WITTER DEAN U S GOVERNMENT SECURITIES TRUST
485BPOS, 1994-02-17
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<PAGE>
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 17, 1994
 
                                                        REGISTRATION NO. 2-86966
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
 
                             WASHINGTON, D.C. 20549
 
                            ------------------------
 
<TABLE>
<S>                                               <C>
                   FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT      /X/
                    OF 1933
          PRE-EFFECTIVE AMENDMENT NO.                / /
        POST-EFFECTIVE AMENDMENT NO. 11              /X/
                     AND/OR
  REGISTRATION STATEMENT UNDER THE INVESTMENT        /X/
              COMPANY ACT OF 1940
                AMENDMENT NO. 13                     /X/
        (CHECK APPROPRIATE BOX OR BOXES)
</TABLE>
 
                            ------------------------
 
                  DEAN WITTER U.S. GOVERNMENT SECURITIES 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
 
                              SHELDON CURTIS, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
 
                 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 22, 1994 pursuant to paragraph (b)
       ____ 60 days after filing pursuant to paragraph (a)
       ____ on (date) pursuant to paragraph (a) of rule 485.
 
   
    THE  REGISTRANT HAS REGISTERED AN INDEFINITE  NUMBER OF ITS SHARES UNDER THE
SECURITIES ACT  OF 1933  PURSUANT TO  SECTION  (A)(1) OF  RULE 24F-2  UNDER  THE
INVESTMENT  COMPANY ACT OF 1940. THE REGISTRANT  HAS FILED THE RULE 24F-2 NOTICE
FOR ITS FISCAL  YEAR ENDED DECEMBER  31, 1993 WITH  THE SECURITIES AND  EXCHANGE
COMMISSION ON FEBRUARY 11, 1994.
    
 
           AMENDING THE PROSPECTUS AND UPDATING FINANCIAL STATEMENTS
 
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- --------------------------------------------------------------------------------
<PAGE>
                  DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
 
                             CROSS-REFERENCE SHEET
 
                                   FORM N-1A
 
<TABLE>
<S>                                             <C>
ITEM                                                                           CAPTION
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.  .........................................  Redemptions and Repurchases; Shareholder Services
 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; The Distributor; Shareholder Services;
                                                 Custodian and Transfer Agent; Independent Accountants
17.  .........................................  Portfolio Transactions and Brokerage
18.  .........................................  Shares of the Fund
19.  .........................................  The Distributor; Redemptions and Repurchases; Financial Statements;
                                                 Determination of Net Asset Value; Shareholder Services
20.  .........................................  Dividends, Distributions and Taxes
21.  .........................................  The Distributor
22.  .........................................  Performance Information
23.  .........................................  Experts; Financial Statements
</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 22, 1994
    
               Dean Witter U.S. Government Securities Trust (the "Fund") is an
open-end diversified management investment company whose investment objective is
high current income consistent with safety of principal. The Fund offers a
convenient and economical way for persons to invest in a professionally managed
diversified portfolio of obligations issued or guaranteed by the U.S. Government
or its instrumentalities. All such obligations are backed by the full faith and
credit of the United States. No assurance can be given that the Fund's objective
will be realized. Shares of the Fund are not sponsored, guaranteed, endorsed or
insured by the U.S. Government or any agency thereof.
   
               Shares of the Fund are continuously offered at net asset value.
However, redemptions and/or repurchases are subject in most cases to a
contingent deferred sales charge, scaled down from 5% to 1% of the amount
redeemed, if made within six years of purchase, which charge will be paid to the
Fund's Distributor, Dean Witter Distributors Inc. See "Redemptions and
Repurchases--Contingent Deferred Sales Charge." In addition, the Fund pays the
Distributor a Rule 12b-1 distribution fee pursuant to a Plan of Distribution at
the annual rate of 0.75% (0.65% on amounts over $10 billion) of the lesser of
the (i) average daily aggregate net sales or (ii) average daily net assets of
the Fund. See "Purchase of Fund Shares--Plan of Distribution."
    
   
               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 22, 1994, which has been filed with
the Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed below. The
Statement of Additional Information is incorporated herein by reference.
    
 
               Dean Witter
               U.S. Government Securities Trust
               Two World Trade Center
               New York, New York 10048
   
               (212) 392-2550 or
    
   
               (800) 526-3143
    
 
                               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
Purchase of Fund Shares/9
Shareholder Services/11
Redemptions and Repurchases/14
Dividends, Distributions and Taxes/15
Performance Information/16
Additional Information/17
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, THE 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 Distributors Inc.
    Distributor
<PAGE>
 
<TABLE>
<S>                <C>
PROSPECTUS SUMMARY
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
The                  The Fund is organized as a Trust, commonly known as a Massachusetts business trust, and is
Fund                 an open-end diversified management investment company investing in obligations issued or
                     guaranteed by the U.S. Government.
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
Shares               Shares of beneficial interest with $0.01 par value (see page 17).
Offered
</TABLE>
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                  <C>
Offering             At net asset value without sales charge (see page 9). Shares redeemed within six years of
Price                purchase are subject to a contingent deferred sales charge under most circumstances (see
                     page 14).
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                  <C>
Minimum              Minimum initial investment, $1,000; minimum subsequent investment, $100 (see page 9).
Purchase
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
Investment           The investment objective of the Fund is high current income consistent with safety of
Objective            principal.
</TABLE>
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                  <C>
Investment           Dean Witter InterCapital Inc., 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 eighty-one investment companies and
                     other portfolios with assets of approximately $71.2 billion at December 31, 1993 (see pages
                     4 and 5).
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
Management           The Investment Manager receives a monthly fee at the annual rate of 0.50% ( 1/2 of 1%) of
Fee                  daily net assets, scaled down on assets over $1 billion. The fee should not be compared
                     with fees paid by other investment companies without also considering applicable sales
                     loads and distribution fees, including those noted below (see page 5).
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
Dividends            Dividends are declared daily, and paid monthly either in additional shares of the Fund or,
                     at the shareholder's option, in cash (see page 15).
</TABLE>
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                  <C>
Distributor          Dean Witter Distributors Inc. (the "Distributor"). The Distributor receives from the Fund a
and                  distribution fee accrued daily and payable monthly at the rate of 0.75% per annum (0.65% on
Distribution         amounts over $10 billion) of the lesser of (i) the Fund's average daily aggregate net sales
Fee                  or (ii) the Fund's average daily net assets. The fee compensates the Distributor for the
                     services provided in distributing shares of the Fund and for sales-related expenses. The
                     Distributor also receives the proceeds of any contingent deferred sales charges (see pages
                     10 and 14).
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                  <C>
Redemption--         Shares are redeemable by the shareholder at net asset value. An account may be
Contingent           involuntarily redeemed if the total value of the account is less than $100. Although no
Deferred             commission or sales charge is imposed upon the purchase of shares, a contingent deferred
Sales                sales charge (scaled down from 5% to 1%) is imposed on any redemption of shares if after
Charge               such redemption the aggregate current value of an account with the Fund falls below the
                     aggregate amount of the investor's purchase payments made during the six years preceding
                     the redemption. However, there is no charge imposed on redemption of shares purchased
                     through reinvestment of dividends or distributions (see pages 14-15).
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
Risks                The Fund invests only in obligations issued or guaranteed by the U.S. Government which are
                     subject to minimal risk of loss of income and principal. It may engage in the purchase of
                     such securities on a when-issued basis. The value of the Fund's portfolio securities, and
                     therefore the Fund's net asset value per share, may increase or decrease due to various
                     factors, principally changes in prevailing interest rates. Generally, a rise in interest
                     rates will result in a decrease in the Fund's net asset value per share, while a drop in
                     interest rates will result in an increase in the Fund's net asset value per share. In
                     addition, the average life of certain of the securities held in the Fund's portfolio (i.e.,
                     GNMA Certificates) may be shortened by prepayments or refinancings of the mortgage pools
                     underlying such securities (see page 6). Such prepayments may have an impact on dividends
                     paid by the Fund.
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                  <C>
   THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING ELSEWHERE IN THIS PROSPECTUS
                                 AND IN THE STATEMENT OF ADDITIONAL INFORMATION
</TABLE>
 
                                       2
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------
 
   
    The  following table illustrates all expenses and fees that a shareholder of
the Fund will incur. The  expenses and fees set forth  in the table are for  the
fiscal year ended December 31, 1993.
    
 
   
<TABLE>
<CAPTION>
SHAREHOLDER TRANSACTION EXPENSES
- -----------------------------------------------------------------------------------------
<S>                                                                                        <C>
Maximum Sales Charge Imposed on Purchases................................................     None
Maximum Sales Charge Imposed on Reinvested Dividends.....................................     None
Deferred Sales Charge
  (as a percentage of the lesser of original purchase price or redemption proceeds)......     5.0%
  A contingent deferred sales charge is imposed at the following declining rates:
</TABLE>
    
 
<TABLE>
<CAPTION>
YEAR SINCE PURCHASE PAYMENT MADE                                                           PERCENTAGE
- ---------------------------------------------------------------------------------------  ---------------
<S>                                                                                      <C>
First..................................................................................          5.0%
Second.................................................................................          4.0%
Third..................................................................................          3.0%
Fourth.................................................................................          2.0%
Fifth..................................................................................          2.0%
Sixth..................................................................................          1.0%
Seventh and thereafter.................................................................       None
</TABLE>
 
<TABLE>
<S>                                                                                        <C>
Redemption Fees..........................................................................        None
Exchange Fee.............................................................................        None
</TABLE>
 
   
<TABLE>
<CAPTION>
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS)
- ---------------------------------------------------------------------------------
<S>                                                                                <C>         <C>
Management Fees..................................................................                   0.38%
12b-1 Fees*......................................................................                   0.73%
Other Expenses...................................................................                   0.07%
Total Fund Operating Expenses....................................................                   1.18%
<FN>
- ------------
*  A PORTION OF  THE 12B-1 FEE  EQUAL TO 0.20%  OF THE FUND'S  AVERAGE DAILY NET
  ASSETS IS  CHARACTERIZED AS  A  SERVICE FEE  WITHIN  THE MEANING  OF  NATIONAL
  ASSOCIATION OF SECURITIES DEALERS, INC. ("NASD") GUIDELINES.
</TABLE>
    
<TABLE>
<CAPTION>
EXAMPLE                                                                          1 YEAR         3 YEARS        5 YEARS
- ----------------------------------------------------------------------------  -------------  -------------  -------------
<S>                                                                           <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............    $      62      $      67      $      85
You would pay the following expenses on the same investment, assuming no
 redemption.................................................................    $      12      $      37      $      65
 
<CAPTION>
EXAMPLE                                                                        10 YEARS
- ----------------------------------------------------------------------------  -----------
<S>                                                                           <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............   $     143
You would pay the following expenses on the same investment, assuming no
 redemption.................................................................   $     143
</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,"  "Plan of  Distribution" and  "Redemptions  and
Repurchases."
 
   
    Long-term  shareholders  of  the Fund  may  pay  more in  sales  charges and
distribution fees than the  economic equivalent of  the maximum front-end  sales
charges permitted by the NASD.
    
 
                                       3
<PAGE>
   
FINANCIAL HIGHLIGHTS
    
- --------------------------------------------------------------------------------
 
   
    The  following per share data and ratios  for a share of beneficial interest
outstanding throughout  each  period  have been  audited  by  Price  Waterhouse,
independent  accountants. The financial highlights should be read in conjunction
with the  financial statements,  notes  thereto and  the unqualified  report  of
independent  accountants  which are  contained  in the  Statement  of Additional
Information. Further information about the performance of the Fund is  contained
in  the  Fund's Annual  Report to  Shareholders, which  may be  obtained without
charge upon request to the Fund.
    
   
<TABLE>
<CAPTION>
                                                                FOR THE YEAR ENDED DECEMBER 31,
                              ---------------------------------------------------------------------------------------------------
                                1993        1992        1991        1990        1989         1988          1987          1986
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
<S>                           <C>         <C>         <C>         <C>         <C>         <C>           <C>           <C>
Per Share Operating
 Performance:
  Net asset value, beginning
   of period................  $    9.30   $    9.52   $    9.37   $    9.51   $    9.42   $      9.75   $     10.33   $     10.53
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
    Investment
     income--net............        .64         .74         .87         .90         .91           .97           .96          1.02
    Realized and unrealized
     gain (loss) on
     investments--net.......        .01        (.22)        .15        (.14)        .09          (.33)         (.58)         (.20)
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Total from investment
   operations...............        .65         .52        1.02         .76        1.00           .64           .38           .82
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Less dividends and
   distributions:
    Dividends from net
     investment income......       (.64)       (.74)       (.87)       (.90)       (.91)         (.97)         (.96)        (1.02)
    Distributions from net
     realized gains on
     investments............        -0-         -0-         -0-         -0-         -0-           -0-           -0-           -0-
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Total dividends and
   distributions............       (.64)       (.74)       (.87)       (.90)       (.91)         (.97)         (.96)        (1.02)
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Net asset value, end of
   period...................  $    9.31   $    9.30   $    9.52   $    9.37   $    9.51   $      9.42   $      9.75   $     10.33
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
Total Investment Return+....       7.13%       5.76%      11.43%       8.49%      11.10%         6.74%         3.92%         8.23%
Ratios/Supplemental Data:
  Net assets, end of period
   (in millions)............    $12,235     $12,484     $11,736      $9,829     $10,167       $10,366       $10,418       $11,100
  Ratio of expenses to
   average net assets.......       1.18%       1.20%       1.17%       1.23%       1.19%         1.21%         1.18%         1.20%
  Ratio of net investment
   income to average net
   assets...................       6.78%       7.91%       9.23%       9.60%       9.62%        10.01%         9.63%         9.72%
  Portfolio turnover rate...         32%         40%        104%         54%         44%           15%           51%           93%
 
<CAPTION>
                                              FOR THE
                                              PERIOD
                                             JUNE 29,
                                               1984*
                                              THROUGH
                                             DECEMBER
                                 1985        31, 1984
                              -----------   -----------
<S>                           <C>           <C>
Per Share Operating
 Performance:
  Net asset value, beginning
   of period................  $     10.47   $     10.00
                              -----------   -----------
    Investment
     income--net............         1.24           .59
    Realized and unrealized
     gain (loss) on
     investments--net.......          .13           .47
                              -----------   -----------
  Total from investment
   operations...............         1.37          1.06
                              -----------   -----------
  Less dividends and
   distributions:
    Dividends from net
     investment income......        (1.24)         (.59)
    Distributions from net
     realized gains on
     investments............         (.07)          -0-
                              -----------   -----------
  Total dividends and
   distributions............        (1.31)         (.59)
                              -----------   -----------
  Net asset value, end of
   period...................  $     10.53   $     10.47
                              -----------   -----------
                              -----------   -----------
Total Investment Return+....        14.00%        10.85%(1)
Ratios/Supplemental Data:
  Net assets, end of period
   (in millions)............       $7,511          $968
  Ratio of expenses to
   average net assets.......         1.30%         1.43%(2)
  Ratio of net investment
   income to average net
   assets...................        11.53%        11.79%(2)
  Portfolio turnover rate...           98%          N/A(3)
<FN>
- ---------------
        *  COMMENCEMENT OF OPERATIONS.
        +  DOES NOT REFLECT THE DEDUCTION OF SALES LOAD.
      (1)  NOT ANNUALIZED.
      (2)  ANNUALIZED.
      (3)  PORTFOLIO TURNOVER RATES WERE NOT REQUIRED ON U.S. GOVERNMENT SECURITIES PRIOR TO 1985.
</TABLE>
    
 
   
                       SEE NOTES TO FINANCIAL STATEMENTS
    
 
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
   
    Dean Witter U.S.  Government Securities  Trust (the "Fund")  is an  open-end
diversified  management  investment  company  registered  under  the  Investment
Company Act of 1940,  as amended (the "Act").  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 September 29, 1983.
    
 
    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
 
                                       4
<PAGE>
   
Manager,  which was incorporated in July,  1992, is a wholly-owned subsidiary of
Dean  Witter,  Discover  &  Co.,  a  balanced  financial  services  organization
providing a broad range of nationally marketed credit and investment products.
    
 
   
    InterCapital  and its wholly-owned subsidiary,  Dean Witter Services Company
Inc.,  serve  in  various   investment  management,  advisory,  management   and
administrative  capacities  to eighty-one  investment companies,  twenty-nine of
which are listed on the New York  Stock Exchange, with combined total assets  of
approximately  $69.2 billion at  December 31, 1993.  The Investment Manager also
manages portfolios of  pension plans, other  institutions and individuals  which
aggregated approximately $2.0 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 Trustees  review 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 $1 billion,  scaled down  at
various  asset levels to 0.30% on assets over $12.5 billion. For the fiscal year
ended December 31, 1993, the Fund  accrued total compensation to the  Investment
Manager amounting to 0.38% of the Fund's average daily net assets and the Fund's
total expenses amounted to 1.18% of the Fund's average daily net assets.
    
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
    The  investment objective of the Fund is high current income consistent with
safety of  principal.  This investment  objective  may not  be  changed  without
approval  of the Fund's shareholders. The Fund seeks to achieve its objective by
investing in obligations  issued or  guaranteed by  the U.S.  Government or  its
instrumentalities  ("U.S.  Government  securities").  All  such  obligations are
backed by the "full faith and credit"  of the United States. Investments may  be
made  in obligations of instrumentalities of the U.S. Government only where such
obligations are guaranteed by the U.S. Government.
 
    U.S. Government securities  include U.S. Treasury  securities consisting  of
Treasury  bills,  Treasury notes  and  Treasury bonds.  Some  of the  other U.S.
Government securities in  which the Fund  may invest include  securities of  the
Federal  Housing Administration,  the Government  National Mortgage Association,
the Department of  Housing and  Urban Development, the  Export-Import Bank,  the
Farmers  Home Administration, the General  Services Administration, the Maritime
Administration,  Resolution   Funding  Corporation   and  the   Small   Business
Administration.  The  maturities of  such  securities usually  range  from three
months to thirty years.
 
    A portion of  the U.S. Government  securities purchased by  the Fund may  be
zero  coupon securities. Such securities are  purchased at a discount from their
face amount,  giving the  purchaser the  right to  receive their  full value  at
maturity.  The interest earned on  such securities is, implicitly, automatically
compounded and paid out at maturity.  While such compounding at a constant  rate
eliminates  the risk of receiving lower  yields upon reinvestment of interest if
prevailing interest rates decline, the owner  of a zero coupon security will  be
unable to participate in higher yields upon reinvestment of interest received on
interest-paying  securities if prevailing interest  rates rise. For this reason,
zero  coupon   securities   are   subject   to   substantially   greater   price
 
                                       5
<PAGE>
fluctuations  during  periods of  changing  prevailing interest  rates  than are
comparable securities which pay interest currently.
 
    While the Fund has  the ability to  invest in any  securities backed by  the
full  faith and credit of the United  States, it is currently anticipated that a
substantial portion of the Fund's assets will be invested in Certificates of the
Government National  Mortgage  Association  (GNMA). Should  market  or  economic
conditions  warrant,  this  policy is  subject  to  change at  any  time  at the
discretion of the Investment Manager.
 
    DESCRIPTION OF  GNMA CERTIFICATES    GNMA Certificates  are  mortgage-backed
securities.  Each  Certificate  evidences  an interest  in  a  specific  pool of
mortgages insured  by the  Federal Housing  Administration or  the Farmers  Home
Administration   (FHA)  or  guaranteed  by  the  Veterans  Administration  (VA).
Scheduled payments of principal and interest are made to the registered  holders
of  GNMA Certificates. The GNMA Certificates that the Fund will invest in are of
the modified pass-through type.  GNMA guarantees the  timely payment of  monthly
installments  of principal and interest on modified pass-through certificates at
the time such payments are due, whether or not such amounts are collected by the
issuer on the underlying mortgages. The  National Housing Act provides that  the
full  faith and credit of the United States  is pledged to the timely payment of
principal and interest by GNMA of amounts due on these GNMA Certificates.
 
    The average life  of GNMA  Certificates varies  with the  maturities of  the
underlying mortgage instruments with maximum maturities of 30 years. The average
life  is  likely to  be substantially  less  than the  original maturity  of the
mortgage pools  underlying  the  securities  as the  result  of  prepayments  or
refinancing  of  such  mortgages  or foreclosure.  Such  prepayments  are passed
through to the registered holder with the regular monthly payments of  principal
and  interest, which has the effect of reducing future payments. Due to the GNMA
guarantee, foreclosures impose no risk  to investment principal. The  occurrence
of  mortgage prepayments is affected by  factors including the level of interest
rates, general economic  conditions, the location  and age of  the mortgage  and
other  social and demographic conditions. As prepayment rates vary widely, it is
not possible  to accurately  predict  the average  life  of a  particular  pool.
However,  statistics indicate  that the  average life  of the  type of mortgages
backing the majority  of GNMA  Certificates is approximately  twelve years.  For
this  reason,  it is  standard practice  to treat  GNMA Certificates  as 30-year
mortgage-backed securities  which prepay  fully in  the twelfth  year. Pools  of
mortgages  with other maturities or  different characteristics will have varying
assumptions for average  life. The assumed  average life of  pools of  mortgages
having  terms of less than 30 years is less than twelve years, but typically not
less than five years.
 
    The coupon rate of interest of GNMA Certificates is lower than the  interest
rate   paid  on  the  VA-guaranteed  or  FHA-insured  mortgages  underlying  the
Certificates, but only by the amount of the fees paid to GNMA and the issuer.
 
    Yields on pass-through securities are typically quoted by investment dealers
and vendors  based  on  the  maturity of  the  underlying  instruments  and  the
associated  average life  assumption. In periods  of falling  interest rates the
rate of prepayment tends to increase, thereby shortening the actual average life
of a pool of mortgage-related securities. Conversely, in periods of rising rates
the rate of prepayment tends to decrease, thereby lengthening the actual average
life of the pool. Reinvestment by the Fund of prepayments may occur at higher or
lower interest rates than the original investment. Historically, actual  average
life  has been consistent with the twelve-year assumption referred to above. The
actual yield of each GNMA Certificate is influenced by the prepayment experience
of the mortgage pool underlying the Certificates. Interest on GNMA  Certificates
is paid monthly rather than semi-annually as for traditional bonds.
 
   
    The  Fund  will  invest  in  mortgage  pass-through  securities representing
participation interests in  pools of  residential mortgage  loans originated  by
United  States governmental or private lenders such as banks, broker-dealers and
financing corpora-
    
                                       6
<PAGE>
   
tions and guaranteed, to the extent  provided in such securities, by the  United
States  Government or one of its agencies or instrumentalities. Such securities,
which are  ownership interests  in the  underlying mortgage  loans, differ  from
conventional  debt securities, which provide for periodic payment of interest in
fixed amounts (usually semi-annually) and  principal payments at maturity or  on
specified  call  dates.  Mortgage pass-through  securities  provide  for monthly
payments that  are  a  "pass-through"  of the  monthly  interest  and  principal
payments  (including any  prepayments) made by  the individual  borrowers on the
pooled mortgage loans, net of any fees paid to the guarantor of such  securities
and  the  servicer of  the underlying  mortgage  loans. The  guaranteed mortgage
pass-through securities in  which the Fund  may invest include  those issued  or
guaranteed  by GNMA or  other entities which  securities are backed  by the full
faith and credit of the United States.
    
   
    Certificates for  mortgage-backed  securities  evidence  an  interest  in  a
specific  pool of  mortgages. These certificates  are, in  most cases, "modified
pass-through" instruments, wherein the issuing agency guarantees the payment  of
principal  and interest on mortgages underlying the certificates, whether or not
such amounts are collected by the issuer on the underlying mortgages.
    
   
    ADJUSTABLE RATE MORTGAGE SECURITIES.__The Fund may also invest in adjustable
rate mortgage securities  ("ARMs"), which are  pass-through mortgage  securities
collateralized  by  mortgages  with  adjustable rather  than  fixed  rates. ARMs
eligible for inclusion in a mortgage pool generally provide for a fixed  initial
mortgage  interest  rate for  either the  first three,  six, twelve  or thirteen
scheduled monthly  payments.  Thereafter,  the interest  rates  are  subject  to
periodic adjustment based on changes to a designated benchmark index.
    
   
    ARMs  contain maximum and  minimum rates beyond  which the mortgage interest
rate may not vary over the lifetime  of the security. In addition, certain  ARMs
provide  for additional limitations on the  maximum amount by which the mortgage
interest rate  may  adjust  for any  single  adjustment  period.  Alternatively,
certain  ARMs contain limitations on changes in the required monthly payment. In
the event that a monthly payment is not sufficient to pay the interest  accruing
on  an ARM, any  such excess interest is  added to the  principal balance of the
mortgage loan, which is repaid through  future monthly payments. If the  monthly
payment  for such an instrument  exceeds the sum of  the interest accrued at the
applicable mortgage interest  rate and  the principal payment  required at  such
point  to amortize the outstanding principal  balance over the remaining term of
the loan,  the excess  is  utilized to  reduce  the then  outstanding  principal
balance of the ARM.
    
 
   
    COLLATERALIZED    MORTGAGE    OBLIGATIONS   AND    MULTICLASS   PASS-THROUGH
SECURITIES.__Collateralized mortgage obligations or "CMOs" are debt  obligations
collateralized by mortgage loans or mortgage pass-through securities. Typically,
CMOs  are collateralized by  GNMA, FNMA or  FHLMC Certificates, but  also may be
collateralized by whole loans or private mortgage pass-through securities  (such
collateral   collectively  hereinafter   referred  to   as  "Mortgage  Assets").
Multiclass pass-through securities are equity  interests in a trust composed  of
Mortgage  Assets. Payments of principal of  and interest on the Mortgage Assets,
and any reinvestment income  thereon, provide the funds  to pay debt service  on
the  CMOs  or  make  scheduled  distributions  on  the  multiclass  pass-through
securities. CMOs may be  issued by agencies or  instrumentalities of the  United
States  government,  or by  private originators  of,  or investors  in, mortgage
loans, including  savings  and  loan associations,  mortgage  banks,  commercial
banks,  investment  banks and  special  purpose subsidiaries  of  the foregoing.
However, the Fund will only  invest in CMOs which are  backed by the full  faith
and credit of the United States.
    
 
   
    The  issuer of a  series of CMOs  may elect to  be treated as  a Real Estate
Mortgage Investment  Conduit  ("REMIC").  REMICs include  governmental  and/  or
private  entities that issue a fixed pool of mortgages secured by an interest in
real property. REMICs are similar to CMOs in that they issue multiple classes of
securities, but  unlike  CMOs, which  are  required  to be  structured  as  debt
securities,
    
 
                                       7
<PAGE>
   
REMICs  may  be structured  as indirect  ownership  interests in  the underlying
assets of the REMICs themselves. However, there are no effects on the Fund  from
investing  in CMOs issued by entities that have elected to be treated as REMICs,
and all future references to  CMOs shall also be  deemed to include REMICs.  The
Fund may invest without limitation in CMOs.
    
   
    In  a CMO, a series of bonds  or certificates is issued in multiple classes.
Each class of CMOs, often  referred to as a "tranche,"  is issued at a  specific
fixed  or floating coupon rate  and has a stated  maturity or final distribution
date. Principal prepayments  on the  Mortgage Assets may  cause the  CMOs to  be
retired substantially earlier than their stated maturities or final distribution
dates.  Interest is  paid or accrues  on all classes  of the CMOs  on a monthly,
quarterly or  semi-annual basis.  Certain  CMOs may  have variable  or  floating
interest  rates and  others may be  stripped (securities which  provide only the
principal or interest feature of the underlying security).
    
 
   
    The principal of and interest on the Mortgage Assets may be allocated  among
the  several classes of a  CMO series in a  number of different ways. Generally,
the purpose of the allocation of the cash  flow of a CMO to the various  classes
is to obtain a more predictable cash flow to the individual tranches than exists
with  the  underlying  collateral  of  the CMO.  As  a  general  rule,  the more
predictable the cash flow is on a  CMO tranche, the lower the anticipated  yield
will  be on that tranche  at the time of  issuance relative to prevailing market
yields on mortgage-backed securities.  As part of the  process of creating  more
predictable  cash flows on most of the tranches in a series of CMOs, one or more
tranches generally must  be created that  absorb most of  the volatility in  the
cash  flows on the underlying  mortgage loans. The yields  on these tranches are
generally higher  than prevailing  market yields  on mortgage-backed  securities
with  similar maturities. As  a result of  the uncertainty of  the cash flows of
these tranches, the market prices of  and yield on these tranches generally  are
more volatile.
    
 
   
    The  Fund also  may invest  in, among  other things,  parallel pay  CMOs and
Planned Amortization Class CMOs ("PAC Bonds"). Parallel pay CMOs are  structured
to  provide payments of principal  on each payment date  to more than one class.
These simultaneous payments  are taken  into account in  calculating the  stated
maturity date or final distribution date of each class, which, as with other CMO
structures,  must be retired  by its stated maturity  date or final distribution
date but  may be  retired earlier.  PAC Bonds  generally require  payments of  a
specified  amount  of  principal on  each  payment  date. PAC  Bonds  always are
parallel pay CMOs with the required principal payment on such securities  having
the highest priority after interest has been paid to all classes.
    
 
    WHEN-ISSUED  AND DELAYED DELIVERY  SECURITIES AND FORWARD  COMMITMENTS  From
time to  time,  in  the ordinary  course  of  business, the  Fund  may  purchase
securities  on a when-issued or  delayed delivery basis or  may purchase or sell
securities on a forward commitment basis. When such transactions are negotiated,
the price is fixed at the time  of the commitment, but delivery and payment  can
take  place between  one month and  120 days  after the date  of the commitment.
While the Fund will only purchase securities on a when-issued, delayed  delivery
or  forward commitment 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 subject to market fluctuation
and  no interest accrues  to the purchaser  during this period.  At the time the
Fund makes  the commitment  to purchase  or sell  securities on  a  when-issued,
delayed delivery or forward commitment basis, it will record the transaction and
thereafter  reflect the  value, each  day, of such  security purchased  or, if a
sale, the proceeds to be  received, in determining its  net asset value. At  the
time  of delivery of  the securities, their value  may be more  or less than the
purchase or sale price. The Fund  will also establish a segregated account  with
its  custodian  bank  in  which  it  will  continually  maintain  cash  or  cash
equivalents or  other portfolio  securities  equal in  value to  commitments  to
 
                                       8
<PAGE>
purchase  securities on  a when-issued,  delayed delivery  or forward commitment
basis.
 
PORTFOLIO TRADING
 
   
    The Fund  is  managed within  InterCapital's  Government Bond  Group,  which
manages  six funds and fund portfolios, with approximately $15 billion in assets
at December 31, 1993. Rajesh K. Gupta, Senior Vice President of InterCapital and
a member of InterCapital's Government Bond Group, has been the primary portfolio
manager of the Fund since July, 1992 and has been managing portfolios  comprised
of government securities at InterCapital for over five years.
    
   
    Although  the  Fund  does not  intend  to  engage in  short-term  trading of
portfolio securities as a  means of achieving its  investment objective, it  may
sell  portfolio securities without regard  to the length of  time they have been
held whenever such sale will in the Investment Manager's opinion strengthen  the
Fund's  position  and  contribute  to its  investment  objective.  The portfolio
trading engaged  in  by the  Fund  may result  in  its portfolio  turnover  rate
exceeding  100%. Brokerage commissions are not  normally charged on the purchase
or sale of U.S. Government obligations, but such transactions may involve  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.
    
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
   
    The Fund offers its  shares for sale  to the public  on a continuous  basis.
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  which  have entered  into  selected dealer  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 minimum initial purchase is $1,000. Subsequent purchases of $100 or more
may be  made  by  sending  a  check, payable  to  Dean  Witter  U.S.  Government
Securities  Trust, directly to Dean Witter  Trust Company (the "Transfer Agent")
at P.O. Box 1040, Jersey City, NJ 07303 or by contacting an account executive of
DWR or other  Selected Broker-Dealer.  In the  case of  investments pursuant  to
Systematic  Payroll Deduction Plans (including Individual Retirement Plans), the
Fund, in its discretion,  may accept investments without  regard to any  minimum
amounts  which would otherwise  be required, if  the Fund has  reason to believe
that additional investments will increase  the investment in all accounts  under
such  Plans to at  least $1,000. Certificates  for shares purchased  will not be
issued unless requested by the shareholder in writing to the Transfer Agent. The
offering price will be the net  asset value per share next determined  following
receipt of an order (see "Determination of Net Asset Value").
    
 
   
    Shares  of  the Fund  are  sold through  the  Distributor on  a  normal five
business day settlement basis;  that is, payment generally  is due on or  before
the  fifth business  day (settlement  date) after the  order is  placed with the
Distributor. Shares of the Fund  purchased through the Distributor are  entitled
to dividends beginning on the next business day following settlement date. Since
DWR  and other  Selected Broker-Dealers  forward investors'  funds on settlement
date, they will benefit  from the temporary  use of the  funds where payment  is
made  prior thereto. Shares purchased through the Transfer Agent are entitled to
dividends beginning on the next business  day following receipt of an order.  As
noted  above, orders placed directly with the Transfer Agent must be accompanied
by payment. Investors will be entitled to receive capital gains distributions if
their order is received by the close of business on the day prior to the  record
date for such distributions. While no sales charge is imposed at the time shares
are
    
 
                                       9
<PAGE>
   
purchased,  a contingent  deferred sales  charge may be  imposed at  the time of
redemption (see "Redemptions  and Repurchases").  The Fund  and the  Distributor
reserve the right to reject any purchase orders.
    
PLAN OF DISTRIBUTION
   
    The  Fund has adopted a  Plan of Distribution, pursuant  to Rule 12b-1 under
the Act (the "Plan"), under which the Fund pays the Distributor a fee, which  is
accrued  daily and payable monthly, at an annual rate of 0.75% (0.65% on amounts
over $10 billion) of the lesser of: (a) the average daily aggregate gross  sales
of   the  Fund's  shares  since  the   inception  of  the  Fund  (not  including
reinvestments of dividends  or capital  gains distributions),  less the  average
daily  aggregate net asset value of the  Fund's shares redeemed since the Fund's
inception upon which  a contingent  deferred sales  charge has  been imposed  or
waived,  or (b) the Fund's  average daily net assets. The  fee is treated by the
Fund as an  expense in  the year it  is accrued.  A portion of  the fee  payable
pursuant  to the Plan, equal to 0.20% of the Fund's average daily net assets, is
characterized as a service fee within the meaning of NASD guidelines.
    
   
    Amounts paid under the Plan are paid to the Distributor to compensate it for
the services provided and  the expenses borne by  the Distributor and others  in
the  distribution of the Fund's shares, including the payment of commissions for
sales of the  Fund's shares and  incentive compensation to  and expenses of  DWR
account executives and others who engage in or support distribution of shares or
who  service shareholder  accounts, including  overhead and  telephone expenses;
printing and distribution of  prospectuses and reports  used in connection  with
the  offering  of the  Fund's  shares to  other  than current  shareholders; and
preparation, printing  and  distribution  of sales  literature  and  advertising
materials.  In addition, the  Distributor may utilize fees  paid pursuant to the
Plan to compensate DWR and  other Selected Broker-Dealers for their  opportunity
costs  in advancing such amounts,  which compensation would be  in the form of a
carrying charge on any unreimbursed distribution expenses.
    
 
   
    For the fiscal year ended December 31, 1993, the Fund accrued payments under
the Plan amounting to $91,852,480, which amount is equal to 0.73% of the  Fund's
average  daily net assets  for the fiscal  year. The payments  accrued under the
Plan were calculated pursuant  to clause (b) of  the compensation formula  under
the Plan.
    
 
   
    At any given time, the expenses of distributing shares of the Fund may be in
excess  of the total of (i)  the payments made by the  Fund pursuant to the Plan
and (ii) the  proceeds of contingent  deferred sales charges  paid by  investors
upon  redemption  of  shares  (see  "Redemptions  and  Repurchases--  Contingent
Deferred Sales Charge"). For example, if $1 million in expenses in  distributing
shares of the Fund had been incurred and $750,000 had been received as described
in  (i)  and  (ii) above,  the  excess  expense would  amount  to  $250,000. The
Distributor  has  advised  the  Fund  that  the  excess  distribution  expenses,
including the carrying charge described above, totalled $209,279,716 at December
31,  1993, which  was equal  to 1.71%  of the  Fund's net  assets on  such date.
Because there  is  no  requirement  under  the  Plan  that  the  Distributor  be
reimbursed  for all  distribution expenses or  any requirement that  the Plan be
continued from year to year, this excess amount does not constitute a  liability
of  the Fund. Although there is no legal obligation for the Fund to pay expenses
incurred in excess of payments  made to the Distributor  under the Plan and  the
proceeds  of contingent deferred sales charges paid by investors upon redemption
of shares, if for any reason the  Plan is terminated the Trustees will  consider
at that time the manner in which to treat such expenses. Any cumulative expenses
incurred, but not yet recovered through distribution fees or contingent deferred
sales  charges, may or may not be  recovered through future distribution fees or
contingent deferred sales charges.
    
 
DETERMINATION OF NET ASSET VALUE
 
    The net asset value per share of the Fund is determined by taking the  value
of  all the  assets of  the Fund, subtracting  all liabilities,  dividing by the
number of shares outstanding and adjusting  the result to the nearest cent.  The
net   asset  value  per  share  is  calculated  by  the  Investment  Manager  at
 
                                       10
<PAGE>
4:00 P.M. New York time  on each day that the  New York Stock Exchange is  open.
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.
 
   
    In  the  calculation  of  the  Fund's net  asset  value:  (1)  all portfolio
securities for which  over-the-counter market quotations  are readily  available
are  valued  at  the bid  price;  (2)  when market  quotations  are  not readily
available,  including  circumstances  under  which  it  is  determined  by   the
Investment  Manager that sale or  bid prices are not  reflective of a security's
market value, portfolio securities are valued at their fair value as  determined
in  good faith under procedures established by and under the general supervision
of the  Fund's Board  of  Trustees (valuation  of  securities for  which  market
quotations  are not readily available may be based upon current market prices of
securities which are comparable in coupon, rating and maturity or an appropriate
matrix utilizing  similar  factors); and  (3)  short-term instruments  having  a
maturity  date of more than  sixty days are valued  on a "mark-to-market" basis,
that is, at prices  based on market quotations  for securities of similar  type,
yield,  quality and maturity, until sixty  days prior to maturity and thereafter
at amortized cost. Short-term instruments having  a maturity date of sixty  days
or less at the time of purchase are valued at amortized cost unless the Board of
Trustees determines this does not represent fair market value.
    
   
    Certain  of  the Fund's  portfolio securities  may be  valued by  an outside
pricing service approved by the Fund's Trustees. The pricing service utilizes  a
matrix  system  incorporating  security  quality,  maturity  and  coupon  as the
evaluation model parameters, and/or research evaluations by its staff, including
review of broker-dealer market price quotations, in determining what it believes
is the  fair  valuation of  the  portfolio  securities valued  by  such  pricing
service.
    
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
   
    AUTOMATIC  INVESTMENT  OF DIVIDENDS  AND DISTRIBUTIONS.   All  dividends and
capital gains distributions are automatically paid in full and fractional shares
of the Fund (or, if specified by the shareholder, any other open-end  investment
company  for which InterCapital serves as investment manager (collectively, with
the Fund, the "Dean Witter Funds")),  unless the shareholder requests that  they
be  paid in  cash. Shares  so acquired are  not subject  to the  imposition of a
contingent deferred sales  charge upon  their redemption  (see "Redemptions  and
Repurchases").  Such dividends and distributions will  be paid, at the net asset
value per  share, in  shares of  the  Fund (or  in cash  if the  shareholder  so
requests) on the monthly payment date, which generally will be no later than the
last  business  day of  the  month for  which  the dividend  or  distribution is
payable. 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.
    
 
   
    EASYINVESTSM.    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.
    
 
   
    SYSTEMATIC WITHDRAWAL PLAN.  A  systematic withdrawal plan (the  "Withdrawal
Plan")  is available  for shareholders  who own or  purchase shares  of the Fund
having a minimum value of $10,000 based  upon the then current net asset  value.
The  Withdrawal Plan provides  for monthly or  quarterly (March, June, September
and December) checks in any  dollar amount, not less than  $25, or in any  whole
percentage  of  the  account balance,  on  an annualized  basis.  Any applicable
contingent deferred sales charge  will be imposed on  shares redeemed under  the
Withdrawal  Plan  (See "Redemptions  and Repurchases--Contingent  Deferred Sales
Charge"). Therefore, any shareholder participating  in the Withdrawal Plan  will
have sufficient shares redeemed from his or her account
    
 
                                       11
<PAGE>
   
so that the proceeds (net of any applicable contingent deferred sales charge) to
the shareholder will be the designated monthly or quarterly amount.
    
 
   
    Shareholders  should  contact  their  DWR  or  other  Selected Broker-Dealer
account executive or the Transfer Agent for further information about any of the
above services.
    
 
    TAX SHELTERED RETIREMENT PLANS.  Retirement  plans are available for use  by
corporations,  the self-employed,  Individual Retirement  Accounts and Custodial
Accounts under Section 403(b)(7) of the Internal Revenue Code. Adoption of  such
plans should be on advice of legal counsel or tax adviser.
 
   
    For  further information  regarding plan administration,  custodial fees and
other details, investors should contact their account executive or the  Transfer
Agent.
    
 
   
    EXCHANGE  PRIVILEGE.    The  Fund makes  available  to  its  shareholders an
"Exchange Privilege" allowing the exchange of  shares of the Fund for shares  of
other  Dean Witter  Funds sold  with a  contingent deferred  sales charge ("CDSC
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 five
Dean Witter Funds  which are money  market funds (the  foregoing eight  non-CDSC
funds  are hereinafter  referred to as  the "Exchange Funds").  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.
    
 
   
    An exchange to another CDSC  fund or any 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. When  exchanging into a  money
market  fund from the Fund, shares  of the Fund are redeemed  out of the Fund at
their next calculated  net asset value  and the proceeds  of the redemption  are
used  to  purchase shares  of the  money market  fund at  their net  asset value
determined the  following day.  Subsequent exchanges  between any  of the  money
market  funds and any  of the CDSC funds  can be effected on  the same basis. No
contingent deferred  sales  charge  ("CDSC")  is imposed  at  the  time  of  any
exchange, although any applicable CDSC will be imposed upon ultimate redemption.
Shares of the Fund acquired in exchange for shares of another CDSC fund having a
different  CDSC schedule  than that  of this  Fund will  be subject  to the CDSC
schedule of this  Fund, even  if such  shares are  subsequently reexchanged  for
shares  of the  CDSC fund  originally purchased. 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 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  CDSC  fund,  the  holding  period
previously frozen when the first  exchange was made resumes  on the last day  of
the month in which shares of a CDSC fund are reacquired. Thus, the CDSC is based
upon  the time (calculated as described above) the shareholder was invested in a
CDSC fund (see "Redemptions and Repurchases--Contingent Deferred Sales Charge").
However, 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 incurred  on or  after that  date
which  are attributable to those shares.  (Exchange Fund 12b-1 distribution fees
are described in the prospectuses for those funds.)
    
 
    In addition, shares of the  Fund may be acquired  in exchange for shares  of
Dean  Witter Funds sold  with a front-end sales  charge ("front-end sales charge
funds"), but shares  of the  Fund, however acquired,  may not  be exchanged  for
shares  of  front-end sales  charge funds.  Shares  of a  CDSC fund  acquired in
exchange for shares of a front-end sales charge fund (or in exchange for  shares
of  other Dean Witter  Funds for which  shares of a  front-end sales charge fund
have been exchanged) are not subject to any CDSC upon their redemption.
 
    Purchases and  exchanges should  be  made for  investment purposes  only.  A
pattern    of   frequent   exchanges   may   be   deemed   by   the   Investment
 
Man-
                                       12
<PAGE>
   
ager 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.  Also, 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.
Shareholders   maintaining  margin   accounts  with  DWR   or  another  Selected
Broker-Dealer are referred to their account executive regarding restrictions  on
exchange of shares of the Fund pledged in the margin account.
    
 
   
    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. Exchanges are  subject to the  minimum investment requirement
and any other conditions imposed by each  fund. 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.
    
   
    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 Dean Witter
Funds (for which the Exchange Privilege is available) pursuant to this  Exchange
Privilege   by  contacting  their  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) 526-3143 (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 case with the Dean Witter
Funds in the past.
    
 
   
    Shareholders should  contact  their  DWR  or  other  Selected  Broker-Dealer
account  executive  or  the Transfer  Agent  for further  information  about the
Exchange Privilege.
    
 
                                       13
<PAGE>
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
   
    REDEMPTION.  Shares of the Fund can be redeemed for cash at any time at  the
net asset value per share next determined; however, such redemption proceeds may
be  reduced by  the amount of  any applicable contingent  deferred sales charges
(see below). If shares  are held in a  Shareholder Investment Account without  a
share certificate, a written request for redemption to the Fund's Transfer Agent
at  P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are held by
the shareholder, the  shares may  be redeemed by  surrendering the  certificates
with  a written  request for redemption,  along with  any additional information
required by the Transfer Agent.
    
   
    CONTINGENT DEFERRED SALES CHARGE.  Shares of the Fund which are held for six
years or more after purchase (calculated from the last day of the month in which
the shares were purchased)  will not be subject  to any charge upon  redemption.
Shares redeemed sooner than six years after purchase may, however, be subject to
a  charge upon  redemption. This charge  is called a  "contingent deferred sales
charge" ("CDSC"), which  will be  a percentage of  the dollar  amount of  shares
redeemed  and will be assessed  on an amount equal to  the lesser of the current
market value  or  the cost  of  the shares  being  redeemed. The  size  of  this
percentage  will depend upon how long the shares have been held, as set forth in
the table below:
    
 
   
<TABLE>
<CAPTION>
                                       Contingent Deferred
            Year Since                    Sales Charge
             Purchase                  as a Percentage of
           Payment Made                  Amount Redeemed
- ----------------------------------  -------------------------
<S>                                 <C>
First.............................               5.0%
Second............................               4.0%
Third.............................               3.0%
Fourth............................               2.0%
Fifth.............................               2.0%
Sixth.............................               1.0%
Seventh and thereafter............            None
</TABLE>
    
 
   
    A CDSC will not be imposed on:  (i) any amount which represents an  increase
in value of shares purchased within the six years preceding the redemption; (ii)
the current net asset value of shares purchased more than six years prior to the
redemption;  and (iii) the  current net asset value  of shares purchased through
reinvestment of dividends  or distributions and/or  shares acquired in  exchange
for  shares of Dean Witter Funds sold with  a front-end sales charge or of other
Dean Witter Funds acquired in exchange for such shares. Moreover, in determining
whether a CDSC is applicable it will  be assumed that amounts described in  (i),
(ii),  and (iii) above (in that order)  are redeemed first. In addition, no CDSC
will be imposed on  redemptions of shares which  were purchased by the  employee
benefit  plans  established  by  DWR  and  SPS  Transaction  Services,  Inc. (an
affiliate of DWR) for their employees  as qualified under Section 401(k) of  the
Internal Revenue Code.
    
 
    In  addition, the CDSC, if otherwise applicable,  will be waived in the case
of (i) redemptions  of shares held  at the  time a shareholder  dies or  becomes
disabled,  only  if the  shares  are (a)  registered either  in  the name  of an
individual shareholder (not a  trust), or in the  names of such shareholder  and
his  or her spouse as joint tenants with right of survivorship, or (b) held in a
qualified corporate  or  self-employed retirement  plan,  Individual  Retirement
Account  or Custodial Account  under Section 403(b) (7)  of the Internal Revenue
Code, provided in either case that  the redemption is requested within one  year
of  the death  or initial determination  of disability, and  (ii) redemptions in
connection with the  following retirement  plan distributions:  (a) lump-sum  or
other  distributions from a qualified corporate or self-employed retirement plan
following retirement (or in the case of a "key employee" of a "top heavy"  plan,
following  attainment  of  age 59  1/2);  (b) distributions  from  an Individual
Retirement Account or Custodial Account under Section 403(b)(7) of the  Internal
Revenue Code following attainment of age 59 1/2; and (c) a tax-free return of an
excess  contribution to an  IRA. For the purpose  of determining disability, the
Distributor utilizes the definition of disability contained in Section  72(m)(7)
of  the  Internal Revenue  Code, which  relates  to the  inability to  engage in
gainful
 
employ-
                                       14
<PAGE>
   
ment. All waivers will be granted  only following receipt by the Distributor  of
confirmation of the investor's entitlement.
    
   
    REPURCHASE.    DWR  and  other  Selected  Broker-Dealers  are  authorized to
repurchase shares represented by a share  certificate which is delivered to  any
of  their  offices.  Shares held  in  a  shareholder's account  without  a share
certificate may also  be repurchased  by DWR and  other Selected  Broker-Dealers
upon  the telephonic request of the shareholder. The repurchase price is the net
asset value next computed (see "Purchase of Fund Shares") after such  repurchase
order  is  received  by DWR  or  other  Selected Broker-Dealer,  reduced  by any
applicable CDSC.
    
 
   
    The CDSC, if any, will be the only fee imposed by the Fund, the Distributor,
DWR or  other Selected  Broker-Dealers.  The offer  by  DWR and  other  Selected
Broker-Dealers  to repurchase shares may be  suspended without notice by them at
any time. In that event, shareholders may redeem their shares through the Fund's
Transfer Agent as set forth above under "Redemption."
    
   
    PAYMENT FOR SHARES REDEEMED  OR REPURCHASED.   Payment for shares  presented
for  repurchase or  redemption will  be made  by check  within seven  days after
receipt by the Transfer Agent of the certificate and/or written request in  good
order.  Such payment may be postponed or the right of redemption suspended under
unusual circumstances, e.g., when normal trading is not taking place on the  New
York  Stock Exchange. If the shares to  be redeemed have recently been purchased
by check, payment of the redemption proceeds 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).
Shareholders  maintaining  margin   accounts  with  DWR   or  another   Selected
Broker-Dealer  are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin account.
    
   
    REINSTATEMENT PRIVILEGE.   A  shareholder  who has  had  his or  her  shares
redeemed  or  repurchased and  has not  previously exercised  this reinstatement
privilege  may,  within  thirty  days  after  the  date  of  the  redemption  or
repurchase,  reinstate any portion or all of  the proceeds of such redemption or
repurchase in shares  of the Fund  at net  asset value next  determined after  a
reinstatement  request, together with the proceeds,  is received by the Transfer
Agent and receive a pro-rata  credit for any CDSC  paid in connection with  such
redemption or repurchase.
    
 
   
    INVOLUNTARY REDEMPTION.  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 have  a value of
less than $100 as a result of redemptions or repurchases, or such lesser  amount
as  may be fixed by  the Trustees. However, before  the Fund redeems such shares
and sends the proceeds to the  shareholder, it will notify the shareholder  that
the  value of the shares  is less than $100  and allow him or  her sixty days to
make an additional investment in an amount which will increase the value of  his
or  her account to $100 or more before the redemption is processed. No CDSC will
be imposed on any involuntary redemption.
    
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
   
    DIVIDENDS  AND  DISTRIBUTIONS.    The  Fund  declares  dividends  from   net
investment  income on each day the New  York Stock Exchange is open for business
to shareholders of  record as of  the close of  business the preceding  business
day.  The amount of dividend  may fluctuate from day  to day. Such dividends are
paid monthly.  The Fund  intends  to distribute  substantially  all of  its  net
investment income on an annual basis.
    
 
    The  Fund may distribute quarterly net realized short-term capital gains, if
any, in excess of  any net realized long-term  capital losses. The Fund  intends
 
                                       15
<PAGE>
   
to  distribute dividends from net long-term capital gains, if any, at least once
each year. The Fund may,  however, elect to retain all  or a portion of any  net
long-term  capital gains  in any  year for reinvestment.  Also, the  Fund may at
times make  payments  from sources  other  than  income or  net  capital  gains.
Payments  from such sources would, in effect, represent a return of a portion of
each shareholder's investment. All, or a portion, of such payments would not  be
taxable to shareholders.
    
   
    All dividends and any capital gains distributions will be paid in additional
Fund   shares  (without  sales   charge)  and  automatically   credited  to  the
shareholder's account  without  issuance  of  a  share  certificate  unless  the
shareholder  requests  in  writing  that  all  dividends  or  all  dividends and
distributions be paid in cash. (See "Shareholder Services--Automatic  Investment
of Dividends and Distributions".)
    
 
    TAXES.   Because the Fund intends to distribute substantially all of its net
investment income and net short-term capital gains to shareholders and  continue
to  qualify as a regulated investment company under Subchapter M of the Internal
Revenue Code, it  is not  expected that  the Fund will  be required  to pay  any
federal income tax on such income and capital gains.
 
   
    Shareholders  who are  required to pay  taxes on their  income will normally
have to pay federal income taxes,  and any applicable state and/or local  income
taxes,  on  the dividends  and distributions  they receive  from the  Fund. Such
dividends and  distributions, to  the  extent that  they  are derived  from  net
investment  income  and  net  short-term  capital  gains,  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  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 corporate dividends received deduction.
    
 
   
    After  the  end  of  the  calendar  year,  shareholders  will  be  sent full
information on their dividends and capital gains distributions for tax purposes.
To avoid  being subject  to a  31%  federal backup  withholding tax  on  taxable
dividends,  capital  gains distributions  and  the proceeds  of  redemptions and
repurchases, shareholders' taxpayer identification numbers must be furnished and
certified as to accuracy.
    
 
    The  foregoing  discussion  relates  solely   to  the  federal  income   tax
consequences  of an investment in the Fund. Distributions may also be subject to
state and local taxes; therefore, each shareholder is advised to consult his  or
her own tax adviser.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
    From time to time the Fund may quote its "yield" and/or its"total return" in
advertisements  and sales literature. Both the yield and the total return of the
Fund are based on  historical earnings and are  not intended to indicate  future
performance.  The  yield of  the Fund  is  computed by  dividing the  Fund's net
investment income over a  30-day period by an  average value (using the  average
number of shares entitled to receive dividends and the net asset value per share
at  the  end  of  the  period), all  in  accordance  with  applicable regulatory
requirements. Such amount is compounded for six months and then annualized for a
twelve-month period to derive the Fund's yield.
    The "average annual total return" of the Fund refers to a figure  reflecting
the  average annualized  percentage increase  (or decrease)  in the  value of an
initial investment in the Fund of $1,000 over periods of one and five years,  as
well  as over  the life of  the Fund.  Average annual total  return reflects all
income earned  by the  Fund,  any appreciation  or  depreciation of  the  Fund's
assets,  all expenses incurred by the Fund  and all sales charges which would be
incurred by redeeming shareholders, for the stated
 
                                       16
<PAGE>
periods. It also assumes reinvestment of all dividends and distributions paid by
the Fund.
   
    In addition to the foregoing, the  Fund may advertise its total return  over
different  periods of time  by means of aggregate,  average, and year-by-year or
other types of total  return figures. Such calculations  may or may not  reflect
the deduction of the contingent deferred sales charge which, if reflected, would
reduce  the  performance  quoted. The  Fund  may  also advertise  the  growth of
hypothetical investments of $10,000, $50,000 and $100,000 in shares of the Fund.
The Fund  from time  to time  may  also advertise  its performance  relative  to
certain performance rankings and indexes compiled by independent organizations.
    
 
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 the 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 Fund
obligations include  such  disclaimer,  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's
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.
    
 
   
    SHAREHOLDER  INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund at the telephone numbers or address set forth on the front cover  of
this Prospectus.
    
 
                                       17
<PAGE>
                        THE DEAN WITTER FAMILY OF FUNDS
 
MONEY MARKET FUNDS
 
   
Dean Witter Liquid Asset Fund Inc.
    
   
Dean Witter U.S. Government Money Market Trust
    
   
Dean Witter Tax-Free Daily Income Trust
    
   
Dean Witter California Tax-Free Daily Income Trust
    
   
Dean Witter New York Municipal Money Market Trust
    
 
EQUITY FUNDS
 
Dean Witter American Value Fund
Dean Witter Natural Resource Development Securities Inc.
Dean Witter Dividend Growth Securities Inc.
Dean Witter Developing Growth Securities Trust
Dean Witter World Wide Investment Trust
Dean Witter Equity Income Trust
Dean Witter Value-Added Market Series
Dean Witter Utilities Fund
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 Health Sciences Trust
   
Dean Witter Global Dividend Growth Securities
    
 
FIXED-INCOME FUNDS
 
Dean Witter High Yield Securities Inc.
Dean Witter Tax-Exempt Securities Trust
Dean Witter U.S. Government Securities Trust
Dean Witter Federal Securities Trust
Dean Witter Convertible Securities Trust
Dean Witter California Tax-Free Income Fund
Dean Witter New York Tax-Free Income Fund
Dean Witter World Wide Income Trust
Dean Witter Intermediate Income Securities
Dean Witter Global Short-Term Income Fund Inc.
Dean Witter Multi-State Municipal Series Trust
Dean Witter Premier Income Trust
Dean Witter Short-Term U.S. Treasury Trust
Dean Witter Diversified Income Trust
   
Dean Witter Limited Term Municipal Trust
    
   
Dean Witter Short-Term Bond Fund
    
 
DEAN WITTER RETIREMENT SERIES
 
Liquid Asset Series
U.S. Government Money Market Series
U.S. Government Securities Series
Intermediate Income Securities Series
American Value Series
Capital Growth Series
Dividend Growth Series
Strategist Series
Utilities Series
Value-Added Market Series
Global Equity Series
 
ASSET ALLOCATION FUNDS
 
Dean Witter Managed Assets Trust
Dean Witter Strategist Fund
 
ACTIVE ASSETS ACCOUNT PROGRAM
 
Active Assets Money Trust
Active Assets Tax-Free Trust
Active Assets California Tax-Free Trust
Active Assets Government Securities Trust
<PAGE>
 
   
<TABLE>
<S>                                               <C>
Dean Witter
U.S. Government Securities Trust
Two World Trade Center
New York, New York 10048
TRUSTEES
Jack F. Bennett
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire                                     Dean Witter
Dr. John E. Jeuck                                  U.S. Government
Dr. Manuel H. Johnson                              Securities
Paul Kolton                                        Trust
Michael E. Nugent
Albert T. Sommers
Edward R. Telling
OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive Officer
Sheldon Curtis
Vice President, Secretary and
General Counsel
Rajesh K. Gupta                                                             [LOGO]
Vice President
Thomas F. Caloia
Treasurer
CUSTODIAN
The Bank of New York
110 Washington Street
New York, New York 10286
TRANSFER AGENT AND
DIVIDEND DISBURSING AGENT
Dean Witter Trust Company
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
INDEPENDENT ACCOUNTANTS
Price Waterhouse
1177 Avenue of the Americas
New York, New York 10036
INVESTMENT MANAGER
Dean Witter InterCapital Inc.
</TABLE>
    
 
   
                                                             Prospectus
<TABLE>
<S>                                               <C>
February 22, 1994
</TABLE>
    
<PAGE>
   
STATEMENT OF ADDITIONAL INFORMATION
FEBRUARY 22, 1994                                                         [LOGO]
    
 
- --------------------------------------------------------------------------------
 
    Dean  Witter U.S.  Government Securities Trust  (the "Fund")  is an open-end
diversified management  investment  company  whose investment  objective  is  to
provide  high  current  income consistent  with  safety of  principal.  The Fund
invests only in obligations issued or  guaranteed by the U.S. Government or  its
instrumentalities.  All such obligations are backed by the full faith and credit
of the United States Government.
 
   
    A Prospectus for the Fund dated February 22, 1994, which provides the  basic
information  you  should know  before  investing in  the  Fund, may  be obtained
without charge from the Fund at its address or phone number listed below or from
the Fund's  Distributor, Dean  Witter  Distributors Inc.,  or from  Dean  Witter
Reynolds  Inc.  at  any of  its  branch  offices. This  Statement  of Additional
Information is not a prospectus. It contains information in addition to and more
detailed than that set forth  in the Prospectus. It  is intended to provide  you
additional  information regarding the activities and operations of the Fund, and
should be read in conjunction with the Prospectus.
    
 
Dean Witter
U.S. Government Securities Trust
Two World Trade Center
New York, New York 10048
(212) 392-2550
<PAGE>
TABLE OF CONTENTS
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                                                                                      <C>
The Fund and its Management............................................................          3
Trustees and Officers..................................................................          6
Investment Practices and Policies......................................................          9
Investment Restrictions................................................................          9
Portfolio Transactions and Brokerage...................................................         10
The Distributor........................................................................         11
Shareholder Services...................................................................         14
Redemptions and Repurchases............................................................         19
Dividends, Distributions and Taxes.....................................................         21
Performance Information................................................................         22
Shares of the Fund.....................................................................         23
Custodian and Transfer Agent...........................................................         24
Independent Accountants................................................................         24
Reports to Shareholders................................................................         24
Legal Counsel..........................................................................         24
Experts................................................................................         24
Registration Statement.................................................................         24
Report of Independent Accountants......................................................         25
Financial Statements -- December 31, 1993..............................................         26
</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
September 29, 1983.
 
THE INVESTMENT MANAGER
 
   
    Dean  Witter InterCapital Inc. (the "Investment Manager" or "InterCapital"),
a Delaware corporation, whose address is  Two World Trade Center, New York,  New
York  10048, is  the Fund's Investment  Manager. InterCapital  is a wholly-owned
subsidiary of Dean Witter, Discover &  Co. ("DWDC"), 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  Dean  Witter  InterCapital  Inc.  thereafter.)  The   daily
management  of  the  Fund and  research  relating  to the  Fund's  portfolio are
conducted by  or  under  the direction  of  officers  of the  Fund  and  of  the
Investment  Manager, subject to periodic review by the Fund's Board of Trustees.
In addition, the Trustees of the  Fund provide guidance on economic factors  and
interest rate trends. 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., InterCapital Insured Municipal Bond Trust,
InterCapital Insured  Municipal  Trust, InterCapital  Insured  Municipal  Income
Trust,  InterCapital  California  Insured Municipal  Income  Trust, InterCapital
Insured  Municipal   Securities,  InterCapital   Insured  California   Municipal
Securities,   InterCapital  Quality  Municipal  Investment  Trust,  InterCapital
Quality Municipal  Income  Trust,  InterCapital  Quality  Municipal  Securities,
InterCapital  California  Quality  Municipal Securities,  InterCapital  New York
Quality Municipal Securities, High Income Advantage Trust, High Income Advantage
Trust II, High Income Advantage Trust III, Dean Witter Government Income  Trust,
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  California Tax-Free  Income Fund,  Dean Witter
Equity Income Trust,  Dean Witter  New York  Tax-Free Income  Fund, Dean  Witter
Convertible  Securities Trust, Dean Witter Federal Securities Trust, Dean Witter
Value-Added Market  Series, Dean  Witter World  Wide Income  Trust, Dean  Witter
Intermediate  Income Securities, Dean Witter Utilities Fund, Dean Witter Managed
Assets Trust, Dean Witter  California Tax-Free Daily  Income Trust, Dean  Witter
Strategist  Fund, Dean  Witter Capital Growth  Securities, Dean  Witter New York
Municipal Money Market Trust, Dean Witter European Growth Fund Inc., Dean Witter
Precious Metals and Minerals  Trust, Dean Witter  Global Short-Term Income  Fund
Inc.,  Dean Witter Pacific  Growth Fund Inc.,  Dean Witter Multi-State Municipal
Series Trust,  Dean Witter  Premier Income  Trust, Dean  Witter Short-Term  U.S.
Treasury  Trust,  Dean  Witter  Diversified  Income  Trust,  Dean  Witter Health
Sciences Trust,  Dean  Witter Retirement  Series,  Dean Witter  Global  Dividend
Growth  Securities,  Dean  Witter  Limited  Term  Municipal  Trust,  Dean Witter
Short-Term Bond Fund, Active Assets  Money Trust, Active Assets Tax-Free  Trust,
Active  Assets California  Tax-Free Trust,  Active Assets  Government Securities
Trust, 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,  Prime Income Trust and Municipal
Premium 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
    
 
                                       3
<PAGE>
   
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  Term Trust  2000,
TCW/DW  Term  Trust 2002  and  TCW/ DW  Term  Trust 2003  (the  "TCW/DW Funds").
InterCapital also serves as: (i)  sub-adviser to Templeton Global  Opportunities
Trust,  an  open-end investment  company;  (ii) administrator  of  The BlackRock
Strategic  Term  Trust  Inc.,  a   closed-end  investment  company;  and   (iii)
sub-administrator  of  MassMutual Participation  Investors and  Templeton Global
Governments Income Trust, closed-end investment companies.
    
 
    The Investment Manager also serves as an investment adviser for Dean  Witter
World  Wide Investment Fund,  an investment company organized  under the laws of
Luxembourg, shares of which are not available for purchase in the United  States
or by American citizens outside 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 and policies.
 
    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, 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.
 
   
    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. The foregoing
internal reorganization 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 "The  Distributor") will be paid by
the Fund. The expenses borne by the  Fund include, but are not limited to:  fees
pursuant  to any  plan of distribution;  charges and expenses  of any registrar,
custodian, stock transfer and dividend disbursing agent; brokerage  commissions;
taxes; engraving and printing 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  shareholders' and  Trustees'  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
    
 
                                       4
<PAGE>
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 Fund's daily net assets pursuant to the Agreement:
0.50% of the portion of such daily  net assets not exceeding $1 billion;  0.475%
of  the portion of such daily net  assets exceeding $1 billion but not exceeding
$1.5 billion;  0.45% of  the portion  of such  daily net  assets exceeding  $1.5
billion  but not exceeding $2  billion; 0.425% of the  portion of such daily net
assets exceeding  $2 billion  but  not exceeding  $2.5  billion; 0.40%  of  that
portion  of such daily  net assets exceeding  $2.5 billion but  not exceeding $5
billion; 0.375% of that  portion of such daily  net assets exceeding $5  billion
but  not exceeding $7.5 billion; 0.35% of  that portion of such daily net assets
exceeding $7.5 billion but not exceeding $10 billion; 0.325% of that portion  of
such daily net assets exceeding $10 billion but not exceeding $12.5 billion; and
0.30%  of that portion of  such daily net assets  exceeding $12.5 billion. Total
operating expenses of the Fund are subject to applicable limitations under rules
and regulations of states where  the Fund is authorized  to sell its shares,  as
the  same may  be amended  from time  to time.  Presently, the  most restrictive
limitation is  as follows.  If in  any fiscal  year the  Fund's total  operating
expenses,  exclusive of taxes,  interest, distribution fees,  brokerage fees and
extraordinary expenses (to the extent  permitted by applicable state  securities
laws  and regulations), exceed 2 1/2% of  the first $30,000,000 of average daily
net assets, 2% of the next $70,000,000 of average daily net assets and 1 1/2% of
any excess over $100,000,000, the Investment Manager will reimburse the Fund for
the amount of such  excess. Such amount,  if any, will  be calculated daily  and
credited  on a monthly basis. For the fiscal years ended December 31, 1991, 1992
and 1993,  the Fund  accrued to  the Investment  Manager total  compensation  of
$41,955,196, $47,032,617 and $48,270,568, respectively. During such periods, the
Fund's expenses did not exceed the expense limitation.
    
 
    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  does  not restrict  the Investment  Manager  from
acting as investment manager or adviser to others.
 
   
    The Agreement was initially approved by the Trustees on October 30, 1992 and
by  the shareholders at a Meeting of  Shareholders held on January 12, 1993. The
Agreement is substantially identical to a prior investment management  agreement
which  was initially approved by  the Trustees on April 16,  1984, by DWR as the
then sole shareholder of  the Fund on  May 1, 1994, and,  as such agreement  had
been  amended  to  provide  for  breakpoints  in  the  management  fee,  by  the
shareholders of the Fund at  a Meeting of Shareholders  held on April 22,  1985.
The  Agreement took effect on June 30,  1993 upon the spin-off by Sears, Roebuck
and Co. of its remaining shares of DWDC. 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  (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 will continue in effect until April 30, 1994
and 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 or "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.
    
 
   
    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
    
 
                                       5
<PAGE>
   
Witter". The Fund has also agreed that in the event the Agreement 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  Dean Witter  Funds and  the TCW/DW  Funds are  shown
below.
    
 
<TABLE>
<CAPTION>
  NAME, POSITION WITH FUND AND ADDRESS                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ----------------------------------------  ----------------------------------------------------------------------
<S>                                       <C>
Jack F. Bennett                           Retired; Director or Trustee of the Dean Witter Funds; formerly Senior
Trustee                                   Vice  President and Director of Exxon Corporation (1975-January, 1989)
141 Taconic Road                          and  Under  Secretary  of  the  U.S.  Treasury  for  Monetary  Affairs
Greenwich, Connecticut                    (1974-1975);  Director of  Philips Electronics  N.V., Tandem Computers
                                          Inc. and Massachusetts Mutual  Insurance Company; director or  trustee
                                          of various not-for-profit and business organizations.
   
Charles A. Fiumefreddo*                   Chairman,  Chief  Executive  Officer  and  Director  of  InterCapital,
Chairman of the Board, President,         Distributors and DWSC; Executive Vice  President and Director of  DWR;
Chief Executive Officer and Trustee       Chairman,  Director or Trustee, President  and Chief Executive Officer
Two World Trade Center                    of the  Dean  Witter  Funds; Chairman,  Chief  Executive  Officer  and
New York, New York                        Trustee  of the  TCW/DW Funds;  Chairman and  Director of  Dean Witter
                                          Trust Company; Director and/or  officer of various DWDC  subsidiaries;
                                          formerly   Executive  Vice  President  and  Director  of  DWDC  (until
                                          February, 1993).
    
Edwin J. Garn                             Director or Trustee of the  Dean Witter Funds; formerly United  States
Trustee                                   Senator  (R-Utah) (1974-1992)  and Chairman,  Senate Banking Committee
2000 Eagle Gate Tower                     (1980-1986); formerly  Mayor  of  Salt Lake  City,  Utah  (1971-1974);
Salt Lake City, Utah                      formerly  Astronaut, Space Shuttle Discovery (April 12-19, 1985); Vice
                                          Chairman, Huntsman Chemical Corporation (since January, 1993);  Member
                                          of the board of various civic and charitable organizations.
John R. Haire                             Chairman  of the Audit Committee and  Chairman of the Committee of the
Trustee                                   Independent Directors or Trustees and Director or Trustee of the  Dean
439 East 51st Street                      Witter Funds; Trustee of the TCW/DW Funds; formerly President, Council
New York, New York                        for  Aid to  Education (1978 -  October, 1989) and  Chairman and Chief
                                          Executive  Officer  of  Anchor  Corporation,  an  Investment   Adviser
                                          (1964-1978);  Director of Washington  National Corporation (insurance)
                                          and Bowne & Co., Inc. (printing).
</TABLE>
 
                                       6
<PAGE>
<TABLE>
   
<CAPTION>
  NAME, POSITION WITH FUND AND ADDRESS                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ----------------------------------------  ----------------------------------------------------------------------
<S>                                       <C>
Dr. John E. Jeuck                         Retired; Director or Trustee of the Dean Witter Funds; formerly Robert
Trustee                                   Law Professor of Business Administration, Graduate School of Business,
70 East Cedar Street                      University of Chicago (until July, 1989); Business consultant.
Chicago, Illinois
Dr. Manuel H. Johnson                     Senior Partner, Johnson Smick International, Inc., a consulting  firm;
Trustee                                   Koch  Professor of International Economics  and Director of the Center
7521 Old Dominion Drive                   for Global Market  Studies at George  Mason University (since  Septem-
McLean, Virginia                          ber,  1990); Co-Chairman and  a founder of the  Group of Seven Council
                                          (G7C), an international economic  commission (since September,  1990);
                                          Director  or Trustee of  the Dean Witter Funds;  Trustee of the TCW/DW
                                          Funds; Director of  Greenwich Capital  Markets, Inc.  (broker-dealer);
                                          formerly  Vice  Chairman  of the  Board  of Governors  of  the Federal
                                          Reserve System (February, 1986-August,  1990) and Assistant  Secretary
                                          of the U.S. Treasury (1982-1986).
Paul Kolton                               Director  or Trustee of  the Dean Witter Funds;  Chairman of the Audit
Trustee                                   Committee and Chairman  of the Committee  of the Independent  Trustees
9 Hunting Ridge Road                      and  Trustee of the  TCW/DW Funds; formerly  Chairman of the Financial
Stamford, Connecticut                     Accounting Standards Advisory Council and Chairman and Chief Executive
                                          Officer of  the American  Stock Exchange;  Director of  UCC  Investors
                                          Holding Inc. (Uniroyal Chemical Company, Inc.); director or trustee of
                                          various not-for-profit organizations.
Michael E. Nugent                         General   Partner,   Triumph  Capital,   LP.,  a   private  investment
Trustee                                   partnership (since  April,  1988); Director  or  Trustee of  the  Dean
237 Park Avenue                           Witter  Funds; Trustee of  the TCW/DW Funds;  formerly Vice President,
New York, New York                        Bankers  Trust  Company   and  BT   Capital  Corporation   (September,
                                          1984-March 1988); Director of various business organizations.
Albert T. Sommers                         Senior  Fellow and Economic Counselor  (formerly Senior Vice President
Trustee                                   and Chief Economist)  of the  Conference Board,  a nonprofit  business
845 Third Avenue                          research organization; President, Albert T. Sommers, Inc., an economic
New York, New York                        consulting  firm;  Director  or  Trustee  of  the  Dean  Witter Funds;
                                          formerly Chairman, Price Advisory Committee of the Council on Wage and
                                          Price Stability (December, 1979-December, 1980); Economic Adviser, The
                                          Ford Foundation; Director of Grow  Group, Inc. (chemicals), MSI,  Inc.
                                          (medical services) and Westbridge Capital, Inc. (insurance).
    
</TABLE>
 
                                       7
<PAGE>
   
<TABLE>
<CAPTION>
  NAME, POSITION WITH FUND AND ADDRESS                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ----------------------------------------  ----------------------------------------------------------------------
<S>                                       <C>
Edward R. Telling*                        Retired;  Director  or  Trustee  of the  Dean  Witter  Funds; formerly
Sears Tower                               Chairman of the Board of Directors and Chief Executive Officer  (until
Chicago, Illinois                         December, 1985) and President (from January, 1981-March, 1982 and from
                                          February,  1984-August,  1984)  of Sears,  Roebuck  and  Co.; formerly
                                          Director of Sears, Roebuck and Co.
Sheldon Curtis                            Senior Vice President, Secretary  and General Counsel of  InterCapital
Vice President, Secretary and General     and  DWSC; Senior  Vice President and  Secretary of  Dean Witter Trust
Counsel                                   Company; Senior  Vice  President, Assistant  Secretary  and  Assistant
Two World Trade Center                    General  Counsel of Distributors; Assistant Secretary of DWDC and DWR;
New York, New York                        Vice President, Secretary and General Counsel of the Dean Witter Funds
                                          and the TCW/DW Funds.
Rajesh K. Gupta                           Senior Vice President of InterCapital (since May 1991); Vice President
Vice President                            of  various   Dean  Witter   Funds;  previously   Vice  President   of
Two World Trade Center                    InterCapital.
New York, New York
Thomas F. Caloia                          First  Vice President (since May, 1991) and Assistant Treasurer (since
Treasurer                                 January, 1993)  of InterCapital;  First Vice  President and  Assistant
Two World Trade Center                    Treasurer  of DWSC; Treasurer of the  Dean Witter Funds and the TCW/DW
New York, New York                        Funds; previously Vice President of InterCapital.
<FN>
- ------------------------
 *Denotes Trustees who are "Interested persons"  of the Fund, as defined in  the
  Act.
</TABLE>
    
 
   
    In  addition, Robert M. Scanlan, President  of InterCapital, David A. Hughey
and Edmund C. Puckhaber, Executive Vice Presidents of InterCapital, and Peter M.
Avelar, Jonathan  R. Page  and  James F.  Willison,  Senior Vice  Presidents  of
InterCapital,  are  Vice Presidents  of  the Fund,  and  Barry Fink,  First Vice
President and Assistant General Counsel of InterCapital, and Marilyn K. Cranney,
Lawrence S.  Lafer, Lou  Anne D.  McInnis and  Ruth Rossi,  Vice Presidents  and
Assistant  General Counsels  of InterCapital,  are Assistant  Secretaries of the
Fund.
    
 
   
    The Fund pays each Trustee who is not an employee or former employee of  the
Investment  Manager or  an affiliated  company an  annual fee  of $1,200 ($1,600
prior to December 31, 1993) plus $50 for each meeting of the Board of  Trustees,
the  Audit Committee or  the Committee of the  Independent Trustees, attended by
the Trustee in  person (the Fund  pays the  Chairman of the  Audit Committee  an
additional annual fee of $1,000 ($1,200 prior to December 31, 1993) and pays the
Chairman  of the Committee of the Independent  Trustees an annual fee of $2,400,
in each case inclusive of the Committee meeting fees). 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.  The Fund  has
adopted  a retirement  program under  which an  Independent Trustee  who retires
after a  minimum required  period of  service would  be entitled  to  retirement
payments  upon reaching the  eligible retirement age  (normally, after attaining
age 72) based upon length of service  and computed as a percentage of  one-fifth
of  the total compensation earned by such Trustee for service to the Fund in the
five-year period prior to the date  of the Trustee's retirement. No  Independent
Trustee  has retired since  the adoption of  the program and  no payments by the
Fund have been made under the program to any Trustee. For the fiscal year  ended
December  31, 1993, the Fund  accrued a total of  $35,798 for Trustees' fees and
expenses and benefits under the retirement program.
    
 
                                       8
<PAGE>
   
As of the date of this Statement of Additional Information, the aggregate 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 outstanding.
    
 
INVESTMENT PRACTICES AND POLICIES
- --------------------------------------------------------------------------------
 
    As  discussed in  the Prospectus,  the Fund  may only  invest in obligations
issued or  guaranteed by  the U.S.  Government or  its instrumentalities  ("U.S.
Government  Securities"). All such obligations are backed by the "full faith and
credit" of  the  United  States.  Investments may  be  made  in  obligations  of
instrumentalities  of  the  U.S.  Government  only  where  such  obligations are
guaranteed by the U.S. Government.
 
    ZERO COUPON  SECURITIES.    A  portion of  the  U.S.  Government  securities
purchased  by the Fund may be "zero  coupon" Treasury securities. These are U.S.
Treasury bills, notes  and bonds  which have  been stripped  of their  unmatured
interest  coupons and receipts or  which are certificates representing interests
in such  stripped debt  obligations and  coupons. "Zero  coupon" securities  are
purchased  at a discount from their face  amount, giving the purchaser the right
to receive their full value at maturity. A zero coupon security pays no interest
to its  holder  during its  life.  Its value  to  an investor  consists  of  the
difference  between its  face value at  the time  of maturity and  the price for
which it was acquired, which is generally an amount significantly less than  its
face value (sometimes referred to as a "deep discount" price).
 
    The  interest  earned  on  such  securities  is,  implicitly,  automatically
compounded and paid out at maturity.  While such compounding at a constant  rate
eliminates  the risk of receiving lower  yields upon reinvestment of interest if
prevailing interest rates decline, the owner  of a zero coupon security will  be
unable to participate in higher yields upon reinvestment of interest received if
prevailing  interest rates  rise. For  this reason,  zero coupon  securities are
subject to substantially  greater market  price fluctuations  during periods  of
changing  prevailing interest  rates than  are comparable  debt securities which
make current distributions of interest. Current federal tax law requires that  a
holder  (such as  the Fund) of  a zero coupon  security accrue a  portion of the
discount at which the security was purchased as income each year even though the
Fund receives no interest payments in cash on the security during the year.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    The investment restrictions listed  below have been adopted  by the Fund  as
fundamental policies, which may not be changed without the vote of a majority of
the  outstanding voting securities  of the Fund,  as defined in  the Act. Such a
majority is defined as the lesser of (a) 67% of the shares present at a  meeting
of  shareholders, if the holders  of more than 50%  of the outstanding shares of
the Fund  are present  or represented  by proxy,  or (b)  more than  50% of  the
outstanding  shares of the Fund. 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 (b)
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 Fund may not:
 
        1.   Purchase any securities other than obligations issued or guaranteed
    by the United  States Government. Such  obligations are backed  by the  full
    faith  and credit of the  United States. There is no  limit on the amount of
    its assets which may be invested in the securities of any one issuer of such
    obligations.
 
        2.  Borrow money except from banks for temporary or emergency  purposes,
    including  the meeting of redemption  requests which might otherwise require
    the untimely disposition of securities.  Borrowing in the aggregate may  not
    exceed 20%, and borrowing for purposes other than
 
                                       9
<PAGE>
    meeting  redemptions may  not exceed  5%, of the  value of  the Fund's total
    assets (including the amount borrowed) at the time the borrowing is made. It
    is the  Fund's  current intention  not  to  borrow for  other  than  meeting
    redemptions  requests.  Borrowings in  excess of  5%  will be  repaid before
    additional investments  are made.  Interest on  borrowings will  reduce  net
    investment income.
 
        3.    Pledge, hypothecate,  mortgage or  otherwise encumber  its assets,
    except in an amount  not exceeding 10%  of the value of  its net assets  but
    only to secure borrowings for temporary or emergency purposes.
 
        4.  Sell securities short or purchase securities on margin.
 
        5.  Make loans to others except through the purchase of debt obligations
    in accordance with the Fund's investment objective and policies.
 
        6.   Issue senior securities as defined in the Act except insofar as the
    Fund may be  deemed to have  a senior  security by reason  of (a)  borrowing
    money  in  accordance  with  restriction  (2)  described  above,  or  (b) by
    purchasing  securities  on  a  when-issued  or  delayed  delivery  basis  or
    purchasing or selling securities on a forward commitment basis.
 
        7.   Underwrite the  securities of other  issuers or purchase restricted
    securities.
 
        8.  Purchase or sell real estate or interests therein, although the Fund
    may purchase securities of  issuers which engage  in real estate  operations
    and securities which are secured by real estate or interests therein.
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
- --------------------------------------------------------------------------------
 
   
    Subject to the general supervision of the Board of Trustees of the Fund, the
Investment  Manager is responsible for the  investment decisions and the placing
of the orders  for portfolio  transactions for  the Fund.  The Fund's  portfolio
transactions will occur primarily with issuers, underwriters or major dealers in
U.S.  Government Securities acting as principals. Such transactions are normally
on a net basis which do not  involve payment of brokerage commissions. The  cost
of  securities purchased from an underwriter  usually includes a commission paid
by the issuer to  the underwriters; transactions  with dealers normally  reflect
the  spread between bid and asked prices. During the fiscal years ended December
31, 1991, 1992 and 1993, the Fund did not pay any brokerage commissions.
    
 
    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,  the  main
factors  considered are 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.
 
    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 prices 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.
 
                                       10
<PAGE>
    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 every case, 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 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 Securities.  Such
transactions will be effected with DWR only when the price available from DWR is
better than that available from other dealers.
 
   
    Consistent  with  the  policy  described  above,  brokerage  transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through DWR. In order for DWR to effect portfolio transactions for  the
Fund,  the  commissions, fees  or  other remuneration  received  by DWR  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 DWR  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, have
adopted  procedures  which   are  reasonably  designed   to  provide  that   any
commissions,  fees or  other remuneration  paid to  DWR are  consistent with the
foregoing standard. For the fiscal years ended December 31, 1991, 1992 and 1993,
the Fund did not effect any securities transactions with or through DWR.
    
 
THE DISTRIBUTOR
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, shares  of the Fund are distributed by  Dean
Witter Distributors Inc. (the "Distributor"). The Distributor has entered into a
selected  dealer agreement  with DWR, which  through its  own sales organization
sells shares of the Fund. In  addition, the Distributor may enter into  selected
dealer  agreements  with  other  selected  broker-dealers.  The  Distributor,  a
Delaware corporation, is a wholly-owned subsidiary of DWDC. The Trustees who are
not, and were not  at the time  they voted, interested persons  of the Fund,  as
defined in the Act (the "Independent Trustees"), approved, at their meeting held
on   October  30,  1992,  the  current  Distribution  Agreement  appointing  the
Distributor as 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,  1994,  and
provides  that it will remain in effect from year to year thereafter if approved
by the Board.
    
 
    The Distributor bears all expenses incurred in providing services under  the
Distribution  Agreement. Such  expenses include  the payment  of commissions for
sales of the Fund's shares and incentive compensation to account executives. The
Distributor also pays certain  expenses in connection  with the distribution  of
the  Fund's shares, including the costs  of preparing, printing and distributing
advertising or promotional materials, and the costs of printing and distributing
prospectuses and supplements thereto  used in connection  with the offering  and
sale of the Fund's shares to other than current shareholders. The Fund bears the
costs  of  initial typesetting,  printing and  distribution of  prospectuses and
supplements  thereto  to  shareholders.  The  Fund  also  bears  the  costs   of
registering the Fund and its shares under federal and state securities laws. The
Fund  and the  Distributor have agreed  to indemnify each  other against certain
liabilities, including liabilities under the Securities Act of 1933, as amended.
Under the  Distribution Agreement,  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.
 
                                       11
<PAGE>
   
    PLAN  OF DISTRIBUTION.  The Fund has adopted a Plan of Distribution pursuant
to Rule 12b-1 under  the Act (the  "Plan") pursuant to which  the Fund pays  the
Distributor compensation accrued daily and payable monthly at the annual rate of
0.75%  (0.65% of  amounts over $10  billion) of  the lesser of:  (a) the average
daily aggregate gross sales of the Fund's shares since the inception of the Fund
(not including reinvestments of dividends or capital gains distributions),  less
the  average daily aggregate net asset value of the Fund's shares redeemed since
the Fund's inception  upon which  a contingent  deferred sales  charge has  been
imposed  or upon which such charge has been waived, or (b) the average daily net
assets of the  Fund. The Distributor  also receives the  proceeds of  contingent
deferred  sales  charges imposed  on certain  redemptions  of shares,  which are
separate and apart from payments made pursuant to the Plan (see "Redemptions and
Repurchases --  Contingent  Deferred  Sales  Charge"  in  the  Prospectus).  The
Distributor  has informed  the Fund  that it  and/or DWR  received approximately
$9,399,000, $10,659,000 and $12,629,000 in contingent deferred sales charges for
the fiscal years ended December 31,  1991, 1992 and 1993, respectively, none  of
which was retained by the Distributor.
    
 
   
    The  Plan was adopted by a majority vote of the Board of Trustees, including
all of the Trustees of the Fund 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 the Plan  (the "Independent 12b-1 Trustees"),  cast in person at  a
meeting  called for the purpose of voting on the Plan, on April 16, 1984, by DWR
as the then sole shareholder of the Fund on May 1, 1984, and by the shareholders
holding a majority, as defined in the Act, of the outstanding voting  securities
of the Fund at a Meeting of Shareholders of the Fund held on April 22, 1985.
    
 
    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  the  reorganization  described  above  the  share  distribution
activities  theretofore  performed  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 DWR 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.
 
   
    Under  the Plan  and as  required by  Rule 12b-1,  the Trustees  receive and
review promptly after the end of each calendar quarter a written report provided
by the Distributor of the amounts expended by the Distributor under the Plan and
the purpose for  which such  expenditures were  made. The  Fund accrued  amounts
payable  to DWR under the Plan, during  the fiscal year ended December 31, 1993,
of $91,852,480. This amount is equal to 0.73% of the average daily net assets of
the Fund for the fiscal year and was calculated pursuant to clause (b) under the
Plan. This  amount is  treated by  the Fund  as an  expense in  the year  it  is
accrued.
    
 
   
    The  Distributor has informed the Fund that a portion of the fees payable by
the Fund each year  pursuant to the  Plan equal to 0.20%  of the Fund's  average
daily  net assets is  characterized as a  "service fee" under  the Rules of Fair
Practice of the National Association of  Securities Dealers, Inc. (of which  the
Distributor is a member). Such portion of the fee is a payment made for personal
service and/or the maintenance of shareholder accounts. The remaining portion of
the  Plan fees  payable by  the Fund is  characterized as  an "asset-based sales
charge" as such is defined by the aforementioned Rules of Fair Practice.
    
 
    The Plan was  adopted in order  to permit the  implementation of the  Fund's
method  of distribution. Under  this distribution method shares  of the Fund are
sold without a sales load  being deducted at the time  of purchase, so that  the
full amount of an investor's purchase payment will be invested in shares without
any  deduction  for  sales charges.  Shares  of the  Fund  may be  subject  to a
contingent deferred sales charge, payable to the Distributor, if redeemed during
the six years after  their purchase. DWR compensates  its account executives  by
paying   them,  from   its  own   funds,  commissions   for  the   sale  of  the
 
                                       12
<PAGE>
   
Fund's shares, currently a gross sales credit of up to 4% of the amount sold and
an annual residual  commission of up  to 0.20 of  1% of the  current value  (not
including  reinvested dividends and distributions) of the amount sold. The gross
sales credit is a charge which reflects  commissions paid by DWR to its  account
executives  and DWR's  Fund associated  distribution-related expenses, including
sales compensation  and overhead  and other  branch office  distribution-related
expenses  including:  (a)  the expenses  of  operating DWR's  branch  offices in
connection with the sale of Fund shares, including lease costs, the salaries and
employee benefits  of operations  and sales  support personnel,  utility  costs,
communications  costs and the costs of stationery and supplies, (b) the costs of
client sales seminars, (c) travel expenses of mutual fund sales coordinators  to
promote  the  sale of  Fund shares  and  (d) other  expenses relating  to branch
promotion of  Fund  share  sales.  The distribution  fee  that  the  Distributor
receives  from the Fund under the Plan, in effect, offsets distribution expenses
incurred under the Plan on behalf of the Fund and opportunity costs, such as the
gross sales credit and an  assumed interest charge thereon ("carrying  charge").
In  the Distributor's reporting  of the distribution expenses  to the Fund, such
assumed interest (computed at the "broker's  call rate") has been calculated  on
the  gross sales credit as it is  reduced by amounts received by the Distributor
under the  Plan  and any  contingent  deferred  sales charges  received  by  the
Distributor  upon redemption of shares of the  Fund. No other interest charge is
included as  a distribution  expense  in the  Distributor's calculation  of  its
distribution costs for this purpose. The broker's call rate is the interest rate
charged to securities brokers on loans secured by exchange-listed securities.
    
 
   
    The  Fund paid 100% of the $91,852,480 accrued under the Plan for the fiscal
year ended December 31, 1993 to the Distributor and DWR. The Distributor and DWR
estimate that they have spent, pursuant to the Plan, $1,052,742,090 on behalf of
the Fund since the inception of the  Plan. It is estimated that this amount  was
spent in approximately the following ways: (i) 0.44% ($4,605,720) -- advertising
and  promotional expenses; (ii)  0.12% ($1,253,056) --  printing of prospectuses
for  distribution  to  other  than   current  shareholders;  and  (iii)   99.44%
($1,046,883,314  -- other  expenses, including  the gross  sales credit  and the
carrying charge,  of which  14.51% ($151,892,414)  represents carrying  charges,
35.32%  ($369,810,240) represents commission  credits to DWR  branch offices for
payments  of  commissions  to  account  executives  and  50.17%   ($525,180,660)
represents overhead and other branch office distribution-related expenses.
    
 
   
    At  any given time, the  expenses of distributing shares  of the Fund may be
more or less than the total of (i) the payments made by the Fund pursuant to the
Plan and  (ii)  the  proceeds  of contingent  deferred  sales  charges  paid  by
investors  upon redemption of shares. The  Distributor has advised the Fund that
the excess expenses, including the  carrying charge designed to approximate  the
opportunity  costs incurred  by DWR which  arise from it  having advanced monies
without having received the amount of any  sales charges imposed at the time  of
sale  of  the Fund's  shares,  totalled $209,279,716  as  of December  31, 1993.
Because there  is  no  requirement  under  the  Plan  that  the  Distributor  be
reimbursed  for all  distribution expenses or  any requirement that  the Plan be
continued from year to year, this excess amount does not constitute a  liability
of  the Fund. Although there is no legal obligation for the Fund to pay expenses
incurred in excess of payments  made to the Distributor  under the Plan and  the
proceeds  of contingent deferred sales charges paid by investors upon redemption
of shares, if for any reason the Plan is terminated, the Trustees will  consider
at that time the manner in which to treat such expenses. Any cumulative expenses
incurred, but not yet recovered through distribution fees or contingent deferred
sales  charges, may or may not be  recovered through future distribution fees or
contingent deferred sales charges.
    
 
   
    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, has any direct financial
interest in the operation of the Plan except to the extent that the Distributor,
InterCapital, DWR, or certain of their 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.
    
 
   
    Under its terms, the  Plan remained in effect  until December 31, 1984,  and
will  continue  from  year  to year  thereafter,  provided  such  continuance is
approved   annually   by   a    vote   of   the    Trustees   in   the    manner
    
 
                                       13
<PAGE>
   
described  above. The most  recent continuance of  the Plan for  one year, until
April 30, 1994, was approved by the  Board of Trustees of the Fund, including  a
majority of the Independent 12b-1 Trustees, at a Board meeting held on April 28,
1993.  At that  meeting, the Trustees,  including a majority  of the Independent
12b-1 Trustees,  also  approved certain  technical  amendments to  the  Plan  in
connection  with  recent  amendments  adopted  by  the  National  Association of
Securities Dealers, Inc. to its Rules  of Fair Practice. Prior to approving  the
continuation  of  the  Plan,  the  Trustees  requested  and  received  from  the
Distributor and  reviewed all  the information  which they  deemed necessary  to
arrive  at an informed determination. In  making their determination to continue
the Plan, the Trustees considered: (1) the Fund's experience under the Plan  and
whether such experience indicates that the Plan is operating as anticipated; (2)
the  benefits the Fund had obtained, was  obtained and would be likely to obtain
under the Plan; and (3) what services  had been provided and were continuing  to
be  provided under the Plan  to the Fund and  its shareholders. Based upon their
review, the  Trustees of  the  Fund, including  each  of the  Independent  12b-1
Trustees, determined that continuation of the Plan would be in the best interest
of  the Fund and would have a reasonable likelihood of continuing to benefit the
Fund and its shareholders. In the  Trustees' quarterly review of the Plan,  they
will  consider  its  continued  appropriateness and  the  level  of compensation
provided herein.
    
 
   
    The Plan may not be  amended to increase materially  the amount to be  spent
for  the services described therein without  approval by the shareholders of the
Fund, and all  material amendments  to the  Plan must  also 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 a majority of the Independent  12b-1
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 election  and
nomination of Independent 12b-1 Trustees shall be committed to the discretion of
the Independent 12b-1 Trustees.
    
 
DETERMINATION OF NET ASSET VALUE
 
    As  discussed in the Prospectus, the net asset  value of a share of the Fund
is determined once daily at  4:00 p.m., New York time  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; Presidents' Day; Good Friday; Memorial  Day;
Independence Day; Labor Day; Thanksgiving Day; and Christmas Day.
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
   
    Upon the purchase of shares of the Fund, a Shareholder Investment Account is
opened  for the investor on  the books of the Fund  and maintained by the Fund's
Transfer Agent, Dean  Witter Trust Company  (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
transaction takes place in the  Shareholder Investment Account, the  shareholder
will  be mailed a confirmation  of the transaction from the  Fund or from DWR or
other selected broker-dealer.
    
 
   
    AUTOMATIC INVESTMENT  OF DIVIDENDS  AND  DISTRIBUTIONS.   As stated  in  the
Prospectus,   all  income   dividends  and   capital  gains   distributions  are
automatically paid  in  full and  fractional  shares  of the  Fund,  unless  the
shareholder  requests that they be paid in  cash. Each purchase of shares of the
Fund is made upon the condition that the Transfer Agent is thereby automatically
appointed as agent of  the investor to receive  all dividends and capital  gains
distributions  on shares owned by the investor. Such dividends and distributions
will be paid, at  the net asset value  per share, in shares  of the Fund (or  in
cash  if the shareholder so requests) as of the close of business on the monthly
payment date, as stated in the Prospectus.  At any time an investor may  request
the  Transfer Agent,  in writing,  to have  subsequent dividends  and/or capital
gains distributions paid to  him or her  in cash rather  than shares. To  assure
sufficient  time to process the change, such request be received by the Transfer
Agent at least five business days prior  to the payment date of the dividend  or
the record date of the distribution. In the case
    
 
                                       14
<PAGE>
   
of  recently purchased shares for which  registration instructions have not been
received on the payment  or record date,  cash payments will be  made to DWR  or
other selected broker-dealer, and will be forwarded to the shareholder, upon the
receipt of proper instructions.
    
 
   
    TARGETED  DIVIDENDS.-SM-    In  states  where  it  is  legally  permissible,
shareholders may also have all income dividends and capital gains  distributions
automatically invested in shares of an open-end Dean Witter Fund other than Dean
Witter  U.S.  Government  Securities  Trust. Such  investment  will  be  made as
described above for automatic investment in shares of the Fund, at the net asset
value per share of the selected Dean Witter Fund as of the close of business  on
the  monthly  payment date  and will  begin to  earn dividends,  if any,  in the
selected Dean Witter Fund the next business day. To participate in the  Targeted
Dividends  program,  shareholders should  contact  their DWR  or  other selected
broker-dealer account executive or the Transfer Agent. Shareholders of the  Fund
must  be shareholders  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.
    
 
   
    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
existing  account at the  net asset value  calculated the same  business day the
transfer of  funds is  effected.  For further  information  or to  subscribe  to
EasyInvest,   shareholders   should  contact   their   DWR  or   other  selected
broker-dealer account executive or the Transfer Agent.
    
 
   
    INVESTMENT OF DIVIDENDS OR DISTRIBUTIONS RECEIVED IN CASH.  Any  shareholder
who   receives  a  cash  payment  representing   a  dividend  or  capital  gains
distribution may  invest  such dividend  or  distribution at  net  asset  value,
without the imposition of a contingent deferred sales charge upon redemption, by
returning  the check or  the proceeds to  the Transfer Agent  within thirty days
after the payment date. If the shareholder returns the proceeds of a dividend or
distribution, such funds must  be accompanied by  a signed statement  indicating
that  the proceeds  constitute a dividend  or distribution to  be invested. Such
investment will be made at the net  asset value per share next determined  after
receipt of the check or proceeds by the Transfer Agent.
    
 
    SYSTEMATIC  WITHDRAWAL PLAN.   As discussed in  the Prospectus, a systematic
withdrawal plan (the "Withdrawal Plan") is available for shareholders who own or
purchase shares of the  Fund having a  minimum value of  $10,000 based upon  the
then  current  net asset  value.  The Withdrawal  Plan  provides for  monthly or
quarterly (March, June, September and December) checks in any dollar amount, not
less then  $25,  or in  any  whole percentage  of  the account  balance,  on  an
annualized  basis.  Any  applicable  contingent deferred  sales  charge  will be
imposed on  shares redeemed  under  the Withdrawal  Plan (see  "Redemptions  and
Repurchases--Contingent  Deferred Sales  Charge" in  the Prospectus). Therefore,
any shareholder participating in the Withdrawal Plan will have sufficient shares
redeemed from his or  her account so  that the proceeds  (net of any  applicable
contingent  deferred sales  charge) to  the shareholder  will be  the designated
monthly or quarterly amount.
 
   
    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 following 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  business days after  the
date  of redemption. The  Withdrawal Plan may  be terminated at  any time by the
Fund.
    
 
   
    Withdrawal Plan payments should  not be considered  as dividends, yields  or
income.  If periodic withdrawal plan payments continuously exceed net investment
income and  net capital  gains, the  shareholder's original  investment will  be
correspondingly reduced and ultimately exhausted.
    
 
                                       15
<PAGE>
   
    Each  withdrawal constitutes  a redemption  of shares  and any  gain or loss
realized must  be  recognized for  federal  income tax  purposes.  Although  the
shareholder  may  make  additional  investments  of  $2,500  or  more  under the
Withdrawal Plan, withdrawals made currently with purchases of additional  shares
may be inadvisable because of the contingent deferred sales charge applicable to
the  redemption  of  shares  purchased  during  the  preceding  six  years  (see
"Redemptions and Repurchases-- Contingent Deferred Sales Charge").
    
 
    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  acceptable   to  the  Transfer   Agent
(shareholders  should  contact  the Transfer  Agent  for a  determination  as to
whether a particular institution is  such 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  "Redemptions   and
Repurchases" in the Prospectus) at any time.
 
    DIRECT  INVESTMENTS THROUGH TRANSFER AGENT.  As discussed in the Prospectus,
a shareholder may make additional investments in Fund shares at any time through
the Shareholder Investment Account  by sending a check  in any amount, not  less
than  $100, payable to Dean Witter U.S. Government Securities Trust, directly to
the Fund's Transfer Agent. Such amounts will be applied to the purchase of  Fund
shares at the net asset value per share next computed after receipt of the check
or  purchase payment  by the  Transfer Agent.  The shares  so purchased  will be
credited to the investor's account.
 
EXCHANGE PRIVILEGE
 
   
    As discussed in the Prospectus, the Fund makes available to its shareholders
an Exchange Privilege whereby shareholders of the Fund may exchange their shares
for shares of  other Dean  Witter Funds sold  with a  contingent deferred  sales
charge  ("CDSC 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 five  Dean Witter  Funds which are  money market  funds (the foregoing
eight non-CDSC  funds are  hereinafter  referred to  as the  "Exchange  Funds").
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. 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.)
 
   
    As described  below, and  in  the Prospectus  under the  captions  "Exchange
Privilege"  and "Contingent Deferred Sales  Charge", a contingent deferred sales
charge ("CDSC")  may be  imposed upon  a redemption,  depending on  a number  of
factors,  including the number of years from the time of purchase until the time
of redemption or  exchange ("holding period").  When shares of  the Fund or  any
other  CDSC fund are exchanged  for shares of an  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
    
 
                                       16
<PAGE>
   
time  the shareholder remains in the Exchange Fund (calculated from the last day
of the  month in  which the  Exchange Fund  shares were  acquired), 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 CDSC fund. However,  in
the case of shares of the Fund 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 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 CDSC  fund from the  Exchange Fund, with  no CDSC being  imposed on such
exchange. The holding period previously frozen when shares were first  exchanged
for  shares of the Exchange Fund, resumes on  the last day of the month in which
shares of a CDSC fund  are reacquired. A CDSC is  imposed only upon an  ultimate
redemption,  based upon the time (calculated as described above) the shareholder
was invested in a CDSC fund.
    
 
    In addition, shares of the  Fund may be acquired  in exchange for shares  of
Dean  Witter Funds sold  with a front-end sales  charge ("front-end sales charge
funds"), but shares  of the  Fund, however acquired,  may not  be exchanged  for
shares  of  front-end sales  charge funds.  Shares  of a  CDSC fund  acquired in
exchange for shares of a front-end sales charge fund (or in exchange for  shares
of  other Dean Witter  Funds for which  shares of a  front-end sales charge fund
have been exchanged) are not subject to any CDSC upon their redemption.
 
   
    When shares initially purchased in a  CDSC fund are exchanged for shares  of
another  CDSC fund, or for  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  the 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 t ime of the exchange which were (i) purchased more than 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  front-end  sales
charge  funds, or  for shares  of other  Dean Witter  Funds for  which shares of
front-end sales charge funds have been  exchanged (all such shares called  "Free
Shares"),  will be  exchanged first. Shares  of Dean Witter  American Value Fund
acquired prior  to  April  30,  1984, shares  of  Dean  Witter  Dividend  Growth
Securities  Inc. and  Dean Witter  Natural Resource  Development Securities Inc.
acquired prior  to July  2, 1984,  and  shares of  Dean Witter  Strategist  Fund
acquired  prior to November 8, 1989, are also considered Free Shares and will be
the first Free Shares to be  exchanged. After an exchange, all dividends  earned
on shares in Dean Witter Short-Term U.S. Treasury Trust or the money market 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 procedures described in
    
 
                                       17
<PAGE>
the 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.
 
    The  Transfer Agent acts as agent for  shareholders of the Fund in effecting
redemptions of Fund shares and in applying the proceeds to the purchase of other
fund shares. In  the absence  of negligence on  its part,  neither the  Transfer
Agent  nor the Fund shall be liable for  any redemption of Fund shares caused by
unauthorized telephone or telegraph instructions. Accordingly, in such event the
investor shall bear the risk of loss.  The staff of the Securities and  Exchange
Commission is currently considering the propriety of such a policy.
 
   
    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  the Distributor  and for  the  shareholder's
selected  broker-dealer,  if  any, in  the  performance of  such  functions. 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, the Distributor  or
any selected broker-dealer.
    
 
   
    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 the purchase of 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.
    
 
   
    Exchanges are subject to  the minimum investment  requirement and any  other
conditions  imposed by each fund. (The  minimum initial investment is $5,000 for
Dean Witter Liquid  Asset Fund Inc.,  Dean Witter Tax-Free  Daily Income  Trust,
Dean  Witter California  Tax-Free Daily  Income Trust  and Dean  Witter New York
Municipal Money Market  Trust, although  those funds may,  at their  discretion,
accept  initial investments of as low  as $1,000. The minimum initial investment
is $10,000 for Dean  Witter Short-Term U.S. Treasury  Trust, although that  fund
may,  at its discretion, may  accept initial purchases of  as low as $5,000. The
minimum initial  investment  for 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 those 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  the Fund and/or any of  the 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  an
Exchange  Fund pursuant to the Exchange Privilege, and provided further that the
Exchange Privilege may  be terminated  or materially revised  without notice  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
(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, policies and restrictions.
    
 
   
    Shareholders  should  contact  their  DWR  or  other  selected broker-dealer
account executive  or  the Transfer  Agent  for further  information  about  the
Exchange Privilege.
    
 
                                       18
<PAGE>
   
REDEMPTIONS AND REPURCHASES
    
- --------------------------------------------------------------------------------
 
   
    REDEMPTION.  As stated in the Prospectus, shares of the Fund can be redeemed
for  cash at any time at the net asset value per share next determined; however,
such redemption  proceeds  may  be  reduced by  the  amount  of  any  applicable
contingent  deferred  sales  charges  (see  below).  If  shares  are  held  in a
shareholder's account  without  a  share  certificate,  a  written  request  for
redemption  to the Fund's Transfer Agent at  P.O. Box 983, Jersey City, NJ 07303
is required. if  certificates are  held by the  shareholder, the  shares may  be
redeemed by surrendering the certificates with a written request for redemption.
The  share  certificate, or  an accompanying  stock power,  and the  request for
redemption, must be  signed by the  shareholder or shareholders  exactly as  the
shares  are registered. Each request for  redemption, whether or not accompanied
by a share certificate, must  be sent to the  Fund's Transfer Agent, which  will
redeem  the shares at their net asset value next computed (see "Purchase of Fund
Shares" in the Prospectus)  after it receives the  request, and certificate,  if
any,  in good order. Any redemption request received after such computation will
be redeemed at the next determined net asset value. The term "good order"  means
that  the share  certificate, if  any, and  request for  redemption are properly
signed, accompanied by  any documentation  required by the  Transfer Agent,  and
bear  signature guarantees when required  by the Fund or  the Transfer Agent. If
redemption is requested by a  corporation, partnership, trust or fiduciary,  the
Transfer  Agent may require that written evidence of authority acceptable to the
Transfer Agent be submitted before such request is accepted.
    
 
   
    Whether certificates are  held by the  shareholder or shares  are held in  a
shareholder's  account, if the proceeds are to  be paid to any person other than
the record owner, or if the proceeds are to be paid to a corporation (other than
the Distributor or a selected broker-dealer for the account of the shareholder),
partnership, trust or fiduciary, or sent to the shareholder at an address  other
than  the  registered  address, 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
such an eligible guarantor). A  stock power may be  obtained from any dealer  or
commercial  bank. The Fund may change  the signature guarantee requirements from
time to  time upon  notice to  shareholders,  which may  be by  means of  a  new
prospectus.
    
 
   
    CONTINGENT DEFERRED SALES CHARGE.  As stated in the Prospectus, a contingent
deferred  sales charge ("CDSC") will be imposed on any redemption by an investor
if after such redemption the current value of the investor's shares of the  Fund
is  less  than the  dollar amount  of all  payments by  the shareholder  for the
purchase of Fund shares during the preceding six years. However, no CDSC will be
imposed to the extent that the net  asset value of the shares redeemed does  not
exceed:  (a) the current net asset value of shares purchased more than six years
prior to  the  redemption,  plus (b)  the  current  net asset  value  of  shares
purchased  through reinvestment  of dividends  or distributions  of the  Fund or
another Dean Witter  Fund (see  "Shareholder Services  -- Targeted  Dividends"),
plus  (c) the  current net asset  value of  shares acquired in  exchange for (i)
shares of Dean Witter front-end sales charge funds, or (ii) shares of other Dean
Witter Funds  for  which  shares  of front-end  sales  charge  funds  have  been
exchanged (see "Shareholder Services -- Exchange Privilege"), plus (d) increases
in  the  net asset  value of  the investor's  shares above  the total  amount of
payments for the purchase of Fund shares made during the preceding six years. In
addition, no CDSC will be imposed on redemptions of shares which were  purchased
by  the employee benefit plans established  by DWR and SPS Transaction Services,
Inc. (an affiliate of DWR) for their employees as qualified under Section 401(k)
of the Internal Revenue Code. The CDSC will be paid to the Distributor.
    
 
   
    In determining the applicability of the CDSC to each redemption, the  amount
which  represents an increase  in the net  asset value of  the investor's shares
above the amount of  the total payments  for the purchase  of shares within  the
last  six  years will  be redeemed  first.  In the  event the  redemption amount
exceeds such increase in value, the next portion of the amount redeemed will  be
the  amount  which  represents the  net  asset  value of  the  investor's shares
purchased more than six  years prior to the  redemption and/or shares  purchased
through  reinvestment of  dividends or  distributions and/or  shares acquired in
exchange for shares of Dean Witter front-end sales charge funds or for shares of
other Dean
    
 
                                       19
<PAGE>
   
Witter funds  for  which  shares  of front-end  sales  charge  funds  have  been
exchanged.  A  portion of  the  amount redeemed  which  exceeds an  amount which
represents both such increase  in value and the  value of shares purchased  more
than  six  years  prior  to  the  redemption  and/or  shares  purchased  through
reinvestment of  dividends  or  distributions  and/or  shares  acquired  in  the
above-described exchanges will be subject to a CDSC.
    
 
   
    The  amount of the CDSC, if any, will  vary depending on the number of years
from the time  of payment  for the  purchase of Fund  shares until  the time  of
redemption  of such shares. For purposes of determining the number of years from
the time of any payment for the  purchase of shares, all payments made during  a
month  will be aggregated  and deemed to have  been made on the  last day of the
month. The following table sets forth the rates of the CDSC:
    
 
   
<TABLE>
<CAPTION>
                                                                                    CONTINGENT DEFERRED
      YEAR SINCE                                                                      SALES CHARGE AS
       PURCHASE                                                                       A PERCENTAGE OF
     PAYMENT MADE                                                                     AMOUNT REDEEMED
- ----------------------------------------------------------------------------------  --------------------
<S>                                                                                 <C>
First.............................................................................          5.0%
Second............................................................................          4.0%
Third.............................................................................          3.0%
Fourth............................................................................          2.0%
Fifth.............................................................................          2.0%
Sixth.............................................................................          1.0%
Seventh and thereafter............................................................          None
</TABLE>
    
 
   
    In determining the rate of the CDSC, it will be assumed that a redemption is
made of shares held by  the investor for the longest  period of time within  the
applicable  six-year period. This will result in  any such CDSC being imposed at
the  lowest  possible  rate.  Accordingly,  shareholders  may  redeem,   without
incurring  any CDSC,  amounts equal to  any net  increase in the  value of their
shares above the  amount of  their purchase payments  made within  the past  six
years  and amounts equal to the current  value of shares purchased more than six
years prior  to the  redemption  and shares  purchased through  reinvestment  of
dividends  or distributions  or acquired in  exchange for shares  of Dean Witter
front-end sales charge funds, or for shares of other Dean Witter Funds for which
shares of front-end  sales charge funds  have been exchanged.  The CDSC will  be
imposed, in accordance with the table shown above, on any redemptions within six
years of purchase which are in excess of these amounts and which redemptions are
not  (a)  requested  within  one  year  of  death  or  initial  determination of
disability  of  a  shareholder,  or   (b)  made  pursuant  to  certain   taxable
distributions  from retirement plans or retirement accounts, as described in the
Prospectus.
    
 
   
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED.  As discussed in the Prospectus,
payment for shares presented for repurchase or redemption will be made by  check
within  seven days after receipt by the Transfer Agent of the certificate and/or
written request  in good  order. The  term  "good order"  means that  the  share
certificate, if any, and request for redemption are properly signed, accompanied
by  any  documentation  required  by  the  Transfer  Agent,  and  bear signature
guarantees when required by the Fund or the Transfer Agent. Such payment may  be
postponed  or the right of  redemption suspended 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, or (d) during any other period when the  Securities
and  Exchange Commission by order so permits; 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. If the shares to be redeemed have
recently been  purchased  by check  (including  a certified  or  bank  cashier's
check),  payment  of redemption  proceeds 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  investment of  the check  by the Transfer
Agent). Shareholders maintaining  margin accounts with  DWR or another  selected
broker-dealer  are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin accounts.
    
 
                                       20
<PAGE>
    TRANSFERS OF SHARES.  In the event a shareholder requests a transfer of  any
shares  to a  new registration,  such shares  will be  transferred without sales
charge at the time of  transfer. With regard to the  status of shares which  are
either  subject to the contingent  deferred sales charge or  free of such charge
(and with regard to the  length of time shares subject  to the charge have  been
held),  any transfer involving less than all of the shares in an account will be
made on a pro-rata basis (that is, by transferring shares in the same proportion
that the transferred shares bear to the total shares in the account  immediately
prior  to the transfer). The  transferred shares will continue  to be subject to
any applicable  contingent deferred  sales charge  as if  they had  not been  so
transferred.
 
   
    REINSTATEMENT  PRIVILEGE.  As discussed in the Prospectus, a shareholder who
has had  his  or her  shares  redeemed or  repurchased  and has  not  previously
exercised this reinstatement privilege may, within thirty days after the date of
redemption  or repurchase, reinstate any portion or  all of the proceeds of such
redemption or repurchase  in shares  of the  Fund at  the net  asset value  next
determined  after  a  reinstatement  request,  together  with  the  proceeds, is
received by the Transfer Agent.
    
 
    Exercise of the reinstatement privilege  will not affect the federal  income
tax  treatment of any gain  or loss realized upon  the redemption or repurchase,
except that if the redemption or repurchase resulted in a loss and reinstatement
is made in shares of the Fund, some or all of the loss, depending on the  amount
reinstated,  will not be allowed as a  deduction for federal income tax purposes
but will  be applied  to  adjust the  cost basis  of  the shares  acquired  upon
reinstatement.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, the Fund will determine either to distribute
or  to retain all  or part of  any net long-term  capital gains in  any year for
reinvestment. If any such gains are  retained, the Fund will pay federal  income
tax  thereon and  will notify  shareholders that,  following an  election by the
Fund, the shareholders will be required  to include such undistributed gains  in
determining  their taxable income and  may claim their share  of the tax paid by
the Fund as a credit against their individual federal income tax.
    
 
   
    Because the Fund intends to distribute all of its net investment income  and
capital  gains to shareholders and otherwise  continue to qualify as a regulated
investment company under Subchapter  M of the Internal  Revenue Code, it is  not
expected  that  the  Fund  will  be required  to  pay  any  federal  income tax.
Shareholders will normally have to pay federal income taxes, and any  applicable
state and/or local income taxes, on the dividends and distributions they receive
from  the Fund. Such  dividends and distributions,  to the extent  that they are
derived from net investment income or  short-term capital gains, are taxable  to
the  shareholder  as  ordinary  income  regardless  of  whether  the shareholder
receives such payments in additional shares  or in cash. Any dividends  declared
in  the last quarter of any  year which are paid in  the following year prior to
February 1 will be deemed received by the shareholder in the prior year.
    
 
    Gains or losses on sales of securities by the Fund will be long-term capital
gains or losses  if the  securities have  been held by  the Fund  for more  than
twelve  months. Gains or losses on the sale of securities held for twelve months
or less will be short-term gains or losses.
 
   
    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.
    
 
    Net  income,   for  dividend   purposes,  includes   accrued  interest   and
amortization  of original issue discount  and market discounts where applicable,
less the expenses of the Fund.  Net income will be calculated immediately  prior
to the determination of net asset value per share of the Fund.
 
   
    Under  current federal law,  the Fund will receive  net investment income in
the form of interest by virtue of  holding Treasury bills, notes and bonds,  and
will  recognize  income attributable  to it  from  holding zero  coupon Treasury
securities. Current federal tax law requires that a holder (such as the Fund) of
a
    
 
                                       21
<PAGE>
   
zero coupon security accrue a portion of the discount at which the security  was
purchased  as income each year even though the Fund receives no interest payment
in cash on the security during the year. As an investment company, the Fund must
pay out substantially all of its  net investment income each year.  Accordingly,
the  Fund, to the extent  it invests in zero  coupon Treasury securities, may be
required to pay  out as  an income  distribution each  year an  amount which  is
greater  than the total  amount of cash  receipts of interest  the Fund actually
received. Such distributions will be made from the available cash of the Fund or
by liquidation of portfolio securities if  necessary. If a distribution of  cash
necessitates  the liquidation  of portfolio  securities, the  Investment Manager
will select which securities to sell. The  Fund may realize a gain or loss  from
such  sales.  In  the  event  the Fund  realizes  net  capital  gains  from such
transactions, its shareholders may receive  a larger capital gain  distribution,
if any, than they would in the absence of such transactions.
    
 
   
    Any dividend or capital gains distribution received by a shareholder from an
investment  company will have the effect of  reducing the net asset value of the
shareholder's stock  in that  company by  the exact  amount of  the dividend  or
capital   gains  distribution.  Furthermore,  capital  gains  distributions  and
dividends are subject to  federal income taxes.  If the net  asset value of  the
shares  should be reduced below a shareholder's  cost as a result of the payment
of dividends  or the  distribution  of realized  long-term capital  gains,  such
payment  or  distribution  would  be  in  part  a  return  of  the shareholder's
investment to the  extent of such  reduction below the  shareholder's cost,  but
nonetheless  would be  fully taxable at  either ordinary or  capital gain rates.
Therefore, an investor should consider  the tax implications of purchasing  Fund
shares immediately prior to a distribution record date.
    
 
    Shareholders  are urged to consult their attorneys or tax advisers regarding
specific questions as to federal, state or local taxes.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
   
    As discussed in the  Prospectus, from time  to time the  Fund may quote  its
"yield"  and/or its "total return" in advertisements and sales literature. Yield
is calculated for any  30-day period as follows:  the amount of interest  income
for  each  security in  the Fund's  portfolio is  determined in  accordance with
regulatory requirements; the  total for  the entire portfolio,  adjusted by  the
gain  or loss on paydowns during the period, constitutes the Fund's gross income
for the period. Expenses accrued during  the period are subtracted to arrive  at
"net  investment income". The resulting amount is  divided by the product of the
net asset  value per  share on  the last  day of  the period  multiplied by  the
average  number of Fund shares outstanding  during the period that were entitled
to dividends. This amount is added to 1 and raised to the sixth power. 1 is then
subtracted from the result and  the difference is multiplied  by 2 to arrive  at
the  annualized yield. For the 30-day period ended December 31, 1993, the Fund's
yield, calculated pursuant to the formula described above, was 4.98%.
    
 
   
    The Fund's "average annual total return" represents an annualization of  the
Fund's  total return  over a  particular period and  is computed  by finding the
annual percentage rate  which will result  in the ending  redeemable value of  a
hypothetical  $1,000 investment made at the beginning of a one, five or ten year
period, or  for  the  period  from  the  date  of  commencement  of  the  Fund's
operations, if shorter than any of the foregoing. The ending redeemable value is
reduced  by any contingent deferred sales charge at  the end of the one, five or
ten year or other  period. For the  purpose of this  calculation, it is  assumed
that  all dividends and distributions are  reinvested. The formula for computing
the average annual total return involves  a percentage obtained by dividing  the
ending  redeemable value by the amount of  the initial investment, taking a root
of the quotient  (where the root  is equivalent to  the number of  years in  the
period)  and subtracting 1 from the result.  The average annual total returns of
the Fund for the year ended December 31, 1993, for the five years ended December
31, 1993, and for the period June 29, 1984 (commencement of operations)  through
December 31, 1993, were 2.13%, 8.48% and 9.20%, respectively.
    
 
    In  addition to the foregoing, the Fund  may advertise its total return over
different periods of time by means of aggregate, average, year-by-year or  other
types of total return figures. Such calculations may
 
                                       22
<PAGE>
   
or  may not reflect the deduction of the contingent deferred sales charge which,
if reflected,  would reduce  the performance  quoted. For  example, the  average
annual  total return of the Fund may be calculated in the manner described above
but without deduction for any applicable contingent deferred sales charge. Based
on this calculation, the average annual total  returns of the Fund for the  year
ended December 31, 1993, for the five years ended December 31, 1993, and for the
period  from June  29, 1984  through December  31, 1993,  were 7.13%,  8.76% and
9.20%, respectively.
    
 
   
    In addition, the Fund may compute  its aggregate total return for  specified
periods  by determining the  aggregate percentage rate which  will result in the
ending value of a  hypothetical $1,000 investment made  at the beginning of  the
period.  For the purpose of  this calculation, it is  assumed that all dividends
and distributions  are reinvested.  The formula  for computing  aggregate  total
return  involves a percentage obtained by dividing the ending value (without the
reduction for  any  contingent deferred  sales  charge) by  the  initial  $1,000
investment   and  subtracting  1  from  the   result.  Based  on  the  foregoing
calculation, the Fund's total  return for the year  ended December 31, 1993  was
7.13%,  the total return for the five  years ended December 31, 1993 was 52.17%,
and the total return for the period from June 29, 1984 through December 31, 1993
was 130.87%.
    
 
   
    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 1 to the Fund's
aggregate total return to date (expressed  as a decimal and without taking  into
account  the effect of any applicable  CDSC) and multiplying by $10,000, $50,000
or $100,000.  Investments  of $10,000,  $50,000  and  $100,000 in  the  Fund  at
inception  would have grown to $23,087,  $115,435 and $230,870, respectively, at
December 31, 1993.
    
 
SHARES OF THE FUND
- --------------------------------------------------------------------------------
 
   
    The shareholders of the Fund are entitled to a full vote for each full share
held. The  Fund  is  authorized  to  issue an  unlimited  number  of  shares  of
beneficial  interest. The Trustees themselves have the power to alter the number
and the terms of office of the  Trustees (as provided for in the Declaration  of
Trust), and they may at any time lengthen their own terms or make their terms of
unlimited  duration and  appoint their own  successors, provided  that always at
least a majority of  the Trustees has  been elected by  the shareholders of  the
Fund.  Under certain circumstances the Trustees may  be removed by action of the
Trustees. The shareholders also  have the right  under certain circumstances  to
remove  the Trustees. The  voting rights of shareholders  are not cumulative, so
that holders of more than 50 percent  of the shares voting can, if they  choose,
elect  all Trustees  being selected, while  the holders of  the remaining shares
would be unable to elect any Trustees.
    
 
    The Declaration of Trust permits the  Trustees to authorize the creation  of
additional  series  of  shares  (the  proceeds of  which  would  be  invested in
separate, independently  managed portfolios)  and additional  classes of  shares
within  any  series (which  would be  used  to distinguish  among the  rights of
different categories of shareholders, as might be required by future regulations
or other unforeseen  circumstances). However, the  Trustees have not  authorized
any such additional series or classes of shares.
 
    The Declaration of Trust further 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/her or
its  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  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
liability in connection with the affairs of the Fund.
 
    The Fund shall  be of unlimited  duration subject to  the provisions in  the
Declaration of Trust concerning termination by action of the shareholders.
 
                                       23
<PAGE>
CUSTODIAN AND TRANSFER AGENT
- --------------------------------------------------------------------------------
 
    The Bank of New York, 110 Washington Street, New York, New York 10286 is the
Custodian  of  the Fund's  assets.  Any of  the  Fund's cash  balances  with the
Custodian in excess of  $100,000 are unprotected  by federal deposit  insurance.
Such balances may, at times, be substantial.
 
   
    Dean  Witter Trust Company,  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  Company is  an affiliate  of Dean  Witter InterCapital  Inc., the
Fund's Investment  Manager, and  of Dean  Witter Distributors  Inc., the  Fund's
Distributor.  As Transfer Agent and Dividend Disbursing Agent, Dean Witter Trust
Company'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 Company receives a per shareholder account fee from the Fund.
    
 
INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
 
    Price Waterhouse  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
- --------------------------------------------------------------------------------
 
   
    Sheldon  Curtis,  Esq.,  who  is  an  officer  and  General  Counsel  of the
Investment Manager, is an officer and General Counsel of the Fund.
    
 
EXPERTS
- --------------------------------------------------------------------------------
 
   
    The annual financial statements of the Fund for the year ended December  31,
1993,  which  are  included  in this  Statement  of  Additional  Information and
incorporated  by  reference  in  the  Prospectus,  have  been  so  included  and
incorporated  in  reliance  on  the  report  of  Price  Waterhouse,  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.
 
                                       24
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
REPORT OF INDEPENDENT ACCOUNTANTS
    
- --------------------------------------------------------------------------------
 
   
To the Shareholders and Trustees of Dean Witter U.S. Government Securities 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  present fairly,  in all
material respects,  the  financial  position  of  Dean  Witter  U.S.  Government
Securities  Trust  (the  "Fund")  at  December  31,  1993,  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 nine  years in  the period  then  ended and  for the  period June  29,  1984
(commencement  of  operations) through  December  31, 1984,  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 owned at December 31, 1993  by
correspondence  with the custodian  and brokers, provide  a reasonable basis for
the opinion expressed above.
    
 
   
PRICE WATERHOUSE
New York, New York
January 31, 1994
    
 
                                       25
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1993
    
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                  PRINCIPAL AMOUNT  COUPON        MATURITY
                   (IN THOUSANDS)    RATE          DATES              VALUE
                  ----------------  ------  --------------------  --------------
<S>               <C>               <C>     <C>                   <C>
U.S. GOVERNMENT OBLIGATIONS (43.9%)
U.S. TREASURY STRIPS (7.7%)
                  $        75,000     0.00%       2/15/96         $   68,474,235
                           40,000     0.00        8/15/98             31,531,972
                          123,000     0.00        2/15/04             66,480,873
                          380,000     0.00        5/15/04            201,504,272
                          385,000     0.00        8/15/04            200,412,135
                           95,000     0.00        11/15/04            48,550,881
                          459,000     0.00        2/15/05            229,712,976
                           96,000     0.00        5/15/05             47,204,870
                           93,000     0.00        2/15/06             43,275,299
                                                                  --------------
                                                                     937,147,513
                                                                  --------------
U.S. TREASURY NOTES (36.0%)
                           64,500     4.375       11/15/96            64,237,969
                           68,000     4.750       9/30/98             66,873,750
                           50,000     4.750       10/31/98            49,101,563
                           99,500     5.125       11/30/98            99,142,422
                          104,000     5.875       5/15/95            106,583,750
                           60,000     6.875       3/31/97             63,946,875
                          249,000     6.875       4/30/97            265,418,438
                          307,500     7.000       4/15/99            331,571,484
                          250,000     8.000       7/15/94            255,976,563
                            9,000     8.000       10/15/96             9,805,781
                          200,000     8.250       11/15/94           207,718,750
                          390,000     8.500       3/31/94            394,814,062
                          400,000     8.500       6/30/94            409,937,500
                          195,000     8.500       9/30/94            202,007,813
                          258,500     8.500       11/15/95           278,331,797
                          352,500     8.625       8/15/94            363,515,625
                          184,000     8.625       10/15/95           198,030,000
                          373,500     8.875       2/15/94            375,892,734
                          229,000     8.875       7/15/95            245,387,812
                          193,500     8.875       2/15/96            211,187,109
                           47,000     9.250       1/15/96             51,523,750
                          150,000     9.500       5/15/94            153,375,000
                                                                  --------------
                                                                   4,404,380,547
                                                                  --------------
U.S. TREASURY BILLS (A) (0.2%)
                           11,000     2.720       1/20/94             10,984,209
                           16,000     2.810       1/20/94             15,976,271
                                                                  --------------
                                                                      26,960,480
                                                                  --------------
TOTAL U.S. GOVERNMENT OBLIGATIONS
(IDENTIFIED COST $5,206,866,902)...................................5,368,488,540
                                                                  --------------
U.S. GOVERNMENT AGENCIES (56.6%)
RESOLUTION FUNDING CORP.
ZERO COUPON STRIPS (5.5%)
                           19,000     0.00        1/15/02             11,922,878
                           21,150     0.00        4/15/02             13,061,838
</TABLE>
    
 
                                       26
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1993 (CONTINUED)
    
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                  PRINCIPAL AMOUNT  COUPON        MATURITY
                   (IN THOUSANDS)    RATE          DATES              VALUE
                  ----------------  ------  --------------------  --------------
<S>               <C>               <C>     <C>                   <C>
                  $        61,500     0.00%       7/15/02         $   37,242,290
                           57,049     0.00        10/15/02            33,960,939
                           71,000     0.00        1/15/03             41,277,341
                          109,000     0.00        4/15/03             62,266,152
                           71,000     0.00        7/15/03             39,798,851
                          136,100     0.00        10/15/03            75,152,555
                          149,882     0.00        1/15/04             80,794,312
                          104,419     0.00        4/15/04             55,325,300
                           85,000     0.00        7/15/04             44,114,303
                           71,340     0.00        10/15/04            36,344,413
                          118,211     0.00        1/15/05             59,027,445
                           75,237     0.00        4/15/05             36,947,582
                           98,000     0.00        7/15/05             47,208,580
                                                                  --------------
                                                                     674,444,779
                                                                  --------------
MORTGAGE PASS-THROUGH CERTIFICATES (51.1%)
GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION (50.8%)
                          343,881     6.500 10/15/22 - 12/15/23      340,656,874
                           50,000     6.500          *                49,531,250
                           50,000     6.500          *                49,390,625
                        1,115,491     7.000  4/15/17 - 12/15/23    1,133,269,171
                           50,000     7.000          *                50,312,500
                        1,666,757     7.500  9/15/16 - 5/15/23     1,728,738,993
                          547,303     8.000  10/15/16 - 2/15/23      576,207,864
                          560,646     8.500  7/15/06 - 8/15/22       594,634,649
                          581,784     9.000  10/15/08 - 8/15/21      622,326,669
                          463,127     9.500 10/15/09 - 12/15/20      500,755,863
                          520,485    10.000 11/15/09 - 11/15/20      573,672,327
                            1,683    12.500  4/15/10 - 6/15/15         1,952,454
                                                                  --------------
                                                                   6,221,449,239
                                                                  --------------
GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION GRADUATED PAYMENT
MORTGAGE I (0.3%)
                           27,796    12.250  6/15/13 - 10/15/15       32,156,998
                                                                  --------------
</TABLE>
    
 
   
<TABLE>
<S>                                   <C>         <C>
TOTAL U.S. GOVERNMENT AGENCIES
(IDENTIFIED COST $6,516,554,118)....                 6,928,051,016
                                                  ----------------
TOTAL INVESTMENTS (IDENTIFIED COST
  $11,723,421,020)(B)...............      100.5%    12,296,539,556
LIABILITIES IN EXCESS OF CASH AND
  OTHER ASSETS......................       (0.5)       (61,511,083)
                                      ----------  ----------------
NET ASSETS..........................      100.0%  $ 12,235,028,473
                                      ----------  ----------------
                                      ----------  ----------------
<FN>
- ------------------------
 *  SECURITIES  PURCHASED ON A FORWARD  COMMITMENT WITH AN APPROXIMATE PRINCIPAL
    AMOUNT AND  NO  DEFINITE MATURITY  DATE,  THE ACTUAL  PRINCIPAL  AMOUNT  AND
    MATURITY DATE WILL BE DETERMINED UPON SETTLEMENT.
(A) U.S.  TREASURY  BILLS WERE  PURCHASED ON  A DISCOUNT  BASIS. THE  RATE SHOWN
    REFLECTS A BOND EQUIVALENT INTEREST RATE.
(B) THE AGGREGATE  COST  OF  INVESTMENTS  FOR FEDERAL  INCOME  TAX  PURPOSES  IS
    $11,723,421,020; THE AGGREGATE GROSS UNREALIZED APPRECIATION IS $635,337,206
    AND THE AGGREGATE GROSS UNREALIZED DEPRECIATION IS $62,218,670, RESULTING IN
    NET UNREALIZED APPRECIATION OF $573,118,536.
</TABLE>
    
 
   
                       See Notes to Financial Statements
    
 
                                       27
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
FINANCIAL STATEMENTS
    
- -------------------------------------------------------------------------------
 
   
STATEMENT OF ASSETS AND LIABILITIES
FOR THE YEAR ENDED DECEMBER 31, 1993
    
- -------------------------------------------------------------------------------
   
<TABLE>
<CAPTION>
ASSETS:
<S>                                      <C>
Investments in securities, at value
  (identified cost $11,723,421,020)
  (Note 1).............................  $12,296,539,556
Cash...................................        3,536,145
Receivables for:
  Interest.............................      125,312,304
  Investments sold.....................       50,608,681
  Shares of beneficial interest sold...       16,725,115
Prepaid expenses.......................          334,046
                                         ---------------
      Total Assets.....................   12,493,055,847
                                         ---------------
LIABILITIES:
Payables for:
  Investments purchased................      203,023,317
  Dividends to shareholders............       35,457,348
  Shares of beneficial interest
   repurchased.........................        6,826,518
Investment management fee payable (Note
  2)...................................        4,014,420
Plan of distribution fee payable (Note
  3)...................................        7,625,416
Accrued expenses (Note 4)..............        1,080,355
                                         ---------------
      Total Liabilities................      258,027,374
                                         ---------------
NET ASSETS:
Paid in capital........................   13,464,798,009
Accumulated realized loss on
  investments--net.....................   (1,802,920,648)
Unrealized appreciation of
  investments--net.....................      573,118,536
Accumulated undistributed investment
  income--net..........................           32,576
                                         ---------------
      Net Assets.......................  $12,235,028,473
                                         ---------------
                                         ---------------
NET ASSET VALUE PER SHARE,
  1,313,949,069 shares outstanding
  (unlimited shares authorized of $.01
  par value)...........................            $9.31
                                         ---------------
                                         ---------------
</TABLE>
    

STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 1993
- ------------------------------------------------------------------------------ 
   
<TABLE>
<S>                                       <C>
INVESTMENT INCOME:
  Interest Income.......................  $1,002,781,220
                                          --------------
  Expenses
   Plan of distribution fee (Note 3)....      91,852,480
    Investment management fee (Note 2)..      48,270,568
    Transfer agent fees and expenses
     (Note 4)...........................       6,540,758
    Custodian fees......................       1,115,053
    Registration fees...................         344,693
    Shareholder reports and notices.....         279,188
    Professional fees...................         125,964
    Trustees' fees and expenses (Note
     4).................................          35,798
    Other...............................         143,137
                                          --------------
      Total Expenses....................     148,707,639
                                          --------------
        Investment Income--Net..........     854,073,581
                                          --------------
REALIZED AND UNREALIZED GAIN (LOSS)
  ON INVESTMENTS--NET (NOTE 1):
  Realized loss on investments--net.....    (261,427,859)
  Change in unrealized appreciation on
   investments--net.....................     284,089,311
                                          --------------
         Net Gain on Investments........      22,661,452
                                          --------------
          Net Increase in Net Assets
           Resulting from Operations....  $  876,735,033
                                          --------------
                                          --------------
</TABLE>
    
 
   
STATEMENT OF CHANGES IN NET ASSETS
    
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                           FOR THE              FOR THE
                                                                         YEAR ENDED           YEAR ENDED
                                                                      DECEMBER 31, 1993    DECEMBER 31, 1992
                                                                     -------------------  -------------------
<S>                                                                  <C>                  <C>
INCREASE (DECREASE) IN NET ASSETS:
  Operations:
    Investment income--net.........................................   $     854,073,581    $     965,771,516
    Realized loss on investments--net..............................        (261,427,859)        (170,417,125)
    Change in unrealized appreciation on investments--net..........         284,089,311         (106,562,822)
                                                                     -------------------  -------------------
      Net increase in net assets resulting from operations.........         876,735,033          688,791,569
  Dividends to shareholders from investment income--net............        (854,048,343)        (965,759,453)
  Transactions in shares of beneficial interest-net (decrease)
   increase (Note 6)...............................................        (271,700,686)       1,025,260,754
                                                                     -------------------  -------------------
        Total (decrease) increase..................................        (249,013,996)         748,292,870
NET ASSETS:
  Beginning of period..............................................      12,484,042,469       11,735,749,599
                                                                     -------------------  -------------------
  End of period (including undistributed net investment income of
   $32,576 and $12,063, respectively)..............................   $  12,235,028,473    $  12,484,042,469
                                                                     -------------------  -------------------
                                                                     -------------------  -------------------
</TABLE>
    
 
   
                       SEE NOTES TO FINANCIAL STATEMENTS
    
 
                                       28
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
NOTES TO FINANCIAL STATEMENTS
    
- --------------------------------------------------------------------------------
 
   
1.__ORGANIZATION AND ACCOUNTING POLICIES--Dean Witter U.S. Government Securities
Trust  (the  "Fund") was  organized  on September  29,  1983 as  a Massachusetts
business trust and is  registered under the Investment  Company Act of 1940,  as
amended  (the "Act"), as a  diversified, open-end management investment company.
The Fund commenced operations on June 29, 1984.
    
 
   
    The following is a summary of significant accounting policies:
    
   
    A.__VALUATION  OF  INVESTMENTS--(1)  all  portfolio  securities  for   which
    over-the-counter  market quotations are readily  available are valued at the
    bid price; (2) when market  quotations are not readily available,  portfolio
    securities  are valued at their fair value as determined in good faith under
    procedures established by and under the general supervision of the  Trustees
    (valuation  of  securities  for  which  market  quotations  are  not readily
    available may be based  upon current market prices  of securities which  are
    comparable in coupon, rating and maturity or an appropriate matrix utilizing
    similar  factors); and (3) short-term instruments  having a maturity date of
    more than 60 days are valued on a "mark-to-market" basis, that is, at prices
    based on market quotations  for securities of  similar type, yield,  quality
    and  maturity, until 60  days prior to maturity  and thereafter at amortized
    value. Short-term instruments having a maturity  date of 60 days or less  at
    the  time  of purchase  are  valued at  amortized  cost unless  the Trustees
    determine this does not represent fair market value.
    
   
    B.__ACCOUNTING FOR INVESTMENTS--Security transactions  are accounted for  on
    the trade date (date the order to buy or sell is executed). In computing net
    investment  income, the Fund does not  amortize premiums or accrue discounts
    on fixed income  securities in  the portfolio, except  those original  issue
    discounts  for  which  amortization  is  required  for  federal  income  tax
    purposes. Additionally, with respect  to market discount,  a portion of  any
    capital  gain  realized upon  disposition  is recharacterized  as investment
    income. Realized gains and losses on security transactions are determined on
    the identified cost method. 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 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  its shareholders  on the  record date.  The amount of
    dividends and  distributions from  net investment  income and  net  realized
    capital   gains  are  determined  in  accordance  with  federal  income  tax
    regulations, which may differ from generally accepted accounting principles.
    These "book/tax" differences are either considered temporary or permanent in
    nature. To  the  extent these  differences  are permanent  in  nature,  such
    amounts  are reclassified within the capital accounts based on their federal
    tax-basis treatment; temporary differences do not require reclassifications.
    Dividends and  distributions  which exceed  net  investment income  and  net
    realized  capital gains  for financial  reporting purposes  but not  for tax
    purposes are reported  as dividends in  excess of net  investment income  or
    distributions  in excess of  net realized capital gains.  To the extent they
    exceed net  investment  income  and  net  realized  capital  gains  for  tax
    purposes, they are reported as distributions of paid-in-capital.
    
 
   
2.__INVESTMENT   MANAGEMENT  AGREEMENT--Pursuant  to  an  Investment  Management
Agreement (the "Agreement") with Dean Witter InterCapital Inc. (the  "Investment
Manager"), the Fund pays its Investment Manager a management fee, calculated and
accrued daily and payable monthly, by applying the following annual rates to the
Fund's  daily net  assets: 0.50%  of the  portion of  such daily  net assets not
exceeding $1 billion; 0.475% of the  portion of such daily net assets  exceeding
$1 billion
    
 
                                       29
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
    
- --------------------------------------------------------------------------------
   
but  not exceeding $1.5 billion;  0.45% of the portion  of such daily net assets
exceeding $1.5 billion but  not exceeding $2 billion;  0.425% of the portion  of
such daily net assets exceeding $2 billion but not exceeding $2.5 billion; 0.40%
of the portion of such daily net assets exceeding $2.5 billion but not exceeding
$5  billion; 0.375% of the portion of such daily net assets exceeding $5 billion
but not exceeding $7.5 billion;  0.35% of the portion  of such daily net  assets
exceeding  $7.5 billion but not exceeding $10  billion; 0.325% of the portion of
such daily net assets exceeding $10 billion but not exceeding $12.5 billion  and
0.30% of the portion of such daily net assets exceeding $12.5 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  office  space  and  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--Shares  of  beneficial  interest  of  the  Fund  are
distributed  by Dean Witter Distributors  Inc. (the "Distributor"), an affiliate
of the Investment Manager. To compensate the Distributor, the Fund has adopted a
Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act  pursuant
to  which the Fund  pays the Distributor compensation  accrued daily and payable
monthly at the annual rate of 0.75%  (0.65% on amounts over $10 billion) of  the
lesser  of: (a)  the average  daily aggregate gross  sales of  the Fund's shares
since the inception  of the Fund  (not including reinvestments  of dividends  or
capital  gains distributions), less the average  daily aggregate net asset value
of the Fund's shares redeemed since the Fund's inception upon which a contingent
deferred sales  charge has  been imposed  or  upon which  such charge  has  been
waived,  or (b) the Fund's average daily net assets. Amounts paid under the Plan
are paid to the Distributor  to compensate it for  the services it provides  and
the  expenses it bears in  the distribution of the  Fund's shares, including the
payment of commissions for sales of the Fund's shares and incentive compensation
to and  expenses of  the account  executives of  Dean Witter  Reynolds Inc.,  an
affiliate of the Investment Manager, and other employees or selected dealers who
engage  in  or  support  distribution  of  the  Fund's  shares  or  who  service
shareholder accounts, including  overhead and telephone  expenses, printing  and
distribution of prospectuses and reports used in connection with the offering of
the  Fund's shares to other than current shareholders, preparation, printing and
distribution of sales literature and  advertising materials and its  opportunity
costs  in advancing such amounts,  which compensation would be  in the form of a
carrying charge on any unrecovered expenses incurred by the Distributor.
    
 
   
    Provided that the Plan continues in effect, any cumulative expenses incurred
by the  Distributor, but  not yet  recovered, may  be recovered  through  future
distribution  fees from the Fund and  contingent deferred sales charges from the
Fund's shareholders.
    
 
   
    For the year ended December 31, 1993, the Distributor has informed the  Fund
that  it received approximately $12,629,000 in contingent deferred sales charges
from certain redemptions of the Fund's shares of beneficial interest. The Fund's
shareholders pay such charges which are not expenses of the Fund.
    
   
4.__SECURITY  TRANSACTIONS  AND  TRANSACTIONS   WITH  AFFILIATES--The  cost   of
purchases  and the proceeds from  sales/prepayments of portfolio securities, for
the year ended December 31,  1993, excluding short-term investments,  aggregated
$3,633,364,757 and $6,080,408,869, respectively.
    
   
    On  April 1, 1991  the Fund established  an unfunded noncontributory defined
benefit pension plan covering all independent Trustees of the Fund who will have
served as independent Trustees for at
    
 
                                       30
<PAGE>
   
DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
    
- --------------------------------------------------------------------------------
   
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, 1993,  included  in
Trustees'  fees and expenses in the Statement of Operations amounted to $12,228.
At December 31, 1993 the Fund had an accrued pension liability of $39,296  which
is included in accrued expenses in the Statement of Assets and Liabilities.
    
 
   
    Dean  Witter  Trust  Company, an  affiliate  of the  Investment  Manager and
Distributor, is the Fund's  transfer agent. During the  year ended December  31,
1993, the Fund incurred transfer agent fees and expenses of $6,540,758, of which
$682,569 was payable at December 31, 1993.
    
   
5.__FEDERAL  INCOME TAX STATUS--At  December 31, 1993, the  Fund had net capital
loss carryovers of  approximately $1,761,704,000 of  which $196,403,000 will  be
available  through  December 31,  1994, $228,402,000  will be  available through
December 31, 1995,  $277,199,000 will  be available through  December 31,  1996,
$270,987,000  will be available through December  31, 1997, $108,731,000 will be
available through  December 31,  1998, $261,526,000  will be  available  through
December  31, 1999, $154,964,000 will be available through December 31, 2000 and
$263,492,000 will  be  available through  December  31, 2001  to  offset  future
capital  gains to the extent  provided by regulations. To  the extent that these
capital loss carryovers are used to offset future capital gains, it is  probable
that  the  gains so  offset will  not  be distributed  to shareholders.  Any net
capital loss  incurred  after  October 31  ("post-October  losses")  within  the
taxable  year is  deemed to arise  on the first  day of the  Fund's next taxable
year. The Fund incurred and elected to defer a net capital loss of approximately
$41,217,000 during fiscal 1993.
    
 
   
    The Fund  had  temporary  book/tax  differences  primarily  attributable  to
post-October losses and permanent book/tax differences primarily attributable to
expired  capital  loss  carryovers. To  reflect  reclassifications  arising from
permanent book/tax differences for the year ended December 31, 1993, accumulated
net realized loss on  investments was credited  and paid-in-capital was  charged
for approximately $41,479,000.
    
 
   
6.__SHARES OF BENEFICIAL INTEREST--Transactions in shares of beneficial interest
were as follows:
    
 
   
<TABLE>
<CAPTION>
                                          FOR THE YEAR ENDED               FOR THE YEAR ENDED
                                          DECEMBER 31, 1993                 DECEMBER 31, 1992
                                    ------------------------------   -------------------------------
                                       SHARES           AMOUNT          SHARES           AMOUNT
                                    -------------   --------------   -------------   ---------------
<S>                                 <C>             <C>              <C>             <C>
Sold.............................     168,705,889   $1,589,631,602     264,623,715   $ 2,474,281,926
Reinvestment of dividends........      47,121,366      443,588,963      53,289,700       497,306,605
                                    -------------   --------------   -------------   ---------------
                                      215,827,255    2,033,220,565     317,913,415     2,971,588,531
Repurchased......................    (244,727,357)  (2,304,921,251)   (208,391,811)   (1,946,327,777)
                                    -------------   --------------   -------------   ---------------
Net (decrease) increase..........     (28,900,102)  $ (271,700,686)    109,521,604   $ 1,025,260,754
                                    -------------   --------------   -------------   ---------------
                                    -------------   --------------   -------------   ---------------
</TABLE>
    
 
                                       31
<PAGE>
   
Dean Witter U.S. Government Securities Trust
    
   
Financial Highlights
    
- --------------------------------------------------------------------------------
 
   
Selected data and ratios for a share of beneficial interest outstanding
throughout each period:
    
   
<TABLE>
<CAPTION>
                                                                FOR THE YEAR ENDED DECEMBER 31,
                              ---------------------------------------------------------------------------------------------------
                                1993        1992        1991        1990        1989         1988          1987          1986
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
<S>                           <C>         <C>         <C>         <C>         <C>         <C>           <C>           <C>
Per Share Operating
 Performance:
  Net asset value, beginning
   of period................  $    9.30   $    9.52   $    9.37   $    9.51   $    9.42   $      9.75   $     10.33   $     10.53
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
    Investment income--net..        .64         .74         .87         .90         .91           .97           .96          1.02
    Realized and unrealized
     gain (loss) on
     investments--net.......        .01        (.22)        .15        (.14)        .09          (.33)         (.58)         (.20)
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Total from investment
   operations...............        .65         .52        1.02         .76        1.00           .64           .38           .82
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Less dividends and
   distributions:
    Dividends from net
     investment income......       (.64)       (.74)       (.87)       (.90)       (.91)         (.97)         (.96)        (1.02)
    Distributions from net
     realized gains on
     investments............        -0-         -0-         -0-         -0-         -0-           -0-           -0-           -0-
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Total dividends and
   distributions............       (.64)       (.74)       (.87)       (.90)       (.91)         (.97)         (.96)        (1.02)
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
  Net asset value, end of
   period...................  $    9.31   $    9.30   $    9.52   $    9.37   $    9.51   $      9.42   $      9.75   $     10.33
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
                              ---------   ---------   ---------   ---------   ---------   -----------   -----------   -----------
Total Investment Return+....       7.13%       5.76%      11.43%       8.49%      11.10%         6.74%         3.92%         8.23%
Ratios/Supplemental Data:
  Net assets, end of period
   (in millions)............    $12,235     $12,484     $11,736      $9,829     $10,167       $10,366       $10,418       $11,100
  Ratio of expenses to
   average net assets.......       1.18%       1.20%       1.17%       1.23%       1.19%         1.21%         1.18%         1.20%
  Ratio of net investment
   income to average net
   assets...................       6.78%       7.91%       9.23%       9.60%       9.62%        10.01%         9.63%         9.72%
  Portfolio turnover rate...         32%         40%        104%         54%         44%           15%           51%           93%
 
<CAPTION>
                                              FOR THE
                                              PERIOD
                                             JUNE 29,
                                               1984*
                                              THROUGH
                                             DECEMBER
                                 1985        31, 1984
                              -----------   -----------
<S>                           <C>           <C>
Per Share Operating
 Performance:
  Net asset value, beginning
   of period................  $     10.47   $     10.00
                              -----------   -----------
    Investment income--net..         1.24           .59
    Realized and unrealized
     gain (loss) on
     investments--net.......          .13           .47
                              -----------   -----------
  Total from investment
   operations...............         1.37          1.06
                              -----------   -----------
  Less dividends and
   distributions:
    Dividends from net
     investment income......        (1.24)         (.59)
    Distributions from net
     realized gains on
     investments............         (.07)          -0-
                              -----------   -----------
  Total dividends and
   distributions............        (1.31)         (.59)
                              -----------   -----------
  Net asset value, end of
   period...................  $     10.53   $     10.47
                              -----------   -----------
                              -----------   -----------
Total Investment Return+....        14.00%        10.85%(1)
Ratios/Supplemental Data:
  Net assets, end of period
   (in millions)............       $7,511          $968
  Ratio of expenses to
   average net assets.......         1.30%         1.43%(2)
  Ratio of net investment
   income to average net
   assets...................        11.53%        11.79%(2)
  Portfolio turnover rate...           98%          N/A(3)
<FN>
- ---------------
        *  COMMENCEMENT OF OPERATIONS.
        +  DOES NOT REFLECT THE DEDUCTION OF SALES LOAD.
      (1)  NOT ANNUALIZED.
      (2)  ANNUALIZED.
      (3)  PORTFOLIO TURNOVER RATES WERE NOT REQUIRED ON U.S. GOVERNMENT SECURITIES PRIOR TO 1985.
</TABLE>
    
 
   
                       SEE NOTES TO FINANCIAL STATEMENTS
    
 
                                       32
<PAGE>

                  DEAN WITTER U.S. GOVERNMENT SECURITIES 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 from the period June 29, 1984
           through December 31, 1984 and the years ended December
           31, 1985, 1986, 1987, 1988, 1989, 1990, 1991,
           1992 and 1993..................................................4


      (2)  Financial statements included in the Statement of
           Additional Information (Part B):                           Page in
                                                                        SAI
                                                                        ---
            Portfolio of Investments at December 31, 1993.................26

            Statement of assets and liabilities at
            December 31, 1993.............................................28

            Statement of operations for the year
            ended December 31, 1993.......................................28

            Statement of changes in net assets for the years
            ended December 31, 1992 and 1993..............................28

            Notes to Financial Statements.................................29


      (3)  Financial statements included in Part C:

           None

     (b)   EXHIBITS:

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

             6.(a) -  Form of Distribution Agreement between
                      Registrant and Dean Witter Distributors Inc.

               (b) -  Form of Selected Dealers Agreement



                                        1

<PAGE>
             8.    -  Form of Amended and Restated Transfer Agency and
                      Service Agreement

             9.    -  Form of Services Agreement between Dean Witter
                      InterCapital Inc. and Dean Witter Services
                      Company Inc.

            11.    -  Consent of Independent Accountants

            15.    -  Amended and Restated Plan of Distribution

                      Pursuant to Rule 12b-1

            16.    -  Schedules for Computation of Performance
                      Quotations

           All other exhibits previously filed and incorporated
           by reference.

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

           None

Item 26.   NUMBER OF HOLDERS OF SECURITIES.


<TABLE>
<CAPTION>


      (1)                                       (2)
                                     Number of Record Holders
     Title of Class                     at January 25, 1994
     --------------                  ------------------------
<S>                                 <C>

Shares of Beneficial Interest                482,927
</TABLE>

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



                                        2

<PAGE>

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 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.



                                        3

<PAGE>

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.  Information regarding the other officers of
InterCapital is included in Item 29(b) below.  The term "Dean Witter Funds" used
below refers to the following Funds: (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, (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,
and (22) InterCapital California Municipal Securities, registered closed-end
investment companies, and (1) Dean Witter Equity Income Trust, (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 Managed Assets Trust, (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
Premier Income Trust, (32) Dean Witter Short-Term U.S. Treasury Trust, (33) Dean
Witter Diversified Income Trust, (34) Dean Witter U.S. Government Money Market
Trust, (35) Dean Witter Global Dividend Growth Securities, (36) Active Assets
California Tax-Free Trust, (37) Dean Witter Natural Resource Development
Securities Inc., (38) Active Assets Government Securities Trust, (39) Active
Assets



                                        4

<PAGE>

Money Trust, (40) Active Assets Tax-Free Trust, (41) Dean Witter Limited Term
Municipal Trust, (42) Dean Witter Variable Investment Series, (43) Dean Witter
Value-Added Market Series and (44) Dean Witter Short-Term Bond Fund, registered
open-end investment companies.  InterCapital is a wholly-owned subsidiary of
Dean Witter, Discover & Co.  The principal address of the Dean Witter Funds is
Two World Trade Center, New York, New York 10048.  The term "TCW/DW Funds"
refers to the following Funds: (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, registered open-end investment companies and (7) TCW/DW Term
Trust 2000, (8) TCW/DW Term Trust 2002 and (9) TCW/DW Term Trust 2003,
registered closed-end investment companies.


                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

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




                                        5

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

Philip J.           Director               Chairman, Chief
  Purcell                                  Executive Officer and
                                           Director of DWDC and
                                           DWR; Director of
                                           DWSC and Distributors.


Richard M.          Director               President and Chief
  DeMartini                                Operating Officer of
                                           Dean Witter Capital
                                           and Director of DWDC,
                                           DWR, DWSC and
                                           Distributors.

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

Thomas C.           Executive Vice         Executive Vice
  Schneider         President, Chief       President, Chief
                    Financial Officer      Financial Officer
                    and Director           and Director of
                                           DWDC, DWR, DWSC
                                           and Distributors.


Christine A.        Director               Executive Vice
  Edwards                                  President, Secretary,
                                           General Counsel and
                                           Director of DWDC, DWR,
                                           DWSC and Distributors.

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



                                        6

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

David A. Hughey     Executive Vice         Vice President of the
                    President and          Dean Witter Funds and
                    Chief Administrative   the TCW/DW Funds;
                    Officer                Executive Vice
                                           President, Chief
                                           Administrative Officer
                                           and Director of DWTC;
                                           Executive Vice
                                           President and Chief
                                           Administrative Officer
                                           of DWSC and
                                           Distributors.

Edmund C.           Executive Vice         Vice President of the
  Puckhaber         President              Dean Witter Funds.

John Van Heuvelen   Executive Vice         President and Chief
                    President              Executive Officer of
                                           DWTC.

Sheldon Curtis      Senior Vice            Vice President,
                    President,             Secretary and
                    General Counsel        General Counsel of the
                    and Secretary          Dean Witter Funds and
                                           the TCW/DW Funds;
                                           Senior Vice President
                                           and Secretary of
                                           DWTC; Assistant
                                           Secretary of DWR and
                                           DWDC; Senior Vice
                                           President, General
                                           Counsel and Secretary
                                           of DWSC; Senior Vice
                                           President, Assistant
                                           General Counsel and
                                           Assistant Secretary of
                                           Distributors.

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

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

Thomas H. Connelly  Senior Vice           Vice President of
                    President             various Dean Witter
                                          Funds.



                                        7

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

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

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

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

John B. Kemp, III   Senior Vice            Director of the
                    President              Provident Savings
                                           Bank, Jersey City,
                                           New Jersey.

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

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

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

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

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

Elizabeth A.        Senior Vice
   Vetell           President

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

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



                                        8

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

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


Barry Fink          First Vice             Assistant Secretary
                    President              of the Dean Witter
                                           Funds and TCW/DW
                                           Funds; First Vice
                                           President and
                                           Assistant Secretary of
                                           DWSC.


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

Robert Zimmerman    First Vice
                    President

Joseph Arcieri      Vice President

Douglas Brown       Vice President

Rosalie Clough      Vice President

B. Catherine        Vice President
  Connelly

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

Salvatore DeSteno   Vice President         Vice President of
                                           DWSC.



                                        9

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

Dwight Doolan       Vice President

Bruce Dunn          Vice President

Geoffrey D. Flynn   Vice President         Vice President of
                                           DWSC.

Bette Freedman      Vice President

Deborah Genovese    Vice President

Peter W. Gurman     Vice President

Shant Harootunian   Vice President

John Hechtlinger    Vice President

David Johnson       Vice President

Christopher Jones   Vice President

Stanley Kapica      Vice President

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

Lawrence S. Lafer   Vice President         Assistant Secretary
                    and Assistant          of the Dean Witter
                    Secretary              Funds and the TCW/DW
                                           Funds; Vice President
                                           and Assistant
                                           Secretary of DWSC.

Thomas Lawlor       Vice President


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

James Mulcahy       Vice President

James Nash          Vice President

Hugh Rose           Vice President



                                       10

<PAGE>

                                          Other Substantial
                                          Business, Profession,
                     Position with        Vocation or Employment,
                      Dean Witter         including Name, Prin-
                     InterCapital         cipal Address and
    Name                 Inc.             Nature of Connection
    ----          -------------------     -------------------------

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

Howard A. Schloss   Vice President

Rose Simpson        Vice President

Diane Lisa Sobin    Vice President         Vice President of
                                           various Dean Witter
                                           Funds.

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

Vinh Q. Tran        Vice President         Vice President of
                                           various Dean Witter
                                           Funds.

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

Marianne Zalys      Vice President


  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 Natural Resource Development Securities Inc.
   (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 Equity Income Trust
  (15)  Dean Witter Federal Securities Trust
  (16)  Dean Witter U.S. Government Securities Trust




                                       11

<PAGE>

  (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 Managed Assets Trust
  (22)  Dean Witter Limited Term Municipal Trust
  (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.
  (33)  Dean Witter Multi-State Municipal Series Trust
  (34)  Dean Witter Premier Income 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 Variable Investment Series
  (43)  Dean Witter Value-Added Market Series
  (44)  Dean Witter Short-Term Bond 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

(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.

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

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

Michael T. Gregg                    Vice President and Assistant
                                    Secretary.

Edward C. Oelsner III               Vice President of Distributors.

Samuel Wolcott III                  Vice President of Distributors.



                                       12

<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.



                                       13


<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 16th day of February, 1994.

                               DEAN WITTER U.S GOVERNMENT SECURITIES TRUST


                                       By     /s/  Sheldon Curtis
                                          ----------------------------------
                                                   Sheldon Curtis
                                           Vice President and Secretary

     Pursuant to the requirements of the Securities Act of 1933, this Post-
Effective Amendment No. 11 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                              02/16/94
    ---------------------------
        Charles A. Fiumefreddo

(2) Principal Financial Officer    Treasurer and Principal
                                   Accounting Officer

By  /s/ Thomas F. Caloia                                    02/16/94
    ---------------------------
        Thomas F. Caloia

(3) Majority of the Trustees

    Charles A. Fiumefreddo (Chairman)
    Edward R. Telling


By  /s/ Sheldon Curtis                                      02/16/94
    ---------------------------
        Sheldon Curtis
        Attorney-in-Fact

    Jack F. Bennett            Paul Kolton
    John R. Haire              Michael E. Nugent
    John E. Jeuck              Albert T. Sommers
    Manuel H. Johnson          Edwin J. Garn

By  /s/ David M. Butowsky                                   02/16/94
    ---------------------------
        David M. Butowsky
        Attorney-in-Fact



<PAGE>

                DEAN WITTER U.S GOVERNMENT SECURITIES TRUST

                               EXHIBIT INDEX



Exhibit No.              Description



5.    -   Investment Management Agreement between
          Registrant and Dean Witter InterCapital Inc.

6.(a) -   Distribution Agreement between Registrant and
          Dean Witter Distributors Inc.

  (b) -   Form of Selected Dealers Agreement

8.    -   Amended and Restated Transfer Agency and Service
          Agreement

9.    -   Form of Services Agreement between Dean Witter
          InterCapital Inc. and Dean Witter Services
          Company Inc.

11.   -   Consent of Independent Accountants

15.   -   Amended and Restated Plan of Distribution Pursuant to
          Rule 12b-1

16.   -   Schedules for Computation of Performance
          Quotations





<PAGE>
                        INVESTMENT MANAGEMENT AGREEMENT
 
     AGREEMENT  made as of the 30th day of June, 1993 by and between Dean Witter
U.S. Government  Securities 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 and commodities markets  and securities and  commodities 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  and commodities  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
agencies). 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, facilities
and equipment and such clerical help and bookkeeping services as the Fund  shall
reasonably require in the conduct of its

<PAGE>
business.  The Investment Manager shall also bear the cost of telephone service,
heat, light, power and other utilities provided to the Fund.
 
     5. The Fund assumes and shall pay or cause to be paid all other expenses of
the Fund, including  without limitation:  fees pursuant to  any plan  of
distribution that the Fund may adopt; the charges and expenses of any registrar,
any  custodian or depository  appointed by the  Fund for the  safekeeping of its
cash, portfolio  securities or  commodities 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  transactions to which the
Fund is a  party; all taxes,  including securities or  commodities 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
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 and statements of  additional information 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;  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 any outside
service used for  pricing of the  Fund's shares; charges  and expenses of  legal
counsel,  including counsel to the  Trustees of the Fund  who are not interested
persons (as defined in the  Act) of the Fund or  the Investment Manager, and  of
independent  accountants, in  connection with any  matter relating  to the Fund;
membership dues of industry associations;  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 daily net assets up to  $1
billion;  0.475% of  the next  $500 million;  0.450% of  the next  $500 million;
0.425% of the next $500 million; 0.40%  of the next $2.5 billion; 0.375% of  the
next  $2.5 billion;  0.350% of the  next $2.5  billion; 0.325% of  the next $2.5
billion; and 0.30% of daily net assets over $12.5 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 computations  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 limitation that may be applicable; provided, however, there shall be
excluded from  such  expenses  the  amount of  any  interest,  taxes,  brokerage
commissions,  distribution fees  and extraordinary  expenses (including  but not
limited  to  legal  claims  and   liabilities  and  litigation  costs  and   any
indemnification related thereto) paid or payable by the Fund. Such reduction, if
any,   shall   be  computed   and  accrued   daily,  shall   be  settled   on  a

                                       2

<PAGE>

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  securities in the Fund's portfolio accrued
to and including the last day of the Fund's fiscal year, and dividends  declared
on 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 sale 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 Trustee,
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, 1994 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  Investment
Company  Act  of  1940,  as  amended  (the  "Act"),  of  the  outstanding voting
securities of the Fund or by the  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 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  (to
the  extent required by the Act and  the rules thereunder) unless such automatic
terminations 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 the 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  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.
 
    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,   Dean   Witter   Reynolds   Inc.,  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  U.S. Government
Securities Trust, dated September  29, 1983, 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 U.S.  Government  Securities  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  U.S.
Government  Securities 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 U.S.
Government Securities 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.
 
<TABLE>
<S>                                                        <C>
                                                           DEAN WITTER U.S. GOVERNMENT
                                                           SECURITIES TRUST
                                                           By
                                                           .........................................................
Attest:
 ........................................................
                                                           DEAN WITTER INTERCAPITAL INC.
                                                           By
                                                           .........................................................
Attest:
 ........................................................
</TABLE>
 
                                       4

<PAGE>

                  DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST

                             DISTRIBUTION AGREEMENT


     AGREEMENT made as of this 30th day of June, 1993, between Dean Witter U.S.
Government Securities Trust, an unincorporated business trust organized under
the laws of the Commonwealth of Massachusetts (the "Trust"), and Dean Witter
Distributors Inc., a Delaware corporation (the "Distributor");
 
                              W I T N E S S E T H:

     WHEREAS, the Trust is registered under the Investment Company Act of 1940,
as amended (the "1940 Act"), as a diversified open-end investment company and it
is in the interest of the Trust to offer its shares for sale continuously; and
 
     WHEREAS, the Trust and the Distributor wish to enter into an agreement with
each other with respect to the continuous offering of the Trust's transferable
shares of beneficial interest, of $.01 par value ("Shares"), in order to promote
the growth of the Trust and facilitate the distribution of its shares.
 
     NOW, THEREFORE, the parties agree as follows:
 
     SECTION 1.  APPOINTMENT OF THE DISTRIBUTOR.  (a) The Trust hereby appoints
the Distributor as the principal underwriter of the Trust to sell Shares to the
public on the terms set forth in this Agreement and the Trust's Prospectus and
the Distributor hereby accepts such appointment and agrees to act hereunder. The
Trust, 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 Trust 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 Trust's prospectus
(the "Prospectus") and statement of additional information included in the
Trust'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 Trust, except that the
exclusive rights granted to the Distributor to sell the Shares shall not apply
to Shares issued by the Trust: (i) in connection with the merger or
consolidation of any other investment company or personal holding company with
the Trust or the acquisition by purchase or otherwise of all (or substantially
all) the assets or the outstanding shares of any such company by the Trust; 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 TRUST.  (a) The Distributor shall
have the right to buy from the Trust 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 Trust shall be the net asset value, determined as set forth
in the Prospectus.
 
     (b) The Shares are to be resold by the Distributor at the net asset value
per share, as set forth in the Prospectus, to investors or to securities
dealers, including DWR, who have entered into selected dealer agreements with
the Distributor pursuant to Section 7 ("Selected Dealers").
 
     (c) The Trust 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(d) hereof. The Trust shall also have the right 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 Trust, makes it impracticable to sell the Shares.



                                        1

<PAGE>

     (d) The Trust, or any agent of the Trust designated in writing by the
Trust, shall be promptly advised of all purchase orders for Shares received by
the Distributor. Any order may be rejected by the Trust; provided, however, that
the Trust 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 Trust (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 Trust in New
York Clearing House funds. The Distributor agrees to cause such payment and such
instructions to be delivered promptly to the Trust (or its agent).
 
     With respect to Shares sold by any Selected Dealer, the Distributor is
authorized to direct the Trust'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 Trust'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 Trust 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 less any
applicable contingent deferred sales charge. All payments by the Trust hereunder
shall be made in the manner set forth below.
 
     The proceeds of any redemption of Shares shall be paid by the Trust as
follows: (i) any applicable contingent deferred sales charge shall be paid to
the Distributor or to the Selected Dealer, or, when applicable, pursuant to the
Rules of Fair Practice of the National Association of Securities Dealers, Inc.
("NASD"), retained by the Fund and (ii) the balance shall be paid to the
redeeming shareholders, in each case in accordance with applicable provisions of
the Prospectus, in New York Clearing House funds. The Distributor is authorized
to direct the Trust to pay directly to any Selected Dealer any contingent
deferred sales charges payable by the Trust to the Distributor in respect of
Shares sold by the Selected Dealer to the redeeming shareholders. 

     (b) The Distributor is authorized, as agent for the Trust, 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
Trust for redemption all Shares so delivered. The Distributor shall be
responsible for the accuracy of instructions transmitted to the Trust's transfer
agent in connection with all such repurchases.
 
     (c) The Distributor is authorized, as agent for the Trust, to repurchase
Shares held in a share holder's account with the Trust 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 Trust, for redemption, all such
orders for repurchase of shares. Payment for shares repurchased may be made by
the Trust to the Distributor for the account of the shareholder. The Distributor
shall be responsible for the accuracy of instructions transmitted to the Trust's
transfer agent in connection with all such repurchases.
 
     With respect to Shares tendered for redemption or repuchase by any Selected
Dealer on behalf of its customers, the Distributor is authorized to instruct the
transfer agent of the Trust to accept orders for redemption or repurchase
directly from the Selected Dealer on behalf of the Distributor and to instruct
the Trust 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 maintain
a record of such orders. The Distributor is further authorized to obtain from
the Trust; and shall maintain, a record of payments made directly to the
Selected Dealer on behalf of the Distributor.



                                        2

<PAGE>

     (d) Redemption of Shares or payment by the Trust 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 Trust
of securities owned by it is not reasonably practicable or it is not reasonably
practicable for the Trust fairly to determine the value of its net assets, or
during any other period when the Securities and Exchange Commission, by order,
so permits.
 
     SECTION 5.  DUTIES OF THE TRUST.  (a) The Trust 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 Trust and examined by
independent accountants. The Trust 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 Trust shall take, from time to time, but subject to the necessary
approval of its share holders, all necessary action to fix the number of its
authorized Shares and 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 Trust shall use its best efforts to qualify and maintain the
qualification of an appropriate number of the Shares for sale under the
securities laws of such states as the Distributor and the Trust may approve. Any
such qualification may be withheld, terminated or withdrawn by the Trust at any
time in its discretion. As provided in Section 8(c) hereof, the expense of
qualification and maintenance of qualification shall be borne by the Trust. The
Distributor shall furnish such information and other material relating to its
affairs and activities as may be required by the Trust in connection with such
qualification.

     (d) The Trust shall, at the expense of the Distributor, furnish, in
reasonable quantities upon request by the Distributor, copies of annual and
interim reports by the Trust.
 
     SECTION 6.  DUTIES OF THE DISTRIBUTOR.  (a) The Distributor shall sell
Shares of the Trust through DWR, and may sell Shares through other securities
dealers and its own Account Executives, if any, and shall devote reasonable time
and effort to promote sales of the 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. It is also understood
that Selected Dealers, including DWR, may also sell shares for other registered
investment companies.
 
     (b) The Distributor and any Selected Dealers shall not 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 Trust.
 
     (c) The Distributor agrees that it will comply with the terms and
limitations of the Rules of Fair Practice of the 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 Trust. 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
Trust, 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.



                                        3

<PAGE>

     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 sales commissions
service fees, and other expenses for sales of the Trust's shares (except such
expenses as are specifically undertaken herein by the Trust) incurred or paid by
Selected Dealers, including DWR. It is understood and agreed that, so long as
the Trust's Plan of Distribution pursuant to Rule 12b-1 under the 1940 Act
continues in effect, any expenses incurred by the Distributor hereunder and by
DWR under the Distribution Agreement previously in effect between DWR and the
Trust may be paid from amounts the Distributor and DWR are entitled to receive
from the Trust under such Plan. It is further understood and agreed that
expenses for which the Distributor and DWR or any other Selected Dealer may be
paid under said Plan include opportunity costs, which may be calculated as a
carrying charge on the excess of distribution expenses, incurred by the
Distributor and/or the Selected Dealer over distribution revenues received by
each of them, respectively, under this Agreement and the Distribution Agreement
previously in effect with DWR.
 
     (b) The Trust shall bear all costs and expenses of the Trust, including
payment of contingent deferred sales charges, fees and disbursements of legal
counsel including counsel to the Trustees of the Trust who are not interested
persons (as defined in the 1940 Act) of the Trust 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 expense of preparing, printing, mailing and
otherwise distributing prospectuses and statements of additional information,
annual or interim reports or proxy materials to shareholders.
 
     (c) The Trust shall bear the cost and expenses of qualification of the
Shares for sale, and, if necessary or advisable in connection therewith, of
qualifying the Trust as a broker or dealer, in such states of the United States
or other jurisdictions as shall be selected by the Trust and the Distributor
pursuant to Section 5(c) hereof and the cost and expenses payable to each such
state for continuing qualification therein until the Trust decides to
discontinue such qualification pursuant to Section 5(c) hereof.
 
     SECTION 9.  INDEMNIFICATION.  (a) The Trust 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 and Statements of Additional
Information, as from time to time amended and supplemented, or the annual or
interim reports to shareholders of the Trust, 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 Trust in connection therewith by or on behalf of
the Distributor; provided, however, that in no case (i) is the indemnity of the
Trust 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 Trust 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 Trust 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 any such
controlling persons, as the case may be, shall have notified the Trust 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 Trust 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 Trust 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 Trust elects to assume the defense, such
defense shall be conducted by counsel chosen by it and satisfactory to 



                                        4

<PAGE>

the Distributor or such controlling person or persons, defendant or defendants
in the suit. In the event the Trust 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 Trust 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 Trust
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 Trust and
each of its trustees and officers and each person, if any, who controls the
Trust 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 Trust in writing by or on behalf of the
Distributor for use in connection with the Registration Statement or related
Prospectus and Statement of Additional Information, as from time to time
amended, or the annual or interim reports to shareholders.

     (ii) The Distributor shall indemnify and hold harmless the Trust and the
Trust's transfer agent, individually and in its capacity as the Trust'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 Trust
pursuant to subsection 4(c) hereof and pay the proceeds to, or as directed by,
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 subsection 3(d).

     (iii) In case any action shall be brought against the Trust 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 Trust, and the Trust and each person so indemnified shall have the
rights and duties given to the Distributor by the provisions of subsection (a)
of this Section 8.

     (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 indemnifiying 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 Trust 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 Trust 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 Trust 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
Trust 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 Trust or the Distributor and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission. The Trust 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 



                                        5

<PAGE>

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, 1994, and thereafter, but only so long as such continuance
is specifically approved at least annually by (i) the Board of Trustees of the
Trust, or by the vote of a majority of the outstanding voting securities of the
Trust, 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 Trust'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 Trus tees of the Trust, by a majority of the Trustees of the
Trust who are not interested persons of the Trust and who have no direct or
indirect financial interest in this Agreement, or by vote of a majority of the
outstanding voting securities of the Trust, 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 Trust, or by the vote of a majority of outstanding voting
securities of the Trust, and (ii) a majority of those Trustees of the Trust 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 Trust's Plan of Distribution pursuant to Rule 12b-1
under the 1940 Act, 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 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 U.S. Government Securities Trust, dated September 29, 1983, 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 U.S. Government Securities 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 U.S. Government Securities 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 U.S. Government Securities 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 written in New York, New York.

                                             DEAN WITTER U.S. GOVERNMENT
                                             SECURITIES TRUST


                                             By: .....................
                                             DEAN WITTER DISTRIBUTORS INC.

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



                                        6

<PAGE>

                         DEAN WITTER DISTRIBUTORS INC.

Gentlemen:

     Dean  Witter  Distributors  Inc.  (the  "Distributor")  has  a distribution
agreement (the  "Distribution  Agreement")  with  Dean  Witter  U.S.  Government
Securities Trust, a Massachusetts business trust (the "Fund"), pursuant to which
it  acts as  the Distributor  for the  sale of  the Fund's  shares of beneficial
interest, par  value $0.01  per  share (the  "Shares"). Under  the  Distribution
Agreement, the Distributor has the right to distribute Shares for resale.

     The  Fund is an open-end management investment company registered under the
Investment Company Act of 1940, as amended, and the Shares being offered to  the
public  are registered under  the Securities Act  of 1933, as  amended. You have
received a  copy of  the Distribution  Agreement  between us  and the  Fund  and
reference  is made herein to certain  provisions of such Distribution Agreement.
The terms used  herein, including "Prospectus"  and "Registration Statement"  of
the  Fund and "Selected Dealer" shall have the same meaning in this Agreement as
in the Distribution  Agreement. As principal,  we offer to  sell shares to  your
customers, upon the following terms and conditions:

     1.  In all sales  of Shares to the  public you shall act  on behalf of your
customers, and in no transaction  shall you have any  authority to act as  agent
for the Fund, for us or for any Selected Dealer.

     2.  Orders received from you  will be accepted through  us or on our behalf
only at  the net  asset value  applicable to  each order,  as set  forth in  the
current  Prospectus. The procedure  relating to the handling  of orders shall be
subject to instructions which we or the Fund shall forward from time to time  to
you. All orders are subject to acceptance or rejection by the Distributor or the
Fund in the sole discretion of either.

     3.  You  shall not  place orders  for  any Shares  unless you  have already
received purchase orders for such Shares at the applicable net asset values  and
subject  to  the  terms  hereof  and  of  the  Distribution  Agreement  and  the
Prospectus. You agree that you will not  offer or sell any of the Shares  except
under  circumstances that will result in  compliance with the applicable Federal
and state securities laws and that in  connection with sales and offers to  sell
Shares  you will furnish to each person to whom any such sale or offer is made a
copy of the Prospectus (as then amended or supplemented) and will not furnish to
any person any information relating to the Shares, which is inconsistent in  any
respect  with the  information contained in  the Prospectus (as  then amended or
supplemented) or cause any advertisement to be published by radio or  television
or  in any newspaper or posted in any  public place or use any sales promotional
material without our consent and the consent of the Fund.

     4. The Distributor will compensate you for sales of shares of the Fund  and
personal services to Fund shareholders by paying you a sales charge and/or other
commission  (which may be in  the form of a gross  sales credit and/or an annual
residual commission) and/or a service fee, under  the terms as are set forth  in
the Fund's Prospectus.

     5.  If any Shares sold to your  customers under the terms of this Agreement
are repurchased by us for the account of the Fund or are tendered for redemption
within seven business days  after the date of  the confirmation of the  original
purchase  by you, it is agreed that you  shall forfeit your right to, and refund
to us, any commission received by you with respect to such Shares.

     6. No  person is  authorized  to make  any representations  concerning  the
Shares  or the Fund except those contained in the current Prospectus and in such
printed information  subsequently  issued  by  us or  the  Fund  as  information
supplemental to such Prospectus. In selling Shares, you shall rely solely on the
representations   contained  in  the  Prospectus  and  supplemental  information
mentioned above. Any  printed information which  we furnish you  other than  the
Prospectus  and the Fund's periodic reports  and proxy solicitation material are
our sole responsibility and  not the responsibility of  the Fund, and you  agree
that the Fund shall have no liability or responsibility to you in these respects
unless expressly assumed in connection therewith.

                                       1
<PAGE>

     7.  You agree to deliver to each  of the purchasers making purchases a copy
of the then current Prospectus at or prior to the time of offering or sale,  and
you  agree thereafter  to deliver  to such purchasers  copies of  the annual and
interim reports and proxy solicitation materials of the Fund. You further  agree
to  endeavor to  obtain proxies from  such purchasers. Additional  copies of the
Prospectus, annual or interim  reports and proxy  solicitation materials of  the
Fund will be supplied to you in reasonable quantities upon request.

     8.  You are hereby authorized (i) to place orders directly with the Fund or
its agent for  shares of the  Fund to be  sold by us  subject to the  applicable
terms  and conditions governing the placement of orders for the purchase of Fund
shares, as set forth  in the Distribution Agreement,  and (ii) to tender  shares
directly to the Fund or its agent for redemption subject to the applicable terms
and conditions set forth in the Distribution Agreement.

     9. We reserve the right in our discretion, without notice, to suspend sales
or  withdraw the offering of Shares entirely. Each party hereto has the right to
cancel this agreement upon notice to the other party.

     10. I. You  shall indemnify  and hold  harmless the  Distributor, from  and
against  any claims, damages and  liabilities which arise as  a result of action
taken pursuant  to instructions  from you,  or on  your behalf  to: a)(i)  place
orders  for Shares  of the  Fund with  the Fund's  transfer agent  or direct the
transfer agent to receive instructions for the order of Shares, and (ii)  accept
monies  or direct that the transfer agent accept monies as payment for the order
of such Shares, all as contemplated by  and in accordance with Section 3 of  the
Distribution  Agreement; b)(i) place orders for  the redemption of Shares of the
Fund with the  Fund's transfer  agent or direct  the transfer  agent to  receive
instruction  for the redemption of Shares and (ii) to pay redemption proceeds or
to direct that  the transfer agent  pay redemption proceeds  in connection  with
orders  for the redemption of  Shares, all as contemplated  by and in accordance
with Section 4  of the  Distribution Agreement;  provided, however,  that in  no
case, (i) is this indemnity 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 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 the Distribution
Agreement;  or (ii) are you to be liable under the indemnity agreement contained
in this paragraph with respect to any claim made against the Distributor or  any
such  controlling  persons,  unless  the  Distributor  or  any  such controlling
persons, as  the case  may  be, shall  have notified  you  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 you of  any such claim shall not relieve you  from
any  liability which  you may  have to  the person  against whom  such action is
brought otherwise than on account of  the indemnity agreement contained in  this
paragraph.  You  will be  entitled to  participate  at your  own expense  in the
defense, or, if  you so elect,  to assume the  defense, of any  suit brought  to
enforce any such liability, but if you elect to assume the defense, such defense
shall  be conducted by counsel chosen by you and satisfactory to the Distributor
or such controlling person or persons,  defendant or defendants in the suit.  In
the  event you  elect 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 you do not elect to assume the defense of
any such suit, you 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.  You  shall  promptly  notify  the
Distributor  of the commencement of any  litigation or proceedings against it or
any of its officers or directors in connection with the issuance or sale of  the
Shares.

     II.  If the indemnification provided for  in this Section 10 is unavailable
or insufficient to hold harmless the  Distributor, as provided above in  respect
of  any losses, claims, damages, liabilities  or expenses (or actions in respect
thereof) referred to  herein, then you  shall contribute to  the amount paid  or
payable  by  the  Distributor  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 you on the one hand and
the

                                       2
<PAGE>

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 you 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 your relative fault on the one hand and the relative
fault of 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. You  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 the  Distributor
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  the  Distributor  in  connection with
investigating or defending  any such  claim. Notwithstanding  the provisions  of
this  subsection (II),  you 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 Securities Act  of
1933  Act) shall be entitled to contribution  from any person who was not guilty
of such fraudulent misrepresentation.

     11. We  shall have  full  authority to  take such  action  as we  may  deem
advisable  in  respect  of  all  matters  pertaining  to  the  distribution  and
redemption of Fund shares. We shall be under no liability to you except for lack
of good  faith and  for  obligations expressly  assumed  by us  herein.  Nothing
contained  in this paragraph  is intended to  operate as, and  the provisions of
this paragraph shall not in  any way whatsoever constitute,  a waiver by you  of
compliance  with any provision of the Securities  Act of 1933, as amended, or of
the rules  and regulations  of  the Securities  and Exchange  Commission  issued
thereunder.

     12.  You represent  that you  are a member  of the  National Association of
Securities Dealers, Inc. and, with respect to any sales in the United States, we
both hereby agree to abide by the Rules of Fair Practice of such Association.

     13. Upon application to us, we will inform you as to the states in which we
believe the Shares have been  qualified for sale under,  or are exempt from  the
requirements of, the respective securities laws of such states, but we assume no
responsibility   or  obligation  as  to  your   right  to  sell  Shares  in  any
jurisdiction.

     14. All communications to us should be sent to the address shown below. Any
notice to you shall be duly given if mailed or telegraphed to you at the address
specified by you below.

                                       3
<PAGE>

     15. This Agreement shall become effective as of the date of your acceptance
hereof, provided that you return to us promptly a signed and dated copy.

                                          DEAN WITTER DISTRIBUTORS INC.

                                          By 
                                             -----------------------------------
                                                    (Authorized Signature)

Please return one signed copy
     of this agreement to:

Dean Witter Distributors Inc.
Two World Trade Center
New York, New York 10048

Accepted:

Firm Name:
           ---------------------------

By:
    ----------------------------------

Address:
         -----------------------------

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

Date:
      --------------------------------

                                       4

<PAGE>




                           AMENDED AND RESTATED
                   TRANSFER AGENCY AND SERVICE AGREEMENT

                                   with

                         DEAN WITTER TRUST COMPANY



<PAGE>


                             TABLE OF CONTENTS


                                                                   Page
                                                                   ----

     Article 1      Terms of Appointment; Duties of DWTC . . . . .   2

     Article 2      Fees and Expenses. . . . . . . . . . . . . . .   6

     Article 3      Representations and Warranties of DWTC . . . .   7

     Article 4      Representations and Warranties of the
                    Fund . . . . . . . . . . . . . . . . . . . . .   8

     Article 5      Duty of Care and Indemnification . . . . . . . . 9

     Article 6      Documents and Covenants of the Fund and
                    DWTC . . . . . . . . . . . . . . . . . . . . .  12

     Article 7      Duration and Termination of Agreement. . . . .  16

     Article 8      Assignment . . . . . . . . . . . . . . . . . .  16

     Article 9      Affiliations . . . . . . . . . . . . . . . . .  17

     Article 10     Amendment. . . . . . . . . . . . . . . . . . .  18

     Article 11     Applicable Law . . . . . . . . . . . . . . . .  18

     Article 12     Miscellaneous. . . . . . . . . . . . . . . . .  18

     Article 13     Merger of Agreement. . . . . . . . . . . . . .  20

     Article 14     Personal Liability . . . . . . . . . . . . . .  21



                                       -i-

<PAGE>

AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT


          AMENDED AND RESTATED AGREEMENT made as of the 1st day of August, 1993
by and between each of the Dean Witter 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 COMPANY, a
trust company organized under the laws of New Jersey, having its principal
office and place of business at Harborside Financial Center, Plaza Two, Jersey
City, New Jersey 07311 ("DWTC").

          WHEREAS, the Fund desires to appoint DWTC as its transfer agent,
dividend disbursing agent and shareholder servicing agent and DWTC desires to
accept such appointment;

          NOW THEREFORE, in consideration of the mutual covenants herein
contained, the parties hereto agree as follows:



                                       -1-

<PAGE>

Article 1      TERMS OF APPOINTMENT; DUTIES OF DWTC

               1.1  Subject to the terms and conditions set forth in this
Agreement, the Fund hereby employs and appoints DWTC to act as, and DWTC 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  DWTC agrees that it will perform the following services:

               (a)  In accordance with procedures established from time to time
by agreement between the Fund and DWTC, DWTC 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");



                                       -2-

<PAGE>

               (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 appropriateinstructions;

               (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




                                       -3-

<PAGE>

               (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.  DWTC
shall also provide to the Fund on a regular basis the total number of Shares
which 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 would result in an overissue, DWTC shall refuse to issue
such Shares and shall not countersign and issue any certificates requested for
such Shares.  When recording the issuance of Shares, DWTC 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), DWTC shall: (i) perform all of the customary services
of a transfer agent, dividend disbursing agent and, as relevant, shareholder
ser- vicing 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,



                                       -4-

<PAGE>

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 confirm-
able 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 which 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 DWTC in writing
those transactions and assets to be treated as exempt from Blue Sky reporting
for each State and (ii) verify the establishment of transactions for each State
on the system prior to activation and thereafter monitor the daily activity for
each State.  The responsibility of DWTC for the Fund's registration status under
the Blue Sky or securities laws of any State or other jurisdiction is solely
limited to the initial establishment of transactions subject to Blue Sky
compliance by the Fund and the reporting of such transactions



                                       -5-

<PAGE>

to the Fund as provided above and as agreed from time to time by the Fund and
DWTC.

               (d)  DWTC shall provide such additional services and functions
not specifically described herein as may be mutually agreed between DWTC and the
Fund. Procedures applicable to such services may be established from time to
time by agreement between the Fund and DWTC.

Article 2      FEES AND EXPENSES

               2.1  For performance by DWTC pursuant to this Agreement, each
Fund agrees to pay DWTC 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 DWTC.

               2.2  In addition to the fees paid under Section 2.1 above, the
Fund agrees to reimburse DWTC in connection with the services rendered by DWTC
hereunder. In addition, any other expenses incurred by DWTC 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



                                       -6-

<PAGE>

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 DWTC by the Fund upon request prior to the mailing date of
such materials.

Article 3      REPRESENTATIONS AND WARRANTIES OF DWTC

               DWTC represents and warrants to the Fund that:

               3.1  It is a trust company duly organized and existing and in
good standing under the laws of New Jersey and it is duly qualified to carry on
its business 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.




                                       -7-

<PAGE>

Article 4      REPRESENTATIONS AND WARRANTIES OF THE FUND

               The Fund represents and warrants to DWTC 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.



                                       -8-

<PAGE>

Article 5      DUTY OF CARE AND INDEMNIFICATION

               5.1  DWTC shall not be responsible for, and the Fund shall
indemnify and hold DWTC 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 DWTC 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 DWTC or its agents or
subcontractors of information, records and documents which (i) are received by
DWTC 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 DWTC or its agents
or subcontractors of, any instructions or requests



                                       -9-

<PAGE>

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 such Shares be registered 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  DWTC 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 DWTC as a result of the lack of good faith, negligence or
willful misconduct of DWTC, its officers, employees or agents.

               5.3  At any time, DWTC 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 DWTC under
this Agreement, and DWTC 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.  DWTC, its



                                      -10-

<PAGE>

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 DWTC 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.  DWTC, 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.



                                       -11

<PAGE>

               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 DWTC

               6.1  The Fund shall promptly furnish to DWTC the following:

               (a)  If a corporation:

               (i)  A certified copy of the resolution of the Board of Directors
of the Fund authorizing the appointment of DWTC and the execution and delivery
of this Agreement;



                                      -12-

<PAGE>

               (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;

               (b)  If a business trust:

               (i)  A certified copy of the resolution of the Board of Trustees
of the Fund authorizing the appointment of DWTC 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;



                                      -13-

<PAGE>

               (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 DWTC deems
to be appropriate or necessary for the proper performance of its duties.

               6.2  DWTC 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  DWTC 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



                                      -14-

<PAGE>

Section 31 of the 1940 Act, and the rules and regulations thereunder, DWTC
agrees that all such records prepared or maintained by DWTC relating to the
services performed by DWTC 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  DWTC 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 DWTC and the Fund.

               6.5  In case of any request or demands for the inspection of the
Shareholder records of the Fund, DWTC will endeavor to notify the Fund and to
secure instructions from an authorized officer of the Fund as to such
inspection.  DWTC 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.



                                       -15

<PAGE>

Article 7      DURATION AND TERMINATION OF AGREEMENT

               7.1  This Agreement shall remain in full force and effect until
July 31, 1996 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 DWTC 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, DWTC 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.

               8.2  This Agreement shall inure to the benefit of and be binding
upon the parties and their respective permitted successors and assigns.



                                      -16-

<PAGE>

               8.3  DWTC 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 DWTC; provided, however, that
such person or entity has and maintains the qualifications, if any, required to
perform such obligations and duties, and that DWTC 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  DWTC 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 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



                                      -17-

<PAGE>

Fund's investment adviser and/or distributor, are or may be interested in DWTC
as directors, officers, employees, agents and shareholders or otherwise, and
that the directors, officers, employees, agents and shareholders of DWTC 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 DWTC to act as transfer agent,
dividend disbursing agent and/or shareholder servicing agent,



                                      -18-

<PAGE>

and DWTC desires to render such services, such services shall be provided
pursuant to a letter agreement, substantially in the form of Exhibit A hereto,
between DWTC 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 DWTC 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 DWTC and the Fund issued by a
surety company satisfactory to DWTC, except that DWTC may accept an affidavit of
loss and indemnity agreement executed by the registered holder (or legal
representative) without surety in such form as DWTC deems appropriate
indemnifying DWTC and the Fund for the issuance of a replacement certificate, in
cases where the alleged loss is in the amount of $1000 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, DWTC 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 DWTC



                                      -19-

<PAGE>

may, in its sole discretion, deem appropriate or as the Fund and, if applicable,
the Distributor may instruct DWTC.

               12.4  Any notice or other instrument authorized or required by
this Agreement to be given in writing to the Fund or to DWTC 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 DWTC:

Dean Witter Trust Company
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.



                                      -20-

<PAGE>

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.



                                      -21-

<PAGE>

          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.



 (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 Natural Resource Development Securities Inc.
 (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 Equity Income Trust
(15) Dean Witter Federal Securities Trust
(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 Managed Assets Trust
(22) Dean Witter Limited Term Municipal Trust
(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.
(33) Dean Witter Multi-State Municipal Series Trust
(34) Dean Witter Premier Income 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



                                      -22-

<PAGE>

(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 Select Municipal Reinvestment Fund
(44) Dean Witter Variable Investment Series


                         By:/s/ Sheldon Curtis
                            ------------------------------------
                                Sheldon Curtis
                              Vice President and General Counsel


ATTEST:



/s/ Barry Fink
- ---------------------------
    Barry Fink
Assistant Secretary

                         DEAN WITTER TRUST COMPANY


                         By:/s/ Charles A. Fiumefreddo
                            ------------------------------------
                                Charles A. Fiumefreddo
                                Chairman

ATTEST:



/s/ David A. Hughey
- ---------------------------
    David A. Hughey
Executive Vice President




                                    -23-
<PAGE>


Dean Witter Trust Company
Harborside Financial Center
Plaza Two
Jersey City, NJ 07311


Gentlemen:

          The undersigned, (THE FUND NAME) a (Massachusetts business
trust/Maryland corporation) (the "Fund"), desires to employ and appoint Dean
Witter Trust Company ("DWTC") 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 DWTC of fees as set out in the fee schedule attached hereto as Schedule
A, DWTC 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.



                                      -24-

<PAGE>


          Please indicate DWTC'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 THE FUND)





                              By:__________________________________
                                              Sheldon Curtis
                                 Vice President and General Counsel

ACCEPTED AND AGREED TO:


DEAN WITTER TRUST COMPANY


By:_______________________
Its:______________________
Date:_____________________



                                      -25-

<PAGE>

                              SCHEDULE A


Fund:     Dean Witter U.S. Government Securities Trust

Fees:     (1)  Annual maintenance fee of $11.50 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.



                                       -26





<PAGE>

                               SERVICES AGREEMENT

     AGREEMENT made as of the 31st day of December, 1993 by and between Dean
Witter InterCapital Inc., a Delaware corporation (herein referred to as
"InterCapital"), and Dean Witter Services Company Inc., a New Jersey corporation
(herein referred to as "DWS").

     WHEREAS, InterCapital has entered into separate agreements (each such
agreement being herein referred to as an "Investment Management Agreement") with
certain investment companies as set forth on Schedule A (each such investment
company being herein referred to as a "Fund" and, collectively, as the "Funds")
pursuant to which InterCapital is to perform, or supervise the performance of,
among other services, administrative services for the Funds (and, in the case of
Funds with multiple portfolios, the Series or Portfolios of the Funds (such
Series and Portfolio being herein individually referred to as "a Series" and,
collectively, as "the Series"));

     WHEREAS, InterCapital desires to retain DWS to perform the administrative
services as described below; and

     WHEREAS, DWS desires to be retained by InterCapital to perform such
administrative services:

     Now, therefore, in consideration of the mutual covenants and agreements of
the parties hereto as herein set forth, the parties covenant and agree as
follows:

     1. DWS agrees to provide administrative services to each Fund as
hereinafter set forth. Without limiting the generality of the foregoing, DWS
shall (i) administer the Fund's business affairs and supervise the overall
day-to-day operations of the Fund (other than rendering investment advice); (ii)
provide the Fund with full administrative services, including the maintenance of
certain books and records, such as journals, ledger accounts and other records
required under the Investment Company Act of 1940, as amended (the"Act"), the
notification to the Fund and InterCapital of available funds for investment, the
reconciliation of account information and balances among the Fund's custodian,
transfer agent and dividend disbursing agent and InterCapital, and the
calculation of the net asset value of the Fund's shares; (iii) provide the Fund
with the services of persons competent to perform such supervisory,
administrative and clerical functions as are necessary to provide effective
operation of the Fund; (iv) oversee the performance of administrative and
professional services rendered to the Fund by others, including its custodian,
transfer agent and dividend disbursing agent, as well as accounting, auditing
and other services; (v) provide the Fund with adequate general office space and
facilities; (vi) assist in the preparation and the printing of the periodic
updating of the Fund's registration statement and prospectus (and, in the case
of an open-end Fund, the statement of additional information), tax returns,
proxy statements, and reports to its shareholders and the Securities and
Exchange Commission; and (vii) monitor the compliance of the Fund's investment
policies and restrictions.

     In the event that InterCapital enters into an Investment Management
Agreement with another investment company, and wishes to retain DWS to perform
administrative services hereunder, it shall notify DWS in writing. If DWS is
willing to render such services, it shall notify InterCapital in writing,
whereupon such other Fund shall become a Fund as defined herein.

     2. DWS 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 DWS shall be deemed to include officers of DWS and persons employed
or otherwise retained by DWS (including officers and employees of InterCapital,
with the consent of InterCapital) to furnish services, statistical and other
factual data, information with respect to technical and scientific developments,
and such other information, advice and assistance as DWS may desire. DWS shall
maintain each Fund's records and books of account (other than those maintained
by the Fund's transfer agent, registrar, custodian and other agencies). All such
books and records so maintained shall be the property of the Fund and, upon
request therefor, DWS shall surrender to InterCapital or to the Fund such of the
books and records so requested.

     3. InterCapital will, from time to time, furnish or otherwise make
available to DWS such financial reports, proxy statements and other information
relating to the business and affairs of the Fund as DWS may


                                        1


<PAGE>

reasonably require in order to discharge its duties and obligations to the Fund
under this Agreement or to comply with any applicable law and regulation or
request of the Board of Directors/Trustees of the Fund.

     4. For the services to be rendered, the facilities furnished, and the
expenses assumed by DWS, InterCapital shall pay to DWS monthly compensation
calculated daily (in the case of an open-end Fund) or weekly (in the case of
a closed-end Fund) by applying the annual rate or rates set forth on Schedule B
to the net assets of each Fund. Except as hereinafter set forth, (i) in the
case of an open-end Fund, compensation under this Agreement shall be calculated
by applying 1/365th of the annual rate or rates to the Fund's or the Series'
daily net assets determined as of the close of business on that day or the last
previous business day and (ii) in the case of a closed-end Fund, compensation
under this Agreement shall be calculated by applying the annual rate or rates
to the Fund's average weekly net assets determined as of the close of the last
business day of each week. 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
on Schedule B. Subject to the provisions of paragraph 5 hereof, payment of DWS'
compensation for the preceding month shall be made as promptly as possible
after completion of the computations contemplated by paragraph 5 hereof.
 
     5. In the event the operating expenses of any open-end Fund and/or any
Series thereof, or of InterCapital Income Securities Inc., including amounts
payable to InterCapital pursuant to the Investment Management Agreement, for any
fiscal year ending on a date on which this Agreement is in effect, exceed the
expense limitations applicable to the Fund and/or any Series thereof imposed by
state securities laws or regulations thereunder, as such limitations may be
raised or lowered from time to time, or, in the case of InterCapital Income
Securities Inc. or Dean Witter Variable Investment Series or any Series thereof,
the expense limitation specified in the Fund's Investment Management Agreement,
the fee payable hereunder shall be reduced on a pro rata basis in the same
proportion as the fee payable by the Fund under the Investment Management
Agreement is reduced.

     6. DWS shall bear the cost of rendering the administrative 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 employed by DWS,
and such clerical help and bookkeeping services as DWS shall reasonably require
in performing its duties hereunder.

     7. DWS will use its best efforts in the performance of administrative
activitives on behalf of each Fund, but in the absence of willful misfeasance,
bad faith, gross negligence or reckless disregard of its obligations hereunder,
DWS 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 DWS or for any losses
sustained by the Fund or its investors. It is understood that, subject to the
terms and conditions of the Investment Management Agreement between each Fund
and InterCapital, InterCapital shall retain ultimate responsibility for all
services to be performed hereunder by DWS. DWS shall indemnify InterCapital and
hold it harmless from any liability that InterCapital may incur arising out of
any act or failure to act by DWS in carrying out its responsibilities hereunder.
 
     8. It is understood that any of the shareholders, Directors/Trustees,
officers and employees of the Fund may be a shareholder, director, officer or
employee of, or be otherwise interested in, DWS, and in any person controlling,
controlled by or under common control with DWS, and that DWS and any person
controlling, controlled by or under common control with DWS may have an interest
in the Fund. It is also understood that DWS and any affiliated persons thereof
or any persons controlling, controlled by or under common control with DWS have
and may have advisory, management, administration service or other contracts
with other organizations and persons, and may have other interests and
businesses, and further may purchase, sell or trade any securities or
commodities for their own accounts or for the account of others for whom they
may be acting.
 
     9. This Agreement shall continue until April 30, 1994, and thereafter shall
continue automatically for successive periods of one year unless terminated by
either party by written notice delivered to the other party within 30 days of
the expiration of the then-existing period. Notwithstanding the foregoing, this
Agreement may be terminated at any time, by either party on 30 days' written
notice delivered to the other party. In the


                                        2


<PAGE>

event that the Investment Management Agreement between any Fund and InterCapital
is terminated, this Agreement will automatically terminate with respect to such
Fund.

     10. This Agreement may be amended or modified by the parties in any manner
by mutual written agreement executed by each of the parties hereto.

     11. This Agreement shall be construed and interpreted in accordance with
the laws of the State of New York.
 
     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 INTERCAPITAL INC.

                                   By: ____________________________

Attest:

__________________________

                                   DEAN WITTER SERVICES COMPANY INC.

                                   By: _____________________________

Attest:

__________________________


                                        3


<PAGE>

                                   SCHEDULE A

                                DEAN WITTER FUNDS
                              at December 31, 1993

Open-End Funds

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

Closed-End Funds
44. High Income Advantage Trust
45. High Income Advantage Trust II
46. High Income Advantage Trust III
47. InterCapital Income Securities Inc.
48. Dean Witter Government Income Trust
49. InterCapital Insured Municipal Bond Trust
50. InterCapital Insured Municipal Trust
51. InterCapital Insured Municipal Income Trust
52. InterCapital California Insured Municipal Income Trust
53. InterCapital Quality Municipal Investment Trust
54. InterCapital Quality Municipal Income Trust
55. InterCapital Quality Municipal Securities
56. InterCapital California Quality Municipal Securities
57. InterCapital New York Quality Municipal Securities


                                        4


<PAGE>

                          DEAN WITTER SERVICES COMPANY

                SCHEDULE OF ADMINISTRATIVE FEES - JANUARY 1, 1994

MONTHLY COMPENSATION CALCULATED DAILY BY APPLYING THE FOLLOWING ANNUAL RATES TO
A FUND'S NET ASSETS:


Dean Witter U.S. Government   0.050% of the portion of such daily net assets 
    Securities Trust          not exceeding $1 billion; 0.0475% of the portion
                              of such daily net assets exceeding $1 billion but
                              not exceeding $1.5 billion; 0.045% of the portion
                              of such daily net assets exceeding $1.5 billion
                              but not exceeding $2 billion; 0.0425% of the
                              portion of such daily net assets exceeding $2
                              billion but not exceeding $2.5 billion; 0.040% of
                              that portion of such daily net assets exceeding
                              $2.5 billion but not exceeding $5 billion; 0.0375%
                              of that portion of such daily net assets exceeding
                              $5 billion but not exceeding $7.5 billion; 0.035%
                              of that portion of such daily net assets exceeding
                              $7.5 billion but not exceeding $10 billion;
                              0.0325% of that portion of such daily net assets
                              exceeding $10 billion but not exceeding $12.5
                              billion; and 0.030% of that portion of such daily
                              net assets exceeding $12.5 billion. 


<PAGE>


                       CONSENT OF INDEPENDENT ACCOUNTANTS



We hereby consent to the use in the Statement of Additional Information
constituting part of this Post-Effