoint Inspectors of Election of the
meeting. In case any person appointed as Inspector fails to appear or fails or
refuses to act, the vacancy may be filled by appointment made by the Trustees
in advance of the convening of the meeting or at the meeting by the person
acting as chairman. The Inspectors of Election shall determine the number of
Shares outstanding, the Shares represented at the meeting, the existence of a
quorum, the authenticity, validity and effect of proxies, shall receive votes,
ballots or consents, shall hear and determine all challenges and questions in
any way arising in connection with the right to vote, shall count and tabulate
all votes or consents, determine the results, and do such other acts as may be
proper to conduct the election or vote with fairness to all Shareholders. On
request of the chairman of the meeting, or of any Shareholder or his proxy, the
Inspectors of Election shall make a report in writing of any challenge or
question or matter determined by them and shall execute a certificate of any
facts found by them.

         SECTION 3.8. INSPECTION OF BOOKS AND RECORDS. Shareholders shall have
such rights and procedures of inspection of the books and records of the Trust
as are granted to Shareholders under the Corporations and Associations Law of
the State of Maryland.

         SECTION 3.9. ACTION BY SHAREHOLDERS WITHOUT MEETING. Except as
otherwise provided by law, the provisions of these By-Laws relating to notices
and meetings to the contrary notwithstanding, any action required or permitted
to be taken at any meeting of Shareholders may be taken without a meeting if a
majority of the Shareholders entitled to vote upon the action consent to the
action in writing and such consents are filed with the records of the Trust.
Such consent shall be treated for all purposes as a vote taken at a meeting of
Shareholders.

         SECTION 3.10. PRESENCE AT MEETINGS. Presence at meetings of
shareholders requires physical attendance by the shareholder or his or her
proxy at the meeting site and does not encompass attendance by telephonic or
other electronic means.


                                       2
<PAGE>

                                   ARTICLE IV
                                    TRUSTEES

         SECTION 4.1. MEETINGS OF THE TRUSTEES. The Trustees may in their
discretion provide for regular or special meetings of the Trustees. Regular
meetings of the Trustees may be held at such time and place as shall be
determined from time to time by the Trustees without further notice. Special
meetings of the Trustees may be called at any time by the President and shall
be called by the President or the Secretary upon the written request of any two
(2) Trustees.

         SECTION 4.2. NOTICE OF SPECIAL MEETINGS. Written notice of special
meetings of the Trustees, stating the place, date and time thereof, shall be
given not less than two (2) days before such meeting to each Trustee,
personally, by telegram, by mail, or by leaving such notice at his place of
residence or usual place of business. If mailed, such notice shall be deemed to
be given when deposited in the United States mail, postage prepaid, directed to
the Trustee at his address as it appears on the records of the Trust. Subject
to the provisions of the 1940 Act, notice or waiver of notice need not specify
the purpose of any special meeting.

         SECTION 4.3. TELEPHONE MEETINGS. Subject to the provisions of the 1940
Act, any Trustee, or any member or members of any committee designated by the
Trustees, may participate in a meeting of the Trustees, or any such committee,
as the case may be, by means of a conference telephone or similar
communications equipment if all persons participating in the meeting can hear
each other at the same time. Participation in a meeting by these means
constitutes presence in person at the meeting.

         SECTION 4.4. QUORUM, VOTING AND ADJOURNMENT OF MEETINGS. At all
meetings of the Trustees, a majority of the Trustees shall be requisite to and
shall constitute a quorum for the transaction of business. If a quorum is
present, the affirmative vote of a majority of the Trustees present shall be
the act of the Trustees, unless the concurrence of a greater proportion is
expressly required for such action by law, the Declaration or these By-Laws. If
at any meeting of the Trustees there be less than a quorum present, the
Trustees present thereat may adjourn the meeting from time to time, without
notice other than announcement at the meeting, until a quorum shall have been
obtained.

         SECTION 4.5. ACTION BY TRUSTEES WITHOUT MEETING. The provisions of
these By-Laws covering notices and meetings to the contrary notwithstanding,
and except as required by law, any action required or permitted to be taken at
any meeting of the Trustees may be taken without a meeting if a consent in
writing setting forth the action shall be signed by all of the Trustees
entitled to vote upon the action and such written consent is filed with the
minutes of proceedings of the Trustees.

         SECTION 4.6. EXPENSES AND FEES. Each Trustee may be allowed expenses,
if any, for attendance at each regular or special meeting of the Trustees, and
each Trustee who is not an officer or employee of the Trust or of its
investment manager or underwriter or of any corporate affiliate of any of said
persons shall receive for services rendered as a Trustee of the Trust such
compensation as may be fixed by the Trustees. Nothing herein contained shall be
construed to preclude any Trustee from serving the Trust in any other capacity
and receiving compensation therefor.

         SECTION 4.7. EXECUTION OF INSTRUMENTS AND DOCUMENTS AND SIGNING OF
CHECKS AND OTHER OBLIGATIONS AND TRANSFERS. All instruments, documents and
other papers shall be executed in the name and on behalf of the Trust and all
checks, notes, drafts and other obligations for the payment of money by the
Trust shall be signed, and all transfer of securities standing in the name of
the Trust shall be executed, by the Chairman, the President, any Vice President
or the Treasurer or by any one or more officers or agents of the Trust as shall
be designated for that purpose by vote of the Trustees; notwithstanding the
above, nothing in this Section 4.7 shall be deemed to preclude the electronic
authorization, by designated persons, of the Trust's Custodian (as described
herein in Section 9.1) to transfer assets of the Trust, as provided for herein
in Section 9.1.


         SECTION 4.8. INDEMNIFICATION OF TRUSTEES, OFFICERS, EMPLOYEES AND
AGENTS. (a) The Trust shall indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending, or completed action,
suit or proceeding, whether civil, criminal, administrative or investigative


                                       3
<PAGE>

(other than an action by or in the right of the Trust) by reason of the fact
that he is or was a Trustee, officer, employee, or agent of the Trust. The
indemnification shall be against expenses, including attorneys' fees,
judgments, fines, and amounts paid in settlement, actually and reasonably
incurred by him in connection with the action, suit, or proceeding, if he acted
in good faith and in a manner he reasonably believed to be in or not opposed to
the best interests of the Trust, and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his conduct was unlawful. The
termination of any action, suit or proceeding by judgment, order, settlement,
conviction, or upon a plea of nolo contendere or its equivalent, shall not, of
itself, create a presumption that the person did not act in good faith and in a
manner which he reasonably believed to be in or not opposed to the best
interests of the Trust, and, with respect to any criminal action or proceeding,
had reasonable cause to believe that his conduct was unlawful.

         (b) The Trust shall indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action or
suit by or on behalf of the Trust to obtain a judgment or decree in its favor
by reason of the fact that he is or was a Trustee, officer, employee, or agent
of the Trust. The indemnification shall be against expenses, including
attorneys' fees actually and reasonably incurred by him in connection with the
defense or settlement of the action or suit, if he acted in good faith and in a
manner he reasonably believed to be in or not opposed to the best interests of
the Trust; except that no indemnification shall be made in respect of any
claim, issue, or matter as to which the person has been adjudged to be liable
for negligence or misconduct in the performance of his duty to the Trust,
except to the extent that the court in which the action or suit was brought, or
a court of equity in the county in which the Trust has its principal office,
determines upon application that, despite the adjudication of liability but in
view of all circumstances of the case, the person is fairly and reasonably
entitled to indemnity for those expenses which the court shall deem proper,
provided such Trustee, officer, employee or agent is not adjudged to be liable
by reason of his willful misfeasance, bad faith, gross negligence or reckless
disregard of the duties involved in the conduct of his office.

         (c) To the extent that a Trustee, officer, employee, or agent of the
Trust has been successful on the merits or otherwise in defense of any action,
suit or proceeding referred to in subsection (a) or (b) or in defense of any
claim, issue or matter therein, he shall be indemnified against expenses,
including attorneys' fees, actually and reasonably incurred by him in
connection therewith.

         (d) (1) Unless a court orders otherwise, any indemnification under
subsections (a) or (b) of this section may be made by the Trust only as
authorized in the specific case after a determination that indemnification of
the Trustee, officer, employee, or agent is proper in the circumstances because
he has met the applicable standard of conduct set forth in subsections (a) or
(b).

             (2) The determination shall be made:

                (i) By the Trustees, by a majority vote of a quorum which 
         consists of Trustees who were not parties to the action, suit or 
         proceeding; or

               (ii) If the required quorum is not obtainable, or if a quorum 
         of disinterested Trustees so directs, by independent legal counsel in a
         written opinion; or

              (iii) By the Shareholders.

             (3) Notwithstanding any provision of this Section 4.8, no person 
         shall be entitled to indemnification for any liability, whether or not 
         there is an adjudication of liability, arising by reason of willful 
         misfeasance, bad faith, gross negligence, or reckless disregard of 
         duties as described in Section 17(h) and (i) of the Investment Company 
         Act of 1940 ("disabling conduct"). A person shall be deemed not liable 
         by reason of disabling conduct if, either:

               (i) a final decision on the merits is made by a court or other
         body before whom the proceeding was brought that the person to be 
         indemnified ("indemnitee") was not liable by reason of disabling 
         conduct; or

              (ii) in the absence of such a decision, a reasonable
         determination, based upon a review of the facts, that the indemnitee
         was not liable by reason of disabling conduct, is made by either--


                                       4
<PAGE>

              (A) a majority of a quorum of Trustees who are neither "interested
         persons" of the Trust, as defined in Section 2(a)(19) of the
         Investment Company Act of 1940, nor parties to the action, suit or
         proceeding, or

              (B) an independent legal counsel in a written opinion.

         (e) Expenses, including attorneys' fees, incurred by a Trustee,
officer, employee or agent of the Trust in defending a civil or criminal
action, suit or proceeding may be paid by the Trust in advance of the final
disposition thereof if:

            (1) authorized in the specific case by the Trustees; and

            (2) the Trust receives an undertaking by or on behalf of the
Trustee, officer, employee or agent of the Trust to repay the advance if it is
not ultimately determined that such person is entitled to be indemnified by the
Trust; and

            (3) either, (i) such person provides a security for his 
undertaking, or

              (ii) the Trust is insured against losses by reason of any lawful
         advances, or

             (iii) a determination, based on a review of readily available 
         facts, that there is reason to believe that such person ultimately will
         be found entitled to indemnification, is made by either--

               (A) a majority of a quorum which consists of Trustees who are n
         either "interested persons" of the Trust, as defined in Section 2(a)
         (19) of the 1940 Act, nor parties to the action, suit or proceeding, or

               (B) an independent legal counsel in a written opinion.

         (f) The indemnification provided by this Section shall not be deemed
exclusive of any other rights to which a person may be entitled under any
by-law, agreement, vote of Shareholders or disinterested Trustees or otherwise,
both as to action in his official capacity and as to action in another capacity
while holding the office, and shall continue as to a person who has ceased to
be a Trustee, officer, employee, or agent and inure to the benefit of the
heirs, executors and administrators of such person; provided that no person may
satisfy any right of indemnity or reimbursement granted herein or to which he
may be otherwise entitled except out of the property of the Trust, and no
Shareholder shall be personally liable with respect to any claim for indemnity
or reimbursement or otherwise.

         (g) The Trust may purchase and maintain insurance on behalf of any
person who is or was a Trustee, officer, employee, or agent of the Trust,
against any liability asserted against him and incurred by him in any such
capacity, or arising out of his status as such. However, in no event will the
Trust purchase insurance to indemnify any officer or Trustee against liability
for any act for which the Trust itself is not permitted to indemnify him.

         (h) Nothing contained in this Section shall be construed to protect
any Trustee or officer of the Trust against any liability to the Trust or to
its security holders to which he would otherwise be subject by reason of
willful misfeasance, bad faith, gross negligence or reckless disregard of the
duties involved in the conduct of his office.

                                   ARTICLE V
                                   COMMITTEES

         SECTION 5.1. EXECUTIVE AND OTHER COMMITTEES. The Trustees, by
resolution adopted by a majority of the Trustees, may designate an Executive
Committee and/or committees, each committee to consist of two (2) or more of
the Trustees of the Trust and may delegate to such committees, in the intervals
between meetings of the Trustees, any or all of the powers of the Trustees in
the management of the business and affairs of the Trust. In the absence of any
member of any such committee, the members thereof present at any meeting,
whether or not they constitute a quorum, may appoint a Trustee to act in place
of such absent member. Each such committee shall keep a record of its
proceedings.


                                       5
<PAGE>

         The Executive Committee and any other committee shall fix its own
rules or procedure, but the presence of at least fifty percent (50%) of the
members of the whole committee shall in each case be necessary to constitute a
quorum of the committee and the affirmative vote of the majority of the members
of the committee present at the meeting shall be necessary to take action.

         All actions of the Executive Committee shall be reported to the
Trustees at the meeting thereof next succeeding to the taking of such action.

         SECTION 5.2. ADVISORY COMMITTEE. The Trustees may appoint an advisory
committee which shall be composed of persons who do not serve the Trust in any
other capacity and which shall have advisory functions with respect to the
investments of the Trust but which shall have no power to determine that any
security or other investment shall be purchased, sold or otherwise disposed of
by the Trust. The number of persons constituting any such advisory committee
shall be determined from time to time by the Trustees. The members of any such
advisory committee may receive compensation for their services and may be
allowed such fees and expenses for the attendance at meetings as the Trustees
may from time to time determine to be appropriate.

         SECTION 5.3. COMMITTEE ACTION WITHOUT MEETING. The provisions of these
By-Laws covering notices and meetings to the contrary notwithstanding, and
except as required by law, any action required or permitted to be taken at any
meeting of any Committee of the Trustees appointed pursuant to Section 5.1 of
these By-Laws may be taken without a meeting if a consent in writing setting
forth the action shall be signed by all members of the Committee entitled to
vote upon the action and such written consent is filed with the records of the
proceedings of the Committee.

                                   ARTICLE VI
                                    OFFICERS

         SECTION 6.1. EXECUTIVE OFFICERS. The executive officers of the Trust
shall be a Chairman, a President, one or more Vice Presidents, a Secretary and
a Treasurer. The Chairman shall be selected from among the Trustees but none of
the other executive officers need be a Trustee. Two or more offices, except
those of President and any Vice President, may be held by the same person, but
no officer shall execute, acknowledge or verify any instrument in more than one
capacity. The executive officers of the Trust shall be elected annually by the
Trustees and each executive officer so elected shall hold office until his
successor is elected and has qualified.

         SECTION 6.2. OTHER OFFICERS AND AGENTS. The Trustees may also elect
one or more Assistant Vice Presidents, Assistant Secretaries and Assistant
Treasurers and may elect, or may delegate to the President the power to
appoint, such other officers and agents as the Trustees shall at any time or
from time to time deem advisable.

         SECTION 6.3. TERM AND REMOVAL AND VACANCIES. Each officer of the Trust
shall hold office until his successor is elected and has qualified. Any officer
or agent of the Trust may be removed by the Trustees whenever, in their
judgment, the best interests of the Trust will be served thereby, but such
removal shall be without prejudice to the contractual rights, if any, of the
person so removed.

         SECTION 6.4. COMPENSATION OF OFFICERS. The compensation of officers
and agents of the Trust shall be fixed by the Trustees, or by the President to
the extent provided by the Trustees with respect to officers appointed by the
President.

         SECTION 6.5. POWER AND DUTIES. All officers and agents of the Trust,
as between themselves and the Trust, shall have such authority and perform such
duties in the management of the Trust as may be provided in or pursuant to
these By-Laws, or to the extent not so provided, as may be prescribed by the
Trustees; provided, that no rights of any third party shall be affected or
impaired by any such By-Law or resolution of the Trustees unless he has
knowledge thereof.

         SECTION 6.6. THE CHAIRMAN. (a) The Chairman shall preside at all
meetings of the Shareholders and of the Trustees, shall be a signatory on all
Annual and Semi-Annual Reports as may be sent to shareholders, and he shall
perform such other duties as the Trustees may from time to time prescribe.


                                       6
<PAGE>

         SECTION 6.7. THE PRESIDENT. (a) The President shall be the chief
executive officer of the Trust; he shall have general and active management of
the business of the Trust, shall see that all orders and resolutions of the
Trustees are carried into effect, and in connection therewith, shall be
authorized to delegate to one or more Vice Presidents such of his powers and
duties at such times and in such manner as he may deem advisable.

         (b) In the absence of the Chairman, the President shall preside at all
meetings of the shareholders and the Board of Trustees; and he shall perform
such other duties as the Board of Trustees may from time to time prescribe.

         SECTION 6.8. THE VICE PRESIDENTS. The Vice Presidents shall be of such
number and shall have such titles as may be determined from time to time by the
Trustees. The Vice President, or, if there be more than one, the Vice
Presidents in the order of their seniority as may be determined from time to
time by the Trustees or the President, shall, in the absence or disability of
the President, exercise the powers and perform the duties of the President, and
he or they shall perform such other duties as the Trustees or the President may
from time to time prescribe.

         SECTION 6.9. THE ASSISTANT VICE PRESIDENTS. The Assistant Vice
President, or, if there be more than one, the Assistant Vice Presidents, shall
perform such duties and have such powers as may be assigned them from time to
time by the Trustees or the President.

         SECTION 6.10. THE SECRETARY. The Secretary shall attend all meetings
of the Trustees and all meetings of the Shareholders and record all the
proceedings of the meetings of the Shareholders and of the Trustees in a book
to be kept for that purpose, and shall perform like duties for the standing
committees when required. He shall give, or cause to be given, notice of all
meetings of the Shareholders and special meetings of the Trustees, and shall
perform such other duties and have such powers as the Trustees, or the
President, may from time to time prescribe. He shall keep in safe custody the
seal of the Trust and affix or cause the same to be affixed to any instrument
requiring it, and, when so affixed, it shall be attested by his signature or by
the signature of an Assistant Secretary.

         SECTION 6.11. THE ASSISTANT SECRETARIES. The Assistant Secretary, or,
if there be more than one, the Assistant Secretaries in the order determined by
the Trustees or the President, shall, in the absence or disability of the
Secretary, perform the duties and exercise the powers of the Secretary and
shall perform such duties and have such other powers as the Trustees or the
President may from time to time prescribe.

         SECTION 6.12. THE TREASURER. The Treasurer shall be the chief
financial officer of the Trust. He shall keep or cause to be kept full and
accurate accounts of receipts and disbursements in books belonging to the
Trust, and he shall render to the Trustees and the President, whenever any of
them require it, an account of his transactions as Treasurer and of the
financial condition of the Trust; and he shall perform such other duties as the
Trustees, or the President, may from time to time prescribe.

         SECTION 6.13. THE ASSISTANT TREASURERS. The Assistant Treasurer, or,
if there shall be more than one, the Assistant Treasurers in the order
determined by the Trustees or the President, shall, in the absence or
disability of the Treasurer, perform the duties and exercise the powers of the
Treasurer and shall perform such other duties and have such other powers as the
Trustees, or the President, may from time to time prescribe.

         SECTION 6.14. DELEGATION OF DUTIES. Whenever an officer is absent or
disabled, or whenever for any reason the Trustees may deem it desirable, the
Trustees may delegate the powers and duties of an officer or officers to any
other officer or officers or to any Trustee or Trustees.

                                  ARTICLE VII
                          DIVIDENDS AND DISTRIBUTIONS

         Subject to any applicable provisions of law and the Declaration,
dividends and distributions upon the Shares may be declared at such intervals
as the Trustees may determine, in cash, in securities or other property, or in
Shares, from any sources permitted by law, all as the Trustees shall from time
to time determine.


                                       7
<PAGE>

         Inasmuch as the computation of net income and net profits from the
sales of securities or other properties for federal income tax purposes may
vary from the computation thereof on the records of the Trust, the Trustees
shall have power, in their discretion, to distribute as income dividends and as
capital gain distributions, respectively, amounts sufficient to enable the
Trust to avoid or reduce liability for federal income taxes.

                                  ARTICLE VIII
                             CERTIFICATES OF SHARES

         SECTION 8.1. CERTIFICATES OF SHARES. Certificates for Shares of each
series or class of Shares shall be in such form and of such design as the
Trustees shall approve, subject to the right of the Trustees to change such
form and design at any time or from time to time, and shall be entered in the
records of the Trust as they are issued. Each such certificate shall bear a
distinguishing number; shall exhibit the holders' name and certify the number
of full Shares owned by such holder; shall be signed by or in the name of the
Trust by the President, or a Vice President, and countersigned by the Secretary
or an Assistant Secretary or the Treasurer and an Assistant Treasurer of the
Trust; shall be sealed with the seal; and shall contain such recitals as may be
required by law. Where any certificate is signed by a Transfer Agent or by a
Registrar, the signature of such officers and the seal may be facsimile,
printed or engraved. The Trust may, at its option, determine not to issue a
certificate or certificates to evidence Shares owned of record by any
Shareholder.

         In case any officer or officers who shall have signed, or whose
facsimile signature or signatures shall appear on, any such certificate or
certificates shall cease to be such officer or officers of the Trust, whether
because of death, resignation or otherwise, before such certificate or
certificates shall have been delivered by the Trust, such certificate or
certificates shall, nevertheless, be adopted by the Trust and be issued and
delivered as though the person or persons who signed such certificate or
certificates or whose facsimile signature or signatures shall appear therein
had not ceased to be such officer or officers of the Trust.

         No certificate shall be issued for any share until such share is fully
paid.

         SECTION 8.2. LOST, STOLEN, DESTROYED AND MUTILATED CERTIFICATES. The
Trustees may direct a new certificate or certificates to be issued in place of
any certificate or certificates theretofore issued by the Trust alleged to have
been lost, stolen or destroyed, upon satisfactory proof of such loss, theft, or
destruction; and the Trustees may, in their discretion, require the owner of
the lost, stolen or destroyed certificate, or his legal representative, to give
to the Trust and to such Registrar, Transfer Agent and/or Transfer Clerk as may
be authorized or required to countersign such new certificate or certificates,
a bond in such sum and of such type as they may direct, and with such surety or
sureties, as they may direct, as indemnity against any claim that may be
against them or any of them on account of or in connection with the alleged
loss, theft or destruction of any such certificate.

                                   ARTICLE IX
                                   CUSTODIAN

         SECTION 9.1. APPOINTMENT AND DUTIES. The Trust shall at times employ a
bank or trust company having capital, surplus and undivided profits of at least
five million dollars ($5,000,000) as custodian with authority as its agent, but
subject to such restrictions, limitations and other requirements, if any, as
may be contained in these By-Laws and the 1940 Act:

         (1) to receive and hold the securities owned by the Trust and deliver
     the same upon written or electronically transmitted order;

         (2) to receive and receipt for any moneys due to the Trust and deposit
     the same in its own banking department or elsewhere as the Trustees may 
     direct;

         (3) to disburse such funds upon orders or vouchers;


                                       8
<PAGE>

all upon such basis of compensation as may be agreed upon between the 
Trustees and the custodian. If so directed by a Majority Shareholder Vote, 
the custodian shall deliver and pay over all property of the Trust held by it 
as specified in such vote.

         The Trustees may also authorize the custodian to employ one or more
sub-custodians from time to time to perform such of the acts and services of
the custodian and upon such terms and conditions as may be agreed upon between
the custodian and such sub-custodian and approved by the Trustees.

         SECTION 9.2. CENTRAL CERTIFICATE SYSTEM. Subject to such rules,
regulations and orders as the Commission may adopt, the Trustees may direct the
custodian to deposit all or any part of the securities owned by the Trust in a
system for the central handling of securities established by a national
securities exchange or a national securities association registered with the
Commission under the Securities Exchange Act of 1934, or such other person as
may be permitted by the Commission, or otherwise in accordance with the 1940
Act, pursuant to which system all securities of any particular class or series
of any issuer deposited within the system are treated as fungible and may be
transferred or pledged by bookkeeping entry without physical delivery of such
securities, provided that all such deposits shall be subject to withdrawal only
upon the order of the Trust.

                                   ARTICLE X
                                WAIVER OF NOTICE

         Whenever any notice of the time, place or purpose of any meeting of
Shareholders, Trustees, or of any committee is required to be given in
accordance with law or under the provisions of the Declaration or these
By-Laws, a waiver thereof in writing, signed by the person or persons entitled
to such notice and filed with the records of the meeting, whether before or
after the holding thereof, or actual attendance at the meeting of shareholders,
Trustees or committee, as the case may be, in person, shall be deemed
equivalent to the giving of such notice to such person.

                                   ARTICLE XI
                                 MISCELLANEOUS

         SECTION 11.1. LOCATION OF BOOKS AND RECORDS. The books and records of
the Trust may be kept outside the Commonwealth of Massachusetts at such place
or places as the Trustees may from time to time determine, except as otherwise
required by law.

         SECTION 11.2. RECORD DATE. The Trustees may fix in advance a date as
the record date for the purpose of determining the Shareholders entitled to (i)
receive notice of, or to vote at, any meeting of Shareholders, or (ii) receive
payment of any dividend or the allotment of any rights, or in order to make a
determination of Shareholders for any other proper purpose. The record date, in
any case, shall not be more than one hundred eighty (180) days, and in the case
of a meeting of Shareholders not less than ten (10) days, prior to the date on
which such meeting is to be held or the date on which such other particular
action requiring determination of Shareholders is to be taken, as the case may
be. In the case of a meeting of Shareholders, the meeting date set forth in the
notice to Shareholders accompanying the proxy statement shall be the date used
for purposes of calculating the 180 day or 10 day period, and any adjourned
meeting may be reconvened without a change in record date. In lieu of fixing a
record date, the Trustees may provide that the transfer books shall be closed
for a stated period but not to exceed, in any case, twenty (20) days. If the
transfer books are closed for the purpose of determining Shareholders entitled
to notice of a vote at a meeting of Shareholders, such books shall be closed
for at least ten (10) days immediately preceding the meeting.

         SECTION 11.3. SEAL. The Trustees shall adopt a seal, which shall be in
such form and shall have such inscription thereon as the Trustees may from time
to time provide. The seal of the Trust may be affixed to any document, and the
seal and its attestation may be lithographed, engraved or otherwise printed on
any document with the same force and effect as if it had been imprinted and
attested manually in the same manner and with the same effect as if done by a
Massachusetts business corporation under Massachusetts law.


                                       9
<PAGE>

         SECTION 11.4. FISCAL YEAR. The fiscal year of the Trust shall end on
such date as the Trustees may by resolution specify, and the Trustees may by
resolution change such date for future fiscal years at any time and from time
to time.

         SECTION 11.5. ORDERS FOR PAYMENT OF MONEY. All orders or instructions
for the payment of money of the Trust, and all notes or other evidences of
indebtedness issued in the name of the Trust, shall be signed by such officer
or officers or such other person or persons as the Trustees may from time to
time designate, or as may be specified in or pursuant to the agreement between
the Trust and the bank or trust company appointed as Custodian of the
securities and funds of the Trust.

                                  ARTICLE XII
                      COMPLIANCE WITH FEDERAL REGULATIONS

         The Trustees are hereby empowered to take such action as they may deem
to be necessary, desirable or appropriate so that the Trust is or shall be in
compliance with any federal or state statute, rule or regulation with which
compliance by the Trust is required.

                                  ARTICLE XIII
                                   AMENDMENTS

         These By-Laws may be amended, altered, or repealed, or new By-Laws may
be adopted, (a) by a Majority Shareholder Vote, or (b) by the Trustees;
provided, however, that no By-Law may be amended, adopted or repealed by the
Trustees if such amendment, adoption or repeal requires, pursuant to law, the
Declaration, or these By-Laws, a vote of the Shareholders. The Trustees shall
in no event adopt By-Laws which are in conflict with the Declaration, and any
apparent inconsistency shall be construed in favor of the related provisions in
the Declaration.

                                  ARTICLE XIV
                              DECLARATION OF TRUST


         The Declaration of Trust establishing Dean Witter New York Municipal
Money Market Trust, dated December 27, 1989, a copy of which is on file in the
office of the Secretary of the Commonwealth of Massachusetts, provides that the
name Dean Witter New York Municipal Money Market Trust refers to the Trustees
under the Declaration collectively as Trustees, but not as individuals or
personally; and no Trustee, Shareholder, officer, employee or agent of Dean
Witter New York Municipal Money Market Trust shall be held to any personal
liability, nor shall resort be had to their private property for the
satisfaction of any obligation or claim or otherwise, in connection with the
affairs of said Dean Witter New York Municipal Money Market Trust, but the
Trust Estate only shall be liable.




<PAGE>
                        INVESTMENT MANAGEMENT AGREEMENT
 
    AGREEMENT made as of the 31st day of May, 1997 by and between Dean Witter
New York Municipal Money Market Trust, an unincorporated business trust
organized under the laws of the Commonwealth of Massachusetts (hereinafter
called the "Fund"), and Dean Witter InterCapital Inc., a Delaware corporation
(hereinafter called the "Investment Manager"):
 
    WHEREAS, The Fund is engaged in business as an open-end management
investment company and is registered as such under the Investment Company Act of
1940, as amended (the "Act"); and
 
    WHEREAS, The Investment Manager is registered as an investment adviser under
the Investment Advisers Act of 1940, and engages in the business of acting as
investment adviser; and
 
    WHEREAS, The Fund desires to retain the Investment Manager to render
management and investment advisory services in the manner and on the terms and
conditions hereinafter set forth; and
 
    WHEREAS, The Investment Manager desires to be retained to perform services
on said terms and conditions:
 
    Now, Therefore, this Agreement
 
                              W I T N E S S E T H:
 
that in consideration of the premises and the mutual covenants hereinafter
contained, the Fund and the Investment Manager agree as follows:
 
     1. The Fund hereby retains the Investment Manager to act as investment
manager of the Fund and, subject to the supervision of the Trustees, to
supervise the investment activities of the Fund as hereinafter set forth.
Without limiting the generality of the foregoing, the Investment Manager shall
obtain and evaluate such information and advice relating to the economy,
securities markets and securities as it deems necessary or useful to discharge
its duties hereunder; shall continuously manage the assets of the Fund in a
manner consistent with the investment objectives and policies of the Fund; shall
determine the securities to be purchased, sold or otherwise disposed of by the
Fund and the timing of such purchases, sales and dispositions; and shall take
such further action, including the placing of purchase and sale orders on behalf
of the Fund, as the Investment Manager shall deem necessary or appropriate. The
Investment Manager shall also furnish to or place at the disposal of the Fund
such of the information, evaluations, analyses and opinions formulated or
obtained by the Investment Manager in the discharge of its duties as the Fund
may, from time to time, reasonably request.
 
     2. The Investment Manager shall, at its own expense, maintain such staff
and employ or retain such personnel and consult with such other persons as it
shall from time to time determine to be necessary or useful to the performance
of its obligations under this Agreement. Without limiting the generality of the
foregoing, the staff and personnel of the Investment Manager shall be deemed to
include persons employed or otherwise retained by the Investment Manager to
furnish statistical and other factual data, advice regarding economic factors
and trends, information with respect to technical and scientific developments,
and such other information, advice and assistance as the Investment Manager may
desire. The Investment Manager shall, as agent for the Fund, maintain the Fund's
records and books of account (other than those maintained by the Fund's transfer
agent, registrar, custodian and other agents). All such books and records so
maintained shall be the property of the Fund and, upon request therefor, the
Investment Manager shall surrender to the Fund such of the books and records so
requested.
 
     3. The Fund will, from time to time, furnish or otherwise make available to
the Investment Manager such financial reports, proxy statements and other
information relating to the business and affairs of the Fund as the Investment
Manager may reasonably require in order to discharge its duties and obligations
hereunder.
 
     4. The Investment Manager shall bear the cost of rendering the investment
management and supervisory services to be performed by it under this Agreement,
and shall, at its own expense, pay the compensation of the officers and
employees, if any, of the Fund, and provide such office space and equipment and
such clerical and bookkeeping services as the Fund shall reasonably require in
the conduct
 
97NYC6345

<PAGE>

of its business, including the pricing of Fund shares, and preparation of
prospectuses, proxy statements and reports required to be filed with Federal and
state securities commissions (except insofar as the participation or assistance
of independent accountants and attorneys is, in the opinion of the Investment
Manager, necessary or desirable). The Investment Manager shall also bear the
cost of telephone service, heat, light, power and other utilities provided to
the Fund, and the cost of printing (in excess of costs borne by the Fund) and
distributing prospectuses and supplements thereto of the Fund used for sales
purposes.
 
     5. The Fund assumes and shall pay or cause to be paid all other expenses of
the Fund, including without limitation: the charges and expenses of any
registrar, any custodian or depository appointed by the Fund for the safekeeping
of its cash, portfolio securities and other property, and any stock transfer or
dividend agent or agents appointed by the Fund; brokers' commissions chargeable
to the Fund in connection with portfolio securities transactions to which the
Fund is a party; all taxes, including securities issuance and transfer taxes,
and fees payable by the Fund to Federal, State or other governmental agencies;
the cost and expense of engraving or printing share certificates representing
shares of the Fund; all costs and expenses in connection with the registration
and maintenance of registration of the Fund and its shares with the Securities
and Exchange Commission and various states and other jurisdictions (including
filing fees and legal fees and disbursements of counsel); the cost and expense
of printing (including typesetting) and distributing prospectuses of the Fund
and supplements thereto to the Fund's shareholders; all expenses of
shareholders' and Trustees' meetings and of preparing, printing and mailing
proxy statements and reports to shareholders and prospective shareholders; fees
and travel expenses of Trustees or members of any advisory board or committee
who are not employees of the Investment Manager or any corporate affiliate of
the Investment Manager; all expenses incident to the payment of any dividend,
distribution, withdrawal or redemption, whether in shares or in cash; charges
and expenses of legal counsel and independent accountants in connection with any
matter relating to the Fund (not including compensation or expenses of attorneys
employed by the Investment Manager); membership dues of the Investment Company
Institute; interest payable on Fund borrowings; postage; insurance premiums on
property or personnel (including officers and Trustees) of the Fund which inure
to its benefit; extraordinary expenses (including but not limited to legal
claims and liabilities and litigation costs and any indemnification related
thereto); and all other charges and costs of the Fund's operation unless
otherwise explicitly provided herein.
 
     6. For the services to be rendered, the facilities furnished, and the
expenses assumed by the Investment Manager, the Fund shall pay to the Investment
Manager monthly compensation determined by applying the following annual rates
to the Fund's daily net assets: 0.50% of the portion of the daily net assets not
exceeding $500 million; 0.425% of the portion of the daily net assets exceeding
$500 million but not exceeding $750 million; 0.375% of the portion of the daily
net assets exceeding $750 million but not exceeding $1 billion; 0.35% of the
portion of the daily net assets exceeding $1 billion but not exceeding $1.5
billion; 0.325% of the portion of the daily net assets exceeding $1.5 billion
but not exceeding $2 billion; 0.30% of the portion of the daily net assets
exceeding $2 billion but not exceeding $2.5 billion; 0.275% of the portion of
the daily net assets exceeding $2.5 billion but not exceeding $3 billion; and
0.25% of the portion of the daily net assets exceeding $3 billion. Except as
hereinafter set forth, compensation under this Agreement shall be calculated and
accrued daily and the amounts of the daily accruals shall be paid monthly. Such
calculations shall be made by applying 1/365ths of the annual rates to the
Fund's net assets each day determined as of the close of business on that day or
the last previous business day. If this Agreement becomes effective subsequent
to the first day of a month or shall terminate before the last day of a month,
compensation for that part of the month this Agreement is in effect shall be
prorated in a manner consistent with the calculation of the fees as set forth
above. Subject to the provisions of paragraph 7 hereof, payment of the
Investment Manager's compensation for the preceding month shall be made as
promptly as possible after completion of the computation contemplated by
paragraph 7 hereof.
 
     7. In the event the operating expenses of the Fund, including amounts
payable to the Investment Manager pursuant to paragraph 6 hereof, for any fiscal
year ending on a date on which this Agreement is in effect, exceed the expense
limitations applicable to the Fund imposed by state securities laws or
regulations thereunder, as such limitations may be raised or lowered from time
to time, the Investment Manager shall reduce its management fee to the extent of
such excess and, if required, pursuant to any such laws or regulations, will
reimburse the Fund for annual operating expenses in excess of any expense
 
                                       2
<PAGE>

limitation that may be applicable; provided, however, there shall be excluded
from such expenses the amount of any interest, taxes, brokerage commissions and
extraordinary expenses (to the extent permitted by state securities laws or
regulations thereunder) paid or payable by the Fund. Such reduction, if any,
shall be computed and accrued daily, shall be settled on a monthly basis, and
shall be based upon the expense limitation applicable to the Fund as at the end
of the last business day of the month. Should two or more such expense
limitations be applicable as at the end of the last business day of the month,
that expense limitation which results in the largest reduction in the Investment
Manager's fee shall be applicable.
 
    For purposes of this provision, should any applicable expense limitation be
based upon the gross income of the Fund, such gross income shall include, but
not be limited to, interest on debt of fixed income securities in the Fund's
portfolio accrued to and including the last day of the Fund's fiscal year, and
dividends declared but not paid on any equity securities in the Fund's
portfolio, the record dates for which fall on or prior to the last day of such
fiscal year, but shall not include gains from the sales of securities.
 
     8. The Investment Manager will use its best efforts in the supervision and
management of the investment activities of the Fund, but in the absence of
willful misfeasance, bad faith, gross negligence or reckless disregard of its
obligations hereunder, the Investment Manager shall not be liable to the Fund or
any of its investors for any error of judgment or mistake of law or for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors.
 
     9. Nothing contained in this Agreement shall prevent the Investment Manager
or any affiliated person of the Investment Manager from acting as investment
adviser or manager for any other person, firm or corporation and shall not in
any way bind or restrict the Investment Manager or any such affiliated person
from buying, selling or trading any securities or commodities for their own
accounts or for the account of others for whom they may be acting. Nothing in
this Agreement shall limit or restrict the right of any director, officer or
employee of the Investment Manager to engage in any other business or to devote
his or her time and attention in part to the management or other aspects of any
other business whether of a similar or dissimilar nature.
 
    10. This Agreement shall remain in effect until April 30, 1999 and from year
to year thereafter provided such continuance is approved at least annually by
the vote of holders of a majority (as defined in the Act) of the outstanding
voting securities of the Fund or by the Board of Trustees of the Fund; provided
that in either event such continuance is also approved annually by the vote of a
majority of the Trustees of the Fund who are not parties to this Agreement or
"interested persons" (as defined in the Act) of any such party, which vote must
be cast in person at a meeting called for the purpose of voting on such
approval; provided, however, that (a) the Fund may, at any time and without the
payment of any penalty, terminate this Agreement upon thirty days' written
notice to the Investment Manager, either by majority vote of the Board of
Trustees of the Fund or by the vote of a majority of the outstanding voting
securities of the Fund; (b) this Agreement shall immediately terminate in the
event of its assignment (within the meaning of the Act) unless such automatic
termination shall be prevented by an exemptive order of the Securities and
Exchange Commission; and (c) the Investment Manager may terminate this Agreement
without payment of penalty on thirty days' written notice to the Fund. Any
notice under this Agreement shall be given in writing, addressed and delivered,
or mailed post-paid, to the other party at the principal office of such party.
 
    11. This Agreement may be amended by the parties without the vote or consent
of shareholders of the Fund to supply any omission, to cure, correct or
supplement any ambiguous, defective or inconsistent provision hereof, or if they
deem it necessary to conform this Agreement to the requirements of applicable
federal laws or regulations, but neither the Fund nor the Investment Manager
shall be liable for failing to do so.
 
    12. This Agreement shall be construed in accordance with the law of the
State of New York and the applicable provisions of the Act. To the extent the
applicable law of the State of New York, or any of the provisions herein,
conflicts with the applicable provisions of the Act, the latter shall control.
 
    13. The Investment Manager and the Fund each agree that the name "Dean
Witter," which comprises a component of the Fund's name, is a property right of
Dean Witter Reynolds Inc. The Fund agrees and consents that (i) it will only use
the name "Dean Witter" as a component of its name and for no other purpose, (ii)
it will not purport to grant to any third party the right to use the name "Dean
Witter" for any purpose, (iii) the Investment Manager or its parent, Morgan
Stanley, Dean Witter, Discover & Co., or any corporate affiliate of

 
                                       3
<PAGE>

the Investment Manager's parent, may use or grant to others the right to use the
name "Dean Witter," or any combination or abbreviation thereof, as all or a
portion of a corporate or business name or for any commercial purpose, including
a grant of such right to any other investment company, (iv) at the request of
the Investment Manager or its parent, the Fund will take such action as may be
required to provide its consent to the use of the name "Dean Witter," or any
combination or abbreviation thereof, by the Investment Manager or its parent or
any corporate affiliate of the Investment Manager's parent, or by any person to
whom the Investment Manager or its parent or any corporate affiliate of the
Investment Manager's parent shall have granted the right to such use, and (v)
upon the termination of any investment advisory agreement into which the
Investment Manager and the Fund may enter, or upon termination of affiliation of
the Investment Manager with its parent, the Fund shall, upon request by the
Investment Manager or its parent, cease to use the name "Dean Witter" as a
component of its name, and shall not use the name, or any combination or
abbreviation thereof, as a part of its name or for any other commercial purpose,
and shall cause its officers, Trustees and shareholders to take any and all
actions which the Investment Manager or its parent may request to effect the
foregoing and to reconvey to the Investment Manager or its parent any and all
rights to such name.
 
    14. The Declaration of Trust establishing Dean Witter New York Municipal
Money Market Trust, dated December 28, 1989, a copy of which, together with all
amendments thereto (the "Declaration"), is on file in the office of the
Secretary of the Commonwealth of Massachusetts, provides that the name Dean
Witter New York Municipal Money Market Trust refers to the Trustees under the
Declaration collectively as Trustees, but not as individuals or personally; and
no Trustee, shareholder, officer, employee or agent of Dean Witter New York
Municipal Money Market Trust shall be held to any personal liability, nor shall
resort be had to their private property for the satisfaction of any obligation
or claim or otherwise, in connection with the affairs of said Dean Witter New
York Municipal Money Market Trust, but the Trust Estate only shall be liable.
 
    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement on the day and year first above written in New York, New York.
 
                                    DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET
                                     TRUST

                                    By:
                                       ----------------------------------
Attest:

 ----------------------------------
 
                                    DEAN WITTER INTERCAPITAL INC.
 
                                    By:
                                       ----------------------------------
 
Attest:
 
 ----------------------------------

 
                                       4

<PAGE>

                  DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST

                               DISTRIBUTION AGREEMENT

   AGREEMENT made as of this 31st day of May, 1997 between Dean Witter New 
York Municipal Money Market Trust, an unincorporated business trust organized 
under the laws of the Commonwealth of Massachusetts (the "Fund"), and Dean 
Witter Distributors Inc., a Delaware corporation (the "Distributor");

                                W I T N E S S E T H:

   WHEREAS, the Fund is registered under the Investment Company Act of 1940, 
as amended (the "1940 Act"), as a non-diversified open-end investment company 
and it is in the interest of the Fund to offer its shares for sale 
continuously, and

   WHEREAS, the Fund and the Distributor wish to enter into an agreement with 
each other with respect to the continuous offering of the Fund's transferable 
shares of beneficial interest, of $.01 par value (the "Shares"), in order to 
promote the growth of the Fund and facilitate the distribution of its Shares.

   NOW, THEREFORE, the parties agree as follows:

   SECTION 1. APPOINTMENT OF THE DISTRIBUTOR. (a) The Fund hereby appoints 
the Distributor as the principal underwriter of the Fund to sell Shares to 
the public on the terms set forth in this Agreement and the Fund's prospectus 
and the Distributor hereby accepts such appointment and agrees to act 
hereunder. The Fund, during the term of this Agreement, shall sell Shares to 
the Distributor upon the terms and conditions set forth herein.

   (b) The Distributor agrees to purchase Shares, as principal for its own 
account, from the Fund and to sell Shares as principal to investors and 
securities dealers, including Dean Witter Reynolds Inc. ("DWR"), an affiliate 
of the Distributor, upon the terms described herein and in the Fund's 
prospectus (the "Prospectus") and statement of additional information 
included in the Fund's registration statement (the "Registration Statement") 
most recently filed from time to time with the Securities and Exchange 
Commission (the "SEC") and effective under the Securities Act of 1933, as 
amended (the "1933 Act") and 1940 Act or as said Prospectus may be otherwise 
amended or supplemented and filed with the SEC pursuant to Rule 497 under the 
1933 Act.

   SECTION 2. EXCLUSIVE NATURE OF DUTIES. The Distributor shall be the 
exclusive principal underwriter and distributor of the Fund, except that the 
exclusive rights granted to the Distributor to sell the Shares shall not 
apply to Shares issued by the Fund: (i) in connection with the merger or 
consolidation of any other investment company or personal holding company 
with the Fund or the acquisition by purchase or otherwise of all (or 
substantially all) the assets or the outstanding shares of any such company 
by the Fund; or (ii) pursuant to reinvestment of dividends or capital gains 
distributions; or (iii) pursuant to the reinstatement privilege afforded 
redeeming shareholders.

   SECTION 3. PURCHASE OF SHARES FROM THE FUND. (a) The Distributor shall 
have the right to buy from the Fund the Shares needed, but not more than the 
Shares needed (except for clerical errors in transmission), to fill 
unconditional orders for Shares placed with the Distributor by investors and 
securities dealers. The price which the Distributor shall pay for the Shares 
so purchased from the Fund shall be the net asset value, determined as set 
forth in the Prospectus, used in determining the public offering price on 
which such orders were based.

   (b) The Shares are to be resold by the Distributor at the public offering 
price, as set forth in the Prospectus, to investors or to securities dealers, 
including DWR, having selected dealer agreements with the Distributor 
pursuant to Section 7 ("Selected Dealers").

   (c) The Fund shall have the right to suspend the sale of the Shares at 
times when redemption is suspended pursuant to the conditions set forth in 
Section 4(e) hereof. The Fund shall also have the right


                                1

<PAGE>

to suspend the sale of the Shares if trading on the New York Stock Exchange 
shall have been suspended, if a banking moratorium shall have been declared 
by federal or New York authorities, or if there shall have been some other 
extraordinary event which, in the judgment of the Fund, makes it 
impracticable to sell the Shares.

   (d) The Fund, or any agent of the Fund designated in writing by the Fund, 
shall be promptly advised of all purchase orders for Shares received by the 
Distributor. Any order may be rejected by the Fund; provided, however, that 
the Fund will not arbitrarily or without reasonable cause refuse to accept 
orders for the purchase of Shares. The Distributor will confirm orders upon 
their receipt, and the Fund (or its agent) upon receipt of payment therefor 
and instructions will deliver share certificates for such Shares or a 
statement confirming the issuance of Shares. Payment shall be made to the 
Fund in New York Clearing House funds. The Distributor agrees to cause such 
payment and such instructions to be delivered promptly to the Fund (or its 
agent).

   (e) With respect to Shares sold by any Selected Dealer, the Distributor is 
authorized to direct the Fund's transfer agent to receive instructions 
directly from the Selected Dealer on behalf of the Distributor as to 
registration of Shares in the names of investors and to confirm issuance of 
the Shares to such investors. The Distributor is also authorized to instruct 
the transfer agent to receive payment directly from the Selected Dealer on 
behalf of the Distributor, for prompt transmittal to the Fund's custodian, of 
the purchase price of the Shares. In such event the Distributor shall obtain 
from the Selected Dealer and maintain a record of such registration 
instructions and payments.

   SECTION 4. REPURCHASE OR REDEMPTION OF SHARES. (a) Any of the outstanding 
Shares may be tendered for redemption at any time, and the Fund agrees to 
redeem the Shares so tendered in accordance with the applicable provisions 
set forth in the Prospectus. The price to be paid to redeem the Shares shall 
be equal to the net asset value determined as set forth in the Prospectus. 
All payments by the Fund hereunder shall be made in the manner set forth 
below.

   The proceeds of any redemption of Shares shall be paid by the Fund to the 
redeeming shareholders, in each case in accordance with applicable provisions 
of the Prospectus in New York Clearing House funds.

   (b) The Distributor is authorized, as agent for the Fund, to repurchase 
Shares, represented by a share certificate which is delivered to any office 
of the Distributor in accordance with applicable provisions set forth in the 
Prospectus. The Distributor shall promptly transmit to the transfer agent of 
the Fund for redemption all Shares so delivered. The Distributor shall be 
responsible for the accuracy of instructions transmitted to the Fund's 
transfer agent in connection with all such repurchases.

   (c) The Distributor is authorized, as agent for the Fund, to repurchase 
Shares held in a shareholder's account with the Fund for which no share 
certificate has been issued, upon the telephonic or telegraphic request of 
the shareholder, or at the discretion of the Distributor. The Distributor 
shall promptly transmit to the transfer agent of the Fund, for redemption, 
all such orders for repurchase of Shares. Payment for Shares repurchased may 
be made by the Fund to the Distributor for the account of the shareholder. 
The Distributor shall be responsible for the accuracy of instructions 
transmitted to the Fund's transfer agent in connection with all such 
repurchases.

   (d) With respect to Shares tendered for redemption or repurchase by any 
Selected Dealer on behalf of its customers, the Distributor is authorized to 
instruct the transfer agent of the Fund to accept orders for redemption or 
repurchase directly from the Selected Dealer on behalf of the Distributor and 
to instruct the Fund to transmit payments for such redemptions and 
repurchases directly to the Selected Dealer on behalf of the Distributor for 
the account of the shareholder. The Distributor shall obtain from the 
Selected Dealer, and shall maintain, a record of such orders. The Distributor 
is further authorized to obtain from the Fund, and shall maintain, a record 
of payments made directly to the Selected Dealer on behalf of the Distributor.

   (e) Redemption of Shares or payment by the Fund may be suspended at times 
when the New York Stock Exchange is closed, when trading on said Exchange is 
restricted, when an emergency exists as a result of which disposal by the 
Fund of securities owned by it is not reasonably practicable or it is not 
reasonably practicable for the Fund fairly to determine the value of its net 
assets, or during any other period when the SEC, by order, so permits.


                                2

<PAGE>

   SECTION 5. DUTIES OF THE FUND. (a) The Fund shall furnish to the 
Distributor copies of all information, financial statements and other papers 
which the Distributor may reasonably request for use in connection with the 
distribution of the Shares, including one certified copy, upon request by the 
Distributor, of all financial statements prepared by the Fund and examined by 
independent accountants. The Fund shall, at the expense of the Distributor, 
make available to the Distributor such number of copies of the prospectus as 
the Distributor shall reasonably request.

   (b) The Fund shall take, from time to time, but subject to the necessary 
approval of its shareholders, all necessary action to register Shares under 
the 1933 Act, to the end that there will be available for sale such number of 
Shares as investors may reasonably be expected to purchase.

   (c) The Fund shall use its best efforts to pay the filing fees for an 
appropriate number of the Shares for sale under the securities laws of such 
states as the Distributor and the Fund may approve. Any qualification to sell 
Shares in a state may be withheld, terminated or withdrawn by the Fund at any 
time in its discretion. As provided in Section 8(c) hereof, such filing fees 
shall be borne by the Fund. The Distributor shall furnish any information and 
other material relating to its affairs and activities as may be required by 
the Fund in connection with the sale of its Shares in any state.

   (d) The Fund shall, at the expense of the Distributor, furnish, in 
reasonable quantities upon request by the Distributor, copies of annual and 
interim reports of the Fund.

   SECTION 6. DUTIES OF THE DISTRIBUTOR. (a) The Distributor shall sell 
Shares of the Fund through DWR and may sell Shares through other securities 
dealers and its own Account Executives and shall devote reasonable time and 
effort to promote sales of Shares, but shall not be obligated to sell any 
specific number of Shares. The services of the Distributor hereunder are not 
exclusive and it is understood that the Distributor may act as principal 
underwriter for other registered investment companies so long as the 
performance of its obligations hereunder is not impaired thereby. It is also 
understood that Selected Dealers, including DWR, may also sell shares for 
other registered investment companies.

   (b) Neither the Distributor nor any Selected Dealers shall give any 
information or make any representations, other than those contained in the 
Registration Statement or related Prospectus and any sales literature 
specifically approved by the Fund.

   (c) The Distributor agrees that it will comply with the applicable terms 
and limitations of the Rules of the Association of the National Association 
of Securities Dealers, Inc. ("NASD").

   SECTION 7. SELECTED DEALERS AGREEMENTS. (a) The Distributor shall have the 
right to enter into selected dealers agreements with Selected Dealers for the 
sale of Shares. In making agreements with Selected Dealers, the Distributor 
shall act only as principal and not as agent for the Fund. Shares sold to 
Selected Dealers shall be for resale by such dealers only at the public 
offering price set forth in the Prospectus.

   (b) Within the United States, the Distributor shall offer and sell Shares 
only to Selected Dealers that are members in good standing of the NASD.

   (c) The Distributor shall adopt and follow procedures, as approved by the 
Fund, for the confirmation of sales of Shares to investors and Selected 
Dealers, the collection of amounts payable by investors and Selected Dealers 
on such sales, and the cancellation of unsettled transactions, as may be 
necessary to comply with the requirements of the NASD, as such requirements 
may from time to time exist.

   SECTION 8. PAYMENT OF EXPENSES. (a) The Distributor shall bear all 
expenses incurred by it in connection with its duties and activities under 
this Agreement, including the payment to Selected Dealers of any service fees 
and other expenses for sales of the Fund's Shares (except such expenses as 
are specifically undertaken herein by the Fund) incurred or paid by Selected 
Dealers, including DWR. The Distributor shall bear the costs and expenses of 
preparing, printing and distributing any supplementary sales literature used 
by the Distributor or furnished by it for use by Selected Dealers in 
connection with the offering of the Shares for sale. Any expenses of 
advertising incurred in connection with such offering will also be the 
obligation of the Distributor. It is understood and agreed that, so long as 
the Fund's Plan of Distribution pursuant to Rule 12b-1 (the "Rule 12b-1 
Plan") continues in effect, any expenses incurred by the Distributor 
hereunder may be paid in accordance with the terms of such Rule 12b-1 Plan.


                                3

<PAGE>

   (b) The Fund shall bear all costs and expenses of the Fund, including fees 
and disbursements of legal counsel including counsel to the Trustees of the 
Fund who are not interested persons (as defined in the 1940 Act) of the Fund 
or the Distributor, and independent accountants, in connection with the 
preparation and filing of any required Registration Statements and 
Prospectuses and all amendments and supplements thereto, and the expenses of 
preparing, printing, mailing and otherwise distributing prospectuses and 
statements of additional information, annual or interim reports or proxy 
materials to shareholders.

   (c) The Fund shall pay the filing fees and, if necessary or advisable in 
connection therewith, bear the cost and expense of qualifying the Fund as a 
broker or dealer, in such states of the United States or other jurisdictions 
as shall be selected by the Fund and the Distributor pursuant to Section 5(c) 
hereof and the cost and expenses payable to each such state for continuing to 
offer Shares therein until the Fund decides to discontinue selling Shares 
pursuant to Section 5(c) hereof.

   SECTION 9. INDEMNIFICATION. (a) The Fund shall indemnify and hold harmless 
the Distributor and each person, if any, who controls the Distributor against 
any loss, liability, claim, damage or expense (including the reasonable cost 
of investigating or defending any alleged loss, liability, claim, damage or 
expense and reasonable counsel fees incurred in connection therewith), 
arising by reason of any person acquiring any Shares, which may be based upon 
the 1933 Act, or on any other statute or at common law, on the ground that 
the Registration Statement or related Prospectus as from time to time may be 
amended and supplemented, or the annual or interim reports to shareholders of 
the Fund, includes an untrue statement of a material fact or omits to state a 
material fact required to be stated therein or necessary in order to make the 
statements therein not misleading, unless such statement or omission was made 
in reliance upon, and in conformity with, information furnished to the Fund 
in connection therewith by or on behalf of the Distributor; provided, 
however, that in no case (i) is the indemnity of the Fund in favor of the 
Distributor and any such controlling persons to be deemed to protect the 
Distributor or any such controlling persons thereof against any liability to 
the Fund or its security holders to which the Distributor or any such 
controlling persons would otherwise be subject by reason of willful 
misfeasance, bad faith or gross negligence in the performance of its duties 
or by reason of reckless disregard of its obligations and duties under this 
Agreement; or (ii) is the Fund to be liable under its indemnity agreement 
contained in this paragraph with respect to any claim made against the 
Distributor or any such controlling persons, unless the Distributor or such 
controlling persons, as the case may be, shall have notified the Fund in 
writing within a reasonable time after the summons or other first legal 
process giving information of the nature of the claim shall have been served 
upon the Distributor or such controlling persons (or after the Distributor or 
such controlling persons shall have received notice of such service on any 
designated agent), but failure to notify the Fund of any such claim shall not 
relieve it from any liability which it may have to the person against whom 
such action is brought otherwise than on account of its indemnity agreement 
contained in this paragraph. The Fund will be entitled to participate at its 
own expense in the defense or if it so elects, to assume the defense, of any 
suit brought to enforce any such liability, but if the Fund elects to assume 
the defense, such defense shall be conducted by counsel chosen by it and 
satisfactory to the Distributor or such controlling person or persons, 
defendant or defendants in the suit. In the event the Fund elects to assume 
the defense of any such suit and retain such counsel, the Distributor or such 
controlling person or persons, defendant or defendants in the suit, shall 
bear the fees and expenses of any additional counsel retained by them, but, 
in case the Fund does not elect to assume the defense of any such suit, it 
will reimburse the Distributor or such controlling person or persons, 
defendant or defendants in the suit, for the reasonable fees and expenses of 
any counsel retained by them. The Fund shall promptly notify the Distributor 
of the commencement of any litigation or proceedings against it or any of its 
officers or trustees in connection with the issuance or sale of the Shares.

   (b) (i) The Distributor shall indemnify and hold harmless the Fund and 
each of its Trustees and officers and each person, if any, who controls the 
Fund against any loss, liability, claim, damage, or expense described in the 
foregoing indemnity contained in subsection (a) of this Section, but only 
with respect to statements or omissions made in reliance upon, and in 
conformity with, information furnished to the Fund in writing by or on behalf 
of the Distributor for use in connection with the Registration Statement or 
related Prospectus, as from time to time amended, or the annual or interim 
reports to shareholders.


                                4

<PAGE>

   (ii) The Distributor shall indemnify and hold harmless the Fund and the 
Fund's transfer agent, individually and in its capacity as the Fund's 
transfer agent, from and against any claims, damages and liabilities which 
arise as a result of actions taken pursuant to instructions from, or on 
behalf of the Distributor to: (1) redeem all or a part of shareholder 
accounts in the Fund pursuant to Section 4 hereof and pay the proceeds to the 
Distributor for the account of each shareholder whose Shares are so redeemed; 
and (2) register Shares in the names of investors, confirm the issuance 
thereof and receive payment therefor pursuant to Section 3(e).

   (iii) In case any action shall be brought against the Fund or any person 
so indemnified by this subsection 9(b) in respect of which indemnity may be 
sought against the Distributor, the Distributor shall have the rights and 
duties given to the Fund, and the Fund and each person so indemnified shall 
have the rights and duties given to the Distributor by the provisions of 
subsection (a) of this Section 9.

   (c) If the indemnification provided for in this Section 9 is unavailable 
or insufficient to hold harmless an indemnified party under subsection (a) or 
(b) above in respect of any losses, claims, damages, liabilities or expenses 
(or actions in respect thereof) referred to herein, then each indemnifying 
party shall contribute to the amount paid or payable by such indemnified 
party as a result of such losses, claims, damages, liabilities or expenses 
(or actions in respect thereof) in such proportion as is appropriate to 
reflect the relative benefits received by the Fund on the one hand and the 
Distributor on the other from the offering of the Shares. If, however, the 
allocation provided by the immediately preceding sentence is not permitted by 
applicable law, then each indemnifying party shall contribute to such amount 
paid or payable by such indemnified party in such proportion as is 
appropriate to reflect not only such relative benefits but also the relative 
fault of the Fund on the one hand and the Distributor on the other in 
connection with the statements or omissions which resulted in such losses, 
claims, damages, liabilities or expenses (or actions in respect thereof), as 
well as any other relevant equitable considerations. The relative benefits 
received by the Fund on the one hand and the Distributor on the other shall 
be deemed to be in the same proportion as the total net proceeds from the 
offering (before deducting expenses) received by the Fund bear to the total 
compensation received by the Distributor, in each case as set forth in the 
Prospectus. The relative fault shall be determined by reference to, among 
other things, whether the untrue or alleged untrue statement of a material 
fact or the omission or alleged omission to state a material fact relates to 
information supplied by the Fund or the Distributor and the parties' relative 
intent, knowledge, access to information and opportunity to correct or 
prevent such statement or omission. The Fund and the Distributor agree that 
it would not be just and equitable if contribution were determined by pro 
rata allocation or by any other method of allocation which does not take into 
account the equitable considerations referred to above. The amount paid or 
payable by an indemnified party as a result of the losses, claims, damages, 
liabilities or expenses (or actions in respect thereof) referred to above 
shall be deemed to include any legal or other expenses reasonably incurred by 
such indemnified party in connection with investigating or defending any such 
claim. Notwithstanding the provisions of this subsection (c), the Distributor 
shall not be required to contribute any amount in excess of the amount by 
which the total price at which the Shares distributed by it to the public 
were offered to the public exceeds the amount of any damages which it has 
otherwise been required to pay by reason of such untrue or alleged untrue 
statement or omission or alleged omission. No person guilty of fraudulent 
misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall 
be entitled to contribution from any person who was not guilty of such 
fraudulent misrepresentation.

   SECTION 10. DURATION AND TERMINATION OF THIS AGREEMENT. This Agreement 
shall become effective as of the date first above written and shall remain in 
force until April 30, 1998 and thereafter, but only so long as such 
continuance is specifically approved at least annually by (i) the Trustees of 
the Fund, or by the vote of a majority of the outstanding voting securities 
of the Fund, cast in person or by proxy, and (ii) a majority of those 
Trustees who are not parties to this Agreement or interested persons of any 
such party and who have no direct or indirect financial interest in this 
Agreement or in the operation of the Fund's Rule 12b-1 Plan or in any 
agreement related thereto, cast in person at a meeting called for the purpose 
of voting upon such approval.

   This Agreement may be terminated at any time, without the payment of any 
penalty, by the Trustees of the Fund, by a majority of the Trustees of the 
Fund who are not interested persons of the Fund and


                                5

<PAGE>

who have no direct or indirect financial interest in this Agreement or by 
vote of a majority of the outstanding voting securities of the Fund, or by 
the Distributor, on sixty days' written notice to the other party. This 
Agreement shall automatically terminate in the event of its assignment.

   The terms "vote of a majority of the outstanding voting securities," 
"assignment" and "interested person," when used in this Agreement, shall have 
the respective meanings specified in the 1940 Act.

   SECTION 11. AMENDMENTS OF THIS AGREEMENT. This Agreement may be amended by 
the parties only if such amendment is specifically approved by (i) the 
Trustees of the Fund, or by the vote of a majority of outstanding voting 
securities of the Fund, and (ii) a majority of those Trustees of the Fund who 
are not parties to this Agreement or interested persons of any such party and 
who have no direct or indirect financial interest in this Agreement or in any 
Agreement related to the Fund's Rule 12b-1 Plan, cast in person at a meeting 
called for the purpose of voting on such approval.

   SECTION 12. GOVERNING LAW. This Agreement shall be construed in accordance 
with the law of the State of New York and the applicable provisions of the 
1940 Act. To the extent that the applicable law of the State of New York, or 
any of the provisions herein, conflict with the applicable provisions of the 
1940 Act, the latter shall control.

   SECTION 13. PERSONAL LIABILITY. The Declaration of the Trust establishing 
Dean Witter New York Municipal Money Market Trust, dated December 28, 1989, a 
copy of which, together with all amendments thereto (the "Declaration"), is 
on file in the office of the Secretary of the Commonwealth of Massachusetts, 
provides that the name Dean Witter New York Municipal Money Market Trust 
refers to the Trustees under the Declaration collectively as Trustees, but 
not as individuals or personally; and no Trustee, shareholder, officer, 
employee or agent of Dean Witter New York Municipal Money Market Trust shall 
be held to any personal liability, nor shall resort be had to their private 
property for the satisfaction of any obligation or claim or otherwise, in 
connection with the affairs of said Dean Witter New York Municipal Money 
Market Trust, but the Trust Estate only shall be liable.

   IN WITNESS WHEREOF, the parties hereto have executed and delivered this 
Agreement as of the day and year first above written in New York, New York.

                                          DEAN WITTER NEW YORK
                                          MUNICIPAL MONEY MARKET TRUST

                                          By:  ........................

                                          DEAN WITTER DISTRIBUTORS INC.

                                          By:  ........................


                                6

<PAGE>
                              AMENDED AND RESTATED
                     TRANSFER AGENCY AND SERVICE AGREEMENT
 
                                      WITH
 
                             DEAN WITTER TRUST FSB
 
[open-end funds]
 
97NYC13142
<PAGE>
                               TABLE OF CONTENTS
 

                                                                      PAGE
                                                                      ----

Article 1    Terms of Appointment...................................    1
 
Article 2    Fees and Expenses......................................    2
 
Article 3    Representations and Warranties of DWTFSB...............    3
 
Article 4    Representations and Warranties of the Fund.............    3
 
Article 5    Duty of Care and Indemnification.......................    3
 
Article 6    Documents and Covenants of the Fund and DWTFSB.........    4
 
Article 7    Duration and Termination of Agreement..................    5
 
Article 8    Assignment.............................................    5
 
Article 9    Affiliations...........................................    6
 
Article 10   Amendment..............................................    6
 
Article 11   Applicable Law.........................................    6
 
Article 12   Miscellaneous..........................................    6
 
Article 13   Merger of Agreement....................................    7
 
Article 14   Personal Liability.....................................    7

 
                                       i
<PAGE>
           AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT
 
    AMENDED AND RESTATED AGREEMENT made as of the 23rd day of October, 1997 by
and between each of the Funds listed on the signature pages hereof, each of such
Funds acting severally on its own behalf and not jointly with any of such other
Funds (each such Fund hereinafter referred to as the "Fund"), each such Fund
having its principal office and place of business at Two World Trade Center, New
York, New York, 10048, and DEAN WITTER TRUST FSB ("DWTFSB"), a federally
chartered savings bank, having its principal office and place of business at
Harborside Financial Center, Plaza Two, Jersey City, New Jersey 07311.
 
    WHEREAS, the Fund desires to appoint DWTFSB as its transfer agent, dividend
disbursing agent and shareholder servicing agent and DWTFSB desires to accept
such appointment;
 
    NOW THEREFORE, in consideration of the mutual covenants herein contained,
the parties hereto agree as follows:
 
Article 1  TERMS OF APPOINTMENT; DUTIES OF DWTFSB
 
    1.1 Subject to the terms and conditions set forth in this Agreement, the
Fund hereby employs and appoints DWTFSB to act as, and DWTFSB agrees to act as,
the transfer agent for each series and class of shares of the Fund, whether now
or hereafter authorized or issued ("Shares"), dividend disbursing agent and
shareholder servicing agent in connection with any accumulation, open-account or
similar plans provided to the holders of such Shares ("Shareholders") and set
out in the currently effective prospectus and statement of additional
information ("prospectus") of the Fund, including without limitation any
periodic investment plan or periodic withdrawal program.
 
    1.2 DWTFSB agrees that it will perform the following services:
 
        (a) In accordance with procedures established from time to time by
    agreement between the Fund and DWTFSB, DWTFSB shall:
 
           (i) Receive for acceptance, orders for the purchase of Shares, and
       promptly deliver payment and appropriate documentation therefor to the
       custodian of the assets of the Fund (the "Custodian");
 
           (ii) Pursuant to purchase orders, issue the appropriate number of
       Shares and issue certificates therefor or hold such Shares in book form
       in the appropriate Shareholder account;
 
           (iii) Receive for acceptance redemption requests and redemption
       directions and deliver the appropriate documentation therefor to the
       Custodian;
 
           (iv) At the appropriate time as and when it receives monies paid to
       it by the Custodian with respect to any redemption, pay over or cause to
       be paid over in the appropriate manner such monies as instructed by the
       redeeming Shareholders;
 
           (v) Effect transfers of Shares by the registered owners thereof upon
       receipt of appropriate instructions;
 
           (vi) Prepare and transmit payments for dividends and distributions
       declared by the Fund;
 
           (vii) Calculate any sales charges payable by a Shareholder on
       purchases and/or redemptions of Shares of the Fund as such charges may be
       reflected in the prospectus;
 
           (viii) Maintain records of account for and advise the Fund and its
       Shareholders as to the foregoing; and
 
           (ix) Record the issuance of Shares of the Fund and maintain pursuant
       to Rule 17Ad-10(e) under the Securities Exchange Act of 1934 ("1934 Act")
       a record of the total number of Shares of the Fund which are authorized,
       based upon data provided to it by the Fund, and issued and outstanding.
       DWTFSB shall also provide to the Fund on a regular basis the total number
       of Shares that are authorized, issued and outstanding and shall notify
       the Fund in case any proposed issue of Shares by the Fund would result in
       an overissue. In case any issue of Shares
 
                                       1
<PAGE>
       would result in an overissue, DWTFSB shall refuse to issue such Shares
       and shall not countersign and issue any certificates requested for such
       Shares. When recording the issuance of Shares, DWTFSB shall have no
       obligation to take cognizance of any Blue Sky laws relating to the issue
       of sale of such Shares, which functions shall be the sole responsibility
       of the Fund.
 
        (b) In addition to and not in lieu of the services set forth in the
    above paragraph (a), DWTFSB shall:
 
           (i) perform all of the customary services of a transfer agent,
       dividend disbursing agent and, as relevant, shareholder servicing agent
       in connection with dividend reinvestment, accumulation, open-account or
       similar plans (including without limitation any periodic investment plan
       or periodic withdrawal program), including but not limited to,
       maintaining all Shareholder accounts, preparing Shareholder meeting
       lists, mailing proxies, receiving and tabulating proxies, mailing
       shareholder reports and prospectuses to current Shareholders, withholding
       taxes on U.S. resident and non-resident alien accounts, preparing and
       filing appropriate forms required with respect to dividends and
       distributions by federal tax authorities for all Shareholders, preparing
       and mailing confirmation forms and statements of account to Shareholders
       for all purchases and redemptions of Shares and other confirmable
       transactions in Shareholder accounts, preparing and mailing activity
       statements for Shareholders and providing Shareholder account
       information;
 
           (ii) open any and all bank accounts which may be necessary or
       appropriate in order to provide the foregoing services; and
 
           (iii) provide a system that will enable the Fund to monitor the total
       number of Shares sold in each State or other jurisdiction.
 
        (c) In addition, the Fund shall:
 
           (i) identify to DWTFSB in writing those transactions and assets to be
       treated as exempt from Blue Sky reporting for each State; and
 
           (ii) verify the inclusion on the system prior to activation of each
       State in which Fund shares may be sold and thereafter monitor the daily
       purchases and sales for shareholders in each State. The responsibility of
       DWTFSB for the Fund's status under the securities laws of any State or
       other jurisdiction is limited to the inclusion on the system of each
       State as to which the Fund has informed DWTFSB that shares may be sold in
       compliance with state securities laws and the reporting of purchases and
       sales in each such State to the Fund as provided above and as agreed from
       time to time by the Fund and DWTFSB.
 
        (d) DWTFSB shall provide such additional services and functions not
    specifically described herein as may be mutually agreed between DWTFSB and
    the Fund. Procedures applicable to such services may be established from
    time to time by agreement between the Fund and DWTFSB.
 
Article 2  FEES AND EXPENSES
 
    2.1 For performance by DWTFSB pursuant to this Agreement, each Fund agrees
to pay DWTFSB an annual maintenance fee for each Shareholder account and certain
transactional fees, if applicable, as set out in the respective fee schedule
attached hereto as Schedule A. Such fees and out-of-pocket expenses and advances
identified under Section 2.2 below may be changed from time to time subject to
mutual written agreement between the Fund and DWTFSB.
 
    2.2 In addition to the fees paid under Section 2.1 above, the Fund agrees to
reimburse DWTFSB for out of pocket expenses in connection with the services
rendered by DWTFSB hereunder. In addition, any other expenses incurred by DWTFSB
at the request or with the consent of the Fund will be reimbursed by the Fund.
 
    2.3 The Fund agrees to pay all fees and reimbursable expenses within a
reasonable period of time following the mailing of the respective billing
notice. Postage for mailing of dividends, proxies, Fund reports and other
mailings to all Shareholder accounts shall be advanced to DWTFSB by the Fund
upon request prior to the mailing date of such materials.
 
                                       2
<PAGE>
Article 3  REPRESENTATIONS AND WARRANTIES OF DWTFSB
 
    DWTFSB represents and warrants to the Fund that:
 
    3.1 It is a federally chartered savings bank whose principal office is in
New Jersey.
 
    3.2 It is and will remain registered with the U.S. Securities and Exchange
Commission ("SEC") as a Transfer Agent pursuant to the requirements of Section
17A of the 1934 Act.
 
    3.3 It is empowered under applicable laws and by its charter and By-Laws to
enter into and perform this Agreement.
 
    3.4 All requisite corporate proceedings have been taken to authorize it to
enter into and perform this Agreement.
 
    3.5 It has and will continue to have access to the necessary facilities,
equipment and personnel to perform its duties and obligations under this
Agreement.
 
Article 4  REPRESENTATIONS AND WARRANTIES OF THE FUND
 
    The Fund represents and warrants to DWTFSB that:
 
    4.1 It is a corporation duly organized and existing and in good standing
under the laws of Delaware or Maryland or a trust duly organized and existing
and in good standing under the laws of Massachusetts, as the case may be.
 
    4.2 It is empowered under applicable laws and by its Articles of
Incorporation or Declaration of Trust, as the case may be, and under its By-Laws
to enter into and perform this Agreement.
 
    4.3 All corporate proceedings necessary to authorize it to enter into and
perform this Agreement have been taken.
 
    4.4 It is an investment company registered with the SEC under the Investment
Company Act of 1940, as amended (the "1940 Act").
 
    4.5 A registration statement under the Securities Act of 1933 (the "1933
Act") is currently effective and will remain effective, and appropriate state
securities law filings have been made and will continue to be made, with respect
to all Shares of the Fund being offered for sale.
 
Article 5  DUTY OF CARE AND INDEMNIFICATION
 
    5.1 DWTFSB shall not be responsible for, and the Fund shall indemnify and
hold DWTFSB harmless from and against, any and all losses, damages, costs,
charges, counsel fees, payments, expenses and liability arising out of or
attributable to:
 
        (a) All actions of DWTFSB or its agents or subcontractors required to be
    taken pursuant to this Agreement, provided that such actions are taken in
    good faith and without negligence or willful misconduct.
 
        (b) The Fund's refusal or failure to comply with the terms of this
    Agreement, or which arise out of the Fund's lack of good faith, negligence
    or willful misconduct or which arise out of breach of any representation or
    warranty of the Fund hereunder.
 
        (c) The reliance on or use by DWTFSB or its agents or subcontractors of
    information, records and documents which (i) are received by DWTFSB or its
    agents or subcontractors and furnished to it by or on behalf of the Fund,
    and (ii) have been prepared and/or maintained by the Fund or any other
    person or firm on behalf of the Fund.
 
        (d) The reliance on, or the carrying out by DWTFSB or its agents or
    subcontractors of, any instructions or requests of the Fund.
 
        (e) The offer or sale of Shares in violation of any requirement under
    the federal securities laws or regulations or the securities or Blue Sky
    laws of any State or other jurisdiction that notice of
 
                                       3
<PAGE>
    offering of such Shares in such State or other jurisdiction or in violation
    of any stop order or other determination or ruling by any federal agency or
    any State or other jurisdiction with respect to the offer or sale of such
    Shares in such State or other jurisdiction.
 
    5.2 DWTFSB shall indemnify and hold the Fund harmless from or against any
and all losses, damages, costs, charges, counsel fees, payments, expenses and
liability arising out of or attributable to any action or failure or omission to
act by DWTFSB as a result of the lack of good faith, negligence or willful
misconduct of DWTFSB, its officers, employees or agents.
 
    5.3 At any time, DWTFSB may apply to any officer of the Fund for
instructions, and may consult with legal counsel to the Fund, with respect to
any matter arising in connection with the services to be performed by DWTFSB
under this Agreement, and DWTFSB and its agents or subcontractors shall not be
liable and shall be indemnified by the Fund for any action taken or omitted by
it in reliance upon such instructions or upon the opinion of such counsel.
DWTFSB, its agents and subcontractors shall be protected and indemnified in
acting upon any paper or document furnished by or on behalf of the Fund,
reasonably believed to be genuine and to have been signed by the proper person
or persons, or upon any instruction, information, data, records or documents
provided to DWTFSB or its agents or subcontractors by machine readable input,
telex, CRT data entry or other similar means authorized by the Fund, and shall
not be held to have notice of any change of authority of any person, until
receipt of written notice thereof from the Fund. DWTFSB, its agents and
subcontractors shall also be protected and indemnified in recognizing stock
certificates which are reasonably believed to bear the proper manual or
facsimile signature of the officers of the Fund, and the proper countersignature
of any former transfer agent or registrar, or of a co-transfer agent or
co-registrar.
 
    5.4 In the event either party is unable to perform its obligations under the
terms of this Agreement because of acts of God, strikes, equipment or
transmission failure or damage reasonably beyond its control, or other causes
reasonably beyond its control, such party shall not be liable for damages to the
other for any damages resulting from such failure to perform or otherwise from
such causes.
 
    5.5 Neither party to this Agreement shall be liable to the other party for
consequential damages under any provision of this Agreement or for any act or
failure to act hereunder.
 
    5.6 In order that the indemnification provisions contained in this Article 5
shall apply, upon the assertion of a claim for which either party may be
required to indemnify the other, the party seeking indemnification shall
promptly notify the other party of such assertion, and shall keep the other
party advised with respect to all developments concerning such claim. The party
who may be required to indemnify shall have the option to participate with the
party seeking indemnification in the defense of such claim. The party seeking
indemnification shall in no case confess any claim or make any compromise in any
case in which the other party may be required to indemnify it except with the
other party's prior written consent.
 
Article 6  DOCUMENTS AND COVENANTS OF THE FUND AND DWTFSB
 
    6.1 The Fund shall promptly furnish to DWTFSB the following, unless
previously furnished to Dean Witter Trust Company, the prior transfer agent of
the Fund:
 
        (a) If a corporation:
 
           (i) A certified copy of the resolution of the Board of Directors of
       the Fund authorizing the appointment of DWTFSB and the execution and
       delivery of this Agreement;
 
           (ii) A certified copy of the Articles of Incorporation and By-Laws of
       the Fund and all amendments thereto;
 
           (iii) Certified copies of each vote of the Board of Directors
       designating persons authorized to give instructions on behalf of the Fund
       and signature cards bearing the signature of any officer of the Fund or
       any other person authorized to sign written instructions on behalf of the
       Fund;
 
           (iv) A specimen of the certificate for Shares of the Fund in the form
       approved by the Board of Directors, with a certificate of the Secretary
       of the Fund as to such approval;
 
                                       4
<PAGE>
        (b) If a business trust:
 
           (i) A certified copy of the resolution of the Board of Trustees of
       the Fund authorizing the appointment of DWTFSB and the execution and
       delivery of this Agreement;
 
           (ii) A certified copy of the Declaration of Trust and By-Laws of the
       Fund and all amendments thereto;
 
           (iii) Certified copies of each vote of the Board of Trustees
       designating persons authorized to give instructions on behalf of the Fund
       and signature cards bearing the signature of any officer of the Fund or
       any other person authorized to sign written instructions on behalf of the
       Fund;
 
           (iv) A specimen of the certificate for Shares of the Fund in the form
       approved by the Board of Trustees, with a certificate of the Secretary of
       the Fund as to such approval;
 
        (c) The current registration statements and any amendments and
    supplements thereto filed with the SEC pursuant to the requirements of the
    1933 Act or the 1940 Act;
 
        (d) All account application forms or other documents relating to
    Shareholder accounts and/or relating to any plan, program or service offered
    or to be offered by the Fund; and
 
        (e) Such other certificates, documents or opinions as DWTFSB deems to be
    appropriate or necessary for the proper performance of its duties.
 
    6.2 DWTFSB hereby agrees to establish and maintain facilities and procedures
reasonably acceptable to the Fund for safekeeping of Share certificates, check
forms and facsimile signature imprinting devices, if any; and for the
preparation or use, and for keeping account of, such certificates, forms and
devices.
 
    6.3 DWTFSB shall prepare and keep records relating to the services to be
performed hereunder, in the form and manner as it may deem advisable and as
required by applicable laws and regulations. To the extent required by Section
31 of the 1940 Act, and the rules and regulations thereunder, DWTFSB agrees that
all such records prepared or maintained by DWTFSB relating to the services
performed by DWTFSB hereunder are the property of the Fund and will be
preserved, maintained and made available in accordance with such Section 31 of
the 1940 Act, and the rules and regulations thereunder, and will be surrendered
promptly to the Fund on and in accordance with its request.
 
    6.4 DWTFSB and the Fund agree that all books, records, information and data
pertaining to the business of the other party which are exchanged or received
pursuant to the negotiation or the carrying out of this Agreement shall remain
confidential and shall not be voluntarily disclosed to any other person except
as may be required by law or with the prior consent of DWTFSB and the Fund.
 
    6.5 In case of any request or demands for the inspection of the Shareholder
records of the Fund, DWTFSB will endeavor to notify the Fund and to secure
instructions from an authorized officer of the Fund as to such inspection.
DWTFSB reserves the right, however, to exhibit the Shareholder records to any
person whenever it is advised by its counsel that it may be held liable for the
failure to exhibit the Shareholder records to such person.
 
Article 7  DURATION AND TERMINATION OF AGREEMENT
 
    7.1 This Agreement shall remain in full force and effect until August 1,
2000 and from year-to-year thereafter unless terminated by either party as
provided in Section 7.2 hereof.
 
    7.2 This Agreement may be terminated by the Fund on 60 days written notice,
and by DWTFSB on 90 days written notice, to the other party without payment of
any penalty.
 
    7.3 Should the Fund exercise its right to terminate, all out-of-pocket
expenses associated with the movement of records and other materials will be
borne by the Fund. Additionally, DWTFSB reserves the right to charge for any
other reasonable fees and expenses associated with such termination.
 
Article 8  ASSIGNMENT
 
    8.1 Except as provided in Section 8.3 below, neither this Agreement nor any
rights or obligations hereunder may be assigned by either party without the
written consent of the other party.
 
                                       5
<PAGE>
    8.2 This Agreement shall inure to the benefit of and be binding upon the
parties and their respective permitted successors and assigns.
 
    8.3 DWTFSB may, in its sole discretion and without further consent by the
Fund, subcontract, in whole or in part, for the performance of its obligations
and duties hereunder with any person or entity including but not limited to
companies which are affiliated with DWTFSB; PROVIDED, HOWEVER, that such person
or entity has and maintains the qualifications, if any, required to perform such
obligations and duties, and that DWTFSB shall be as fully responsible to the
Fund for the acts and omissions of any agent or subcontractor as it is for its
own acts or omissions under this Agreement.
 
Article 9  AFFILIATIONS
 
    9.1 DWTFSB may now or hereafter, without the consent of or notice to the
Fund, function as transfer agent and/or shareholder servicing agent for any
other investment company registered with the SEC under the 1940 Act and for any
other issuer, including without limitation any investment company whose adviser,
administrator, sponsor or principal underwriter is or may become affiliated with
Morgan Stanley, Dean Witter, Discover & Co. or any of its direct or indirect
subsidiaries or affiliates.
 
    9.2 It is understood and agreed that the Directors or Trustees (as the case
may be), officers, employees, agents and shareholders of the Fund, and the
directors, officers, employees, agents and shareholders of the Fund's investment
adviser and/or distributor, are or may be interested in DWTFSB as directors,
officers, employees, agents and shareholders or otherwise, and that the
directors, officers, employees, agents and shareholders of DWTFSB may be
interested in the Fund as Directors or Trustees (as the case may be), officers,
employees, agents and shareholders or otherwise, or in the investment adviser
and/or distributor as directors, officers, employees, agents, shareholders or
otherwise.
 
Article 10  AMENDMENT
 
    10.1 This Agreement may be amended or modified by a written agreement
executed by both parties and authorized or approved by a resolution of the Board
of Directors or the Board of Trustees (as the case may be) of the Fund.
 
Article 11  APPLICABLE LAW
 
    11.1 This Agreement shall be construed and the provisions thereof
interpreted under and in accordance with the laws of the State of New York.
 
Article 12  MISCELLANEOUS
 
    12.1 In the event that one or more additional investment companies managed
or administered by Dean Witter InterCapital Inc. or any of its affiliates
("Additional Funds") desires to retain DWTFSB to act as transfer agent, dividend
disbursing agent and/or shareholder servicing agent, and DWTFSB desires to
render such services, such services shall be provided pursuant to a letter
agreement, substantially in the form of Exhibit A hereto, between DWTFSB and
each Additional Fund.
 
    12.2 In the event of an alleged loss or destruction of any Share
certificate, no new certificate shall be issued in lieu thereof, unless there
shall first be furnished to DWTFSB an affidavit of loss or non-receipt by the
holder of Shares with respect to which a certificate has been lost or destroyed,
supported by an appropriate bond satisfactory to DWTFSB and the Fund issued by a
surety company satisfactory to DWTFSB, except that DWTFSB may accept an
affidavit of loss and indemnity agreement executed by the registered holder (or
legal representative) without surety in such form as DWTFSB deems appropriate
indemnifying DWTFSB and the Fund for the issuance of a replacement certificate,
in cases where the alleged loss is in the amount of $1,000 or less.
 
    12.3 In the event that any check or other order for payment of money on the
account of any Shareholder or new investor is returned unpaid for any reason,
DWTFSB will (a) give prompt notification to the Fund's distributor
("Distributor") (or to the Fund if the Fund acts as its own distributor) of such
non-payment; and (b) take such other action, including imposition of a
reasonable processing or handling fee, as DWTFSB may, in its sole discretion,
deem appropriate or as the Fund and, if applicable, the Distributor may instruct
DWTFSB.
 
                                       6
<PAGE>
    12.4 Any notice or other instrument authorized or required by this Agreement
to be given in writing to the Fund or to DWTFSB shall be sufficiently given if
addressed to that party and received by it at its office set forth below or at
such other place as it may from time to time designate in writing.
 
To the Fund:
 
[Name of Fund]
Two World Trade Center
New York, New York 10048
 
Attention: General Counsel
 
To DWTFSB:
 
Dean Witter Trust FSB
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
 
Attention: President
 
Article 13  MERGER OF AGREEMENT
 
    13.1 This Agreement constitutes the entire agreement between the parties
hereto and supersedes any prior agreement with respect to the subject matter
hereof whether oral or written.
 
Article 14  PERSONAL LIABILITY
 
    14.1 In the case of a Fund organized as a Massachusetts business trust, a
copy of the Declaration of Trust of the Fund is on file with the Secretary of
The Commonwealth of Massachusetts, and notice is hereby given that this
instrument is executed on behalf of the Board of Trustees of the Fund as
Trustees and not individually and that the obligations of this instrument are
not binding upon any of the Trustees or shareholders individually but are
binding only upon the assets and property of the Fund; provided, however, that
the Declaration of Trust of the Fund provides that the assets of a particular
Series of the Fund shall under no circumstances be charged with liabilities
attributable to any other Series of the Fund and that all persons extending
credit to, or contracting with or having any claim against, a particular Series
of the Fund shall look only to the assets of that particular Series for payment
of such credit, contract or claim.
 
    IN WITNESS WHEREOF, the parties hereto have caused this Amended and Restated
Agreement to be executed in their names and on their behalf by and through their
duly authorized officers, as of the day and year first above written.
 
DEAN WITTER FUNDS
 
    MONEY MARKET FUNDS
 
 1.  Dean Witter Liquid Asset Fund Inc.
 2.  Active Assets Money Trust
 3.  Dean Witter U.S. Government Money Market Trust
 4.  Active Assets Government Securities Trust
 5.  Dean Witter Tax-Free Daily Income Trust
 6.  Active Assets Tax-Free Trust
 7.  Dean Witter California Tax-Free Daily Income Trust
 8.  Dean Witter New York Municipal Money Market Trust
 9.  Active Assets California Tax-Free Trust
 
    EQUITY FUNDS
 
10.  Dean Witter American Value Fund
11.  Dean Witter Mid-Cap Growth Fund
12.  Dean Witter Dividend Growth Securities Inc.
 
                                       7
<PAGE>
13.  Dean Witter Capital Growth Securities
14.  Dean Witter Global Dividend Growth Securities
15.  Dean Witter Income Builder Fund
16.  Dean Witter Natural Resource Development Securities Inc.
17.  Dean Witter Precious Metals and Minerals Trust
18.  Dean Witter Developing Growth Securities Trust
19.  Dean Witter Health Sciences Trust
20.  Dean Witter Capital Appreciation Fund
21.  Dean Witter Information Fund
22.  Dean Witter Value-Added Market Series
23.  Dean Witter World Wide Investment Trust
24.  Dean Witter European Growth Fund Inc.
25.  Dean Witter Pacific Growth Fund Inc.
26.  Dean Witter International SmallCap Fund
27.  Dean Witter Japan Fund
28.  Dean Witter Utilities Fund
29.  Dean Witter Global Utilities Fund
30.  Dean Witter Special Value Fund
31.  Dean Witter Financial Services Trust
32.  Dean Witter Market Leader Trust
33.  Dean Witter Managers' Select Fund
34.  Dean Witter Fund of Funds
35.  Dean Witter S&P 500 Index Fund
 
    BALANCED FUNDS
 
36.  Dean Witter Balanced Growth Fund
37.  Dean Witter Balanced Income Trust
 
    ASSET ALLOCATION FUNDS
 
38.  Dean Witter Strategist Fund
39.  Dean Witter Global Asset Allocation Fund
 
    FIXED INCOME FUNDS
 
40.  Dean Witter High Yield Securities Inc.
41.  Dean Witter High Income Securities
42.  Dean Witter Convertible Securities Trust
43.  Dean Witter Intermediate Income Securities
44.  Dean Witter Short-Term Bond Fund
45.  Dean Witter World Wide Income Trust
46.  Dean Witter Global Short-Term Income Fund Inc.
47.  Dean Witter Diversified Income Trust
48.  Dean Witter U.S. Government Securities Trust
49.  Dean Witter Federal Securities Trust
50.  Dean Witter Short-Term U.S. Treasury Trust
51.  Dean Witter Intermediate Term U.S. Treasury Trust
52.  Dean Witter Tax-Exempt Securities Trust
53.  Dean Witter National Municipal Trust
55.  Dean Witter Limited Term Municipal Trust
55.  Dean Witter California Tax-Free Income Fund
56.  Dean Witter New York Tax-Free Income Fund
57.  Dean Witter Hawaii Municipal Trust
58.  Dean Witter Multi-State Municipal Series Trust
59.  Dean Witter Select Municipal Reinvestment Fund
 
                                       8
<PAGE>
    SPECIAL PURPOSE FUNDS
 
60.  Dean Witter Retirement Series
61.  Dean Witter Variable Investment Series
62.  Dean Witter Select Dimensions Investment Series
 
    TCW/DW FUNDS
 
63.  TCW/DW Core Equity Trust
64.  TCW/DW North American Government Income Trust
65.  TCW/DW Latin American Growth Fund
66.  TCW/DW Income and Growth Fund
67.  TCW/DW Small Cap Growth Fund
68.  TCW/DW Balanced Fund
69.  TCW/DW Total Return Trust
70.  TCW/DW Global Telecom Trust
71.  TCW/DW Strategic Income Trust
72.  TCW/DW Mid-Cap Equity Trust
 
                                          By: __________________________________
                                             Barry Fink
                                             Vice President and General Counsel
 
ATTEST:
 
_____________________________
Assistant Secretary
 
                                          DEAN WITTER TRUST FSB
 
                                          By: __________________________________
                                             John Van Heuvelen
                                             President
 
ATTEST:
 
_____________________________
Senior Vice President
 
                                       9
<PAGE>
                                   EXHIBIT A
 
Dean Witter Trust FSB
Harborside Financial Center
Plaza Two
Jersey City, NJ 07311
 
Gentlemen:
 
    The undersigned, (INSET NAME OF INVESTMENT COMPANY) a (Massachusetts
business trust/Maryland corporation) (the "Fund"), desires to employ and appoint
Dean Witter Trust FSB ("DWTFSB") to act as transfer agent for each series and
class of shares of the Fund, whether now or hereafter authorized or issued
("Shares"), dividend disbursing agent and shareholder servicing agent, registrar
and agent in connection with any accumulation, open-account or similar plan
provided to the holders of Shares, including without limitation any periodic
investment plan or periodic withdrawal plan.
 
    The Fund hereby agrees that, in consideration for the payment by the Fund to
DWTFSB of fees as set out in the fee schedule attached hereto as Schedule A,
DWTFSB shall provide such services to the Fund pursuant to the terms and
conditions set forth in the Transfer Agency and Service Agreement annexed
hereto, as if the Fund was a signatory thereto.
 
    Please indicate DWTFSB's acceptance of employment and appointment by the
Fund in the capacities set forth above by so indicating in the space provided
below.
 
                                          Very truly yours,
 
                                          (NAME OF FUND)
 
                                          By:  _________________________________
                                              Barry Fink
                                              Vice President and General Counsel
 
ACCEPTED AND AGREED TO:
 
DEAN WITTER TRUST FSB
 
By: __________________________________
 
Its: _________________________________
 
Date: ________________________________
 
                                       10

<PAGE>

                                      SCHEDULE A


Fund:         Dean Witter New York Municipal Money Market Trust

Fees:         (1)  Annual maintenance fee of $15.00 per shareholder account,
              payable monthly.

              (2)  A fee equal to 1/12 of the fee set forth in (1) above, for
              providing Forms 1099 for accounts closed during the year, payable
              following the end of the calendar year.

              (3)  Out-of-pocket expenses in accordance with Section 2.2 of the
              Agreement.

              (4)  Fees for additional services not set forth in this Agreement
              shall be as negotiated between the parties.


f:\schedA\5

<PAGE>

CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this 
Post-Effective Amendment No. 9 to the registration statement on Form N-1A 
(the "Registration Statement") of our report dated February 6, 1998, relating 
to the financial statements and financial highlights of Dean Witter New York 
Municipal Money Market Trust, which appears in such Prospectus, and to the 
incorporation by reference of our report into the Statement of Additional 
Information which constitutes part of this Registration Statement. We also 
consent to the reference to us under the heading "Financial Highlights" in 
such Prospectus and to the references to us under the headings "Independent 
Accountants" and "Experts" in such Statement of Additional Information.



PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
February 25, 1998


<PAGE>


       AMENDED AND RESTATED PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1
                                      OF
              DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST

   WHEREAS, Dean Witter New York Municipal Money Market Trust (the "Fund") is 
engaged in business as an open-end management investment company and is 
registered as such under the Investment Company Act of 1940, as amended (the 
"Act"); and

   WHEREAS, on January 4, 1993, the Fund amended and restated a Plan and 
Agreement of Distribution pursuant to Rule 12b-1 under the Act which had 
initially been adopted on March 5, 1990, and the Trustees then determined 
that there was a reasonable likelihood that the Plan of Distribution, as then 
amended and restated, would benefit the Fund and its shareholders; and

   WHEREAS, the Trustees believe that continuation of said Plan of 
Distribution, as amended and restated herein, is reasonably likely to 
continue to benefit the Fund and its shareholders; and

   WHEREAS, the Agreement incorporated in said initial Plan and Agreement of 
Distribution was entered into by the Fund with Dean Witter Reynolds Inc. 
("DWR"); and

   WHEREAS, on January 4, 1993, the Fund and DWR substituted Dean Witter 
Distributors Inc. (the "Distributor") in the place of DWR as distributor of 
the Fund's shares; and

   WHEREAS, the Fund, DWR and the Distributor intend that DWR will continue 
to promote the sale of Fund shares and provide personal services to Fund 
shareholders with respect to their holdings of Fund shares; and

   WHEREAS, the Fund and the Distributor have entered into a separate 
Distribution Agreement dated as of May 31, 1997, pursuant to which the Fund 
has employed the Distributor in such capacity during the continuous offering 
of shares of the Fund.

   NOW, THEREFORE, the Fund hereby amends and restates the Plan of 
Distribution previously adopted and amended and restated, and the Distributor 
hereby agrees to the terms of said Plan of Distribution (the "Plan"), as 
amended and restated herein, in accordance with Rule 12b-1 under the Act on 
the following terms and conditions:

   1. The Fund is hereby authorized to utilize its assets to finance certain 
activities in connection with the distribution of its shares.

   2. Subject to the supervision of the Trustees and the terms of the 
Distribution Agreement, the Distributor is authorized to promote the 
distribution of the Fund's shares and to provide related services through 
DWR, its affiliates or other broker-dealers it may select, and its own 
Registered Representatives. The Distributor, DWR, its affiliates and said 
broker-dealers shall be reimbursed, directly or through the Distributor, as 
it may direct, as provided in paragraph 4 hereof for their services and 
expenses, which may include one or more of the following: (1) compensation 
to, and expenses of, account executives and other employees, including 
overhead and telephone expenses; (2) sales incentives and bonuses to sales 
representatives of the Distributor, DWR, its affiliates and other 
broker-dealers, and to marketing personnel in connection with promoting sales 
of shares of the Fund; (3) expenses incurred in connection with promoting 
sales of shares of the Fund; (4) preparing and distributing sales literature; 
and (5) providing advertising and promotional activities, including direct 
mail solicitation and television, radio, newspaper, magazine and other media 
advertisements.

   3. The Distributor hereby undertakes to directly bear all costs of 
rendering the services to be performed by it under this Plan and under the 
Distribution Agreement, except for those specific expenses that the Trustees 
determine to reimburse as hereinafter set forth.

   4. The Fund is hereby authorized to reimburse the Distributor, DWR, its 
affiliates and other broker-dealers for incremental distribution expenses 
incurred by them specifically on behalf of the Fund. Reimbursement will be 
made through payments at the end of each month. The amount of each monthly 
payment may in no event exceed an amount equal to a payment at the annual 
rate of 0.15 of 1% of the Fund's average net assets during the month. In the 
case of all expenses other than expenses representing


<PAGE>

a residual to account executives, such amounts shall be determined at the 
beginning of each calendar quarter by the Trustees, including a majority of 
the Trustees who are not "interested persons" of the Fund, as defined in the 
Act. Expenses representing a residual to account executives may be reimbursed 
without prior determination. In the event that the Distributor proposes that 
monies shall be reimbursed for other than such expenses, then in making the 
quarterly determinations of the amounts that may be expended by the Fund, the 
Distributor shall provide, and the Trustees shall review, a quarterly budget 
of projected incremental distribution expenses to be incurred by the 
Distributor, DWR, its affiliates or other broker-dealers on behalf of the 
Fund, together with a report explaining the purposes and anticipated benefits 
of incurring such expenses. The Trustees shall determine the particular 
expenses, and the portion thereof, that may be borne by the Fund, and in 
making such determination shall consider the scope of the Distributor's 
commitment to promoting the distribution of the shares of the Fund directly 
or through DWR, its affiliates or other broker-dealers.

   5. The Distributor may direct that all or any part of the amounts 
receivable by it under this Plan be paid directly to DWR, its affiliates or 
other broker-dealers.

   6. If, as of the end of any calendar year, the actual expenses incurred by 
the Distributor, DWR, its affiliates and other broker-dealers on behalf of 
the Fund (including accrued expenses and amounts reserved for incentive 
compensation and bonuses) are less than the amount of payments made by the 
Fund pursuant to this Plan, the Distributor shall promptly make appropriate 
reimbursement to the Fund. If, however, as of the end of any calendar year, 
the actual expenses of the Distributor, DWR, its affiliates and other 
broker-dealers are greater than the amount of payments made by the Fund 
pursuant to this Plan, the Fund will not reimburse the Distributor, DWR, its 
affiliates or other broker-dealers for such expenses through payments accrued 
pursuant to this Plan in the subsequent calendar year.

   7. The Distributor shall provide to the Trustees of the Fund and the 
Trustees shall review, promptly after the end of each calendar quarter, a 
written report regarding the incremental distribution expenses incurred by 
the Distributor, DWR, its affiliates or other broker-dealers on behalf of the 
Fund during such calendar quarter, which report shall include: (1) an 
itemization of the types of expenses and the purposes therefor; (2) the 
amounts of such expenses; and (3) a description of the benefits derived by 
the Fund.

   8. This Plan, as amended and restated, shall become effective upon 
approval by a vote of the Trustees of the Fund, and of the Trustees who are 
not "interested persons" of the Fund, as defined in the Act, and who have no 
direct or indirect financial interest in the operation of this Plan, cast in 
person at a meeting called for the purpose of voting on this Plan.

   9. This Plan shall continue in effect until April 30, 1998 and from year 
to year thereafter, provided such continuance is specifically approved at 
least annually in the manner provided for approval of this Plan in paragraph 
8 hereof. This Plan may not be amended to increase materially the amount to 
be spent for the services described herein unless such amendment is approved 
by a vote of at least a majority of the outstanding voting securities of the 
Fund, as defined in the Act, and no material amendment to this Plan shall be 
made unless approved in the manner provided for approval in paragraph 8 
hereof.

   10. This Plan may be terminated at any time, without the payment of any 
penalty, by vote of a majority of the Trustees who are not "interested 
persons" of the Fund, as defined in the Act, and who have no direct or 
indirect financial interest in the operation of this Plan or by a vote of a 
majority of the outstanding voting securities of the Fund, as defined in the 
Act, on no more than thirty days' written notice to any other party to this 
Plan.

   11. While this Plan is in effect, the selection and nomination of Trustees 
who are not interested persons of the Fund shall be committed to the 
discretion of the Trustees who are not interested persons.

   12. The Fund shall preserve copies of this Plan and all reports made 
pursuant to paragraph 7 hereof, for a period of not less than six years from 
the date of this Plan, as amended and restated herein, or any such report, as 
the case may be, the first two years in an easily accessible place.

   13. This Plan shall be construed in accordance with the laws of the State 
of New York and the applicable provisions of the Act. To the extent the 
applicable law of the State of New York, or any of the provisions herein, 
conflicts with the applicable provisions of the Act, the latter shall control.


                                2

<PAGE>

   14. The Declaration of Trust establishing Dean Witter New York Municipal 
Money Market Trust, dated December 28, 1989, a copy of which, together with 
all amendments thereto (the "Declaration"), is on file in the office of the 
Secretary of the Commonwealth of Massachusetts, provides that the name Dean 
Witter New York Municipal Money Market Trust refers to the Trustees under the 
Declaration collectively as Trustees, but not as individuals or personally; 
and no Trustee, shareholder, officer, employee or agent of Dean Witter New 
York Municipal Money Market Trust shall be held to any personal liability, 
nor shall resort be had to their private property for the satisfaction of any 
obligation or claim or otherwise, in connection with the affairs of said Dean 
Witter New York Municipal Money Market Trust, but the Trust Estate only shall 
be liable.

   IN WITNESS WHEREOF, the Fund, the Distributor and DWR have executed this 
Plan of Distribution, as amended and restated, as of the day and year set 
forth below in New York, New York.

Date: March 5, 1990                         DEAN WITTER NEW YORK MUNICIPAL MONEY
      As amended on January 4, 1993         MARKET TRUST
      and July 23, 1997                     By:
                                               .................................
Attest:                                     DEAN WITTER DISTRIBUTORS INC.
 .......................................
                                            By:
                                               .................................
Attest:                                     DEAN WITTER REYNOLDS INC.
 .......................................
                                            By:
                                               .................................
Attest:
 .......................................


                                3

<PAGE>

      DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST

      Exhibit 16:  Schedule for computation of each performance
      quotation provided in the Statement of Additional Information.


(16)  The Trust's current yield for the seven days ending
      December 31, 1997

      (A-B)  x  365/N

      (1.000602 -1)  x  365/7   =     3.14%

      The Trust's effective annualized yield for the seven days ending
      December 31, 1997

         365/N
      A           - 1

               365/7
      1.000602          - 1    =     3.19%

      A =  Value of  a share of the Trust at end of period.
      B =  Value of  a share of the Trust at beginning of period.
      N =  Number of days in the  period.


CALCULATION                        Tax equivalent Yield  = 5.58% Based on a tax
                                                             bracket of 43.74% 
(1.000602 -1)  x  365/7
     =         3.14%

((1.000602)  ^ 52.14285714-1)
     =         3.19%

TAX  BRACKET :  43.74%

FORMULA (CURRENT 7 DAY YIELD / 1-.4374)
CURRENT 7 DAY  YIELD : 3.14
3.14/0.5626
     =         5.58%
<PAGE>
                 SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
                    DEAN WITTER NEW YORK MUNICIPAL MONEY MARKET TRUST


(A)        GROWTH OF $10,000
(B)        GROWTH OF $50,000
(C)        GROWTH OF $100,000


FORMULA:   G= (TR+1)*P
           G= GROWTH OF INITIAL INVESTMENT
           P= INITIAL INVESTMENT
           TR= TOTAL RETURN SINCE INCEPTION 


<TABLE>
<CAPTION>
INVESTED - P        TOTAL
$10,000, $50,000 &  RETURN - TR            (A)   GROWTH OF        (B)   GROWTH OF             (C)   GROWTH OF
$100,000            31-Dec-97            $10,000 INVESTMENT- G  $50,000 INVESTMENT- G       $100,000 INVESTMENT- G
- -----------         -----------           -------     ---------  -------             -----   --------             ------
<S>                 <C>                   <C>                    <C>                         <C>
 31-Mar-90              23.35               $12,335                     $61,675                   $123,350
</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<INVESTMENTS-AT-COST>                       51,059,808
<INVESTMENTS-AT-VALUE>                      51,059,808
<RECEIVABLES>                                  236,160
<ASSETS-OTHER>                                 197,562
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              51,493,530
<PAYABLE-FOR-SECURITIES>                     1,906,512
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      251,430
<TOTAL-LIABILITIES>                          2,157,942
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    49,335,989
<SHARES-COMMON-STOCK>                       49,335,989
<SHARES-COMMON-PRIOR>                       40,758,640
<ACCUMULATED-NII-CURRENT>                           20
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (421)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                49,335,588
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            1,590,696
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 421,218
<NET-INVESTMENT-INCOME>                      1,169,478
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        1,169,478
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    1,169,485
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    108,032,544
<NUMBER-OF-SHARES-REDEEMED>              (100,624,680)
<SHARES-REINVESTED>                          1,169,485
<NET-CHANGE-IN-ASSETS>                       8,577,342
<ACCUMULATED-NII-PRIOR>                             27
<ACCUMULATED-GAINS-PRIOR>                        (421)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          221,429
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                426,283
<AVERAGE-NET-ASSETS>                        44,285,894
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                  0.026
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                           (0.026)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   0.96
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<PAGE>
                               POWER OF ATTORNEY
 
    KNOW ALL MEN BY THESE PRESENTS, that WAYNE E. HEDIEN, whose signature
appears below, constitutes and appoints David M. Butowsky, Ronald Feiman and
Stuart Strauss, or any of them, his true and lawful attorneys-in-fact and
agents, with full power of substitution among himself and each of the persons
appointed herein, for him and in his name, place and stead, in any and all
capacities, to sign any amendments to any registration statement of ANY OF THE
DEAN WITTER FUNDS SET FORTH ON SCHEDULE A ATTACHED HERETO, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or any of them, may lawfully do or cause to be
done by virtue hereof.
 
Dated: September 1, 1997
 
                                                   /s/ WAYNE E. HEDIEN
 
                                          --------------------------------------
                                                     Wayne E. Hedien
 
97nyc12127
<PAGE>
                                   SCHEDULE A
 

 1.  Active Assets Money Trust
 2.  Active Assets Tax-Free Trust
 3.  Active Assets Government Securities Trust
 4.  Active Assets California Tax-Free Trust
 5.  Dean Witter New York Municipal Money Market Trust
 6.  Dean Witter American Value Fund
 7.  Dean Witter Tax-Exempt Securities Trust
 8.  Dean Witter Tax-Free Daily Income Trust
 9.  Dean Witter Capital Growth Securities
10.  Dean Witter U.S. Government Money Market Trust
11.  Dean Witter Precious Metals and Minerals Trust
12.  Dean Witter Developing Growth Securities Trust
13.  Dean Witter World Wide Investment Trust
14.  Dean Witter Value-Added Market Series
15.  Dean Witter Utilities Fund
16.  Dean Witter Strategist Fund
17.  Dean Witter California Tax-Free Daily Income Trust
18.  Dean Witter Convertible Securities Trust
19.  Dean Witter Intermediate Income Securities
20.  Dean Witter World Wide Income Trust
21.  Dean Witter S&P 500 Index Fund
22.  Dean Witter U.S. Government Securities Trust
23.  Dean Witter Federal Securities Trust
24.  Dean Witter Multi-State Municipal Series Trust
25.  Dean Witter California Tax-Free Income Fund
26.  Dean Witter New York Tax-Free Income Fund
27.  Dean Witter Select Municipal Reinvestment Fund
28.  Dean Witter Variable Investment Series
29.  High Income Advantage Trust
30.  High Income Advantage Trust II
31.  High Income Advantage Trust III
32.  InterCapital Insured Municipal Bond Trust
33.  InterCapital Insured Municipal Trust
34.  InterCapital Insured Municipal Income Trust
35.  InterCapital Quality Municipal Investment Trust
36.  InterCapital Quality Municipal Income Trust
37.  Dean Witter Government Income Trust
38.  Municipal Income Trust
39.  Municipal Income Trust II
40.  Municipal Income Trust III
41.  Municipal Income Opportunities Trust
42.  Municipal Income Opportunities Trust II
43.  Municipal Income Opportunities Trust III
44.  Municipal Premium Income Trust
45.  Prime Income Trust
46.  Dean Witter Short-Term U.S. Treasury Trust
47.  Dean Witter Diversified Income Trust
48.  InterCapital California Insured Municipal Income Trust
49.  Dean Witter Health Sciences Trust
50.  Dean Witter Global Dividend Growth Securities
51.  InterCapital Quality Municipal Securities

 
97nyc12127
<PAGE>

52.  InterCapital California Quality Municipal Securities
53.  InterCapital New York Quality Municipal Securities
54.  Dean Witter Retirement Series
55.  Dean Witter Limited Term Municipal Trust
56.  Dean Witter Short-Term Bond Fund
57.  Dean Witter Global Utilities Fund
58.  InterCapital Insured Municipal Securities
59.  InterCapital Insured California Municipal Securities
60.  Dean Witter High Income Securities
61.  Dean Witter National Municipal Trust
62.  Dean Witter International SmallCap Fund
63.  Dean Witter Mid-Cap Growth Fund
64.  Dean Witter Select Dimensions Investment Series
65.  Dean Witter Global Asset Allocation Fund
66.  Dean Witter Balanced Growth Fund
67.  Dean Witter Balanced Income Fund
68.  Dean Witter Intermediate Term U.S. Treasury Trust
69.  Dean Witter Hawaii Municipal Trust
70.  Dean Witter Japan Fund
71.  Dean Witter Capital Appreciation Fund
72.  Dean Witter Information Fund
73.  Dean Witter Fund of Funds
74.  Dean Witter Special Value Fund
75.  Dean Witter Income Builder Fund
76.  Dean Witter Financial Services Trust
77.  Dean Witter Market Leader Trust
78.  Dean Witter Managers' Select Fund
79.  Dean Witter Liquid Asset Fund Inc.
80.  Dean Witter Natural Resource Development Securities Inc.
81.  Dean Witter Dividend Growth Securities Inc.
82.  Dean Witter European Growth Fund Inc.
83.  Dean Witter Pacific Growth Fund Inc.
84.  Dean Witter High Yield Securities Inc.
85.  Dean Witter Global Short-Term Income Fund Inc.
86.  InterCapital Income Securities Inc.
 
97nyc12127


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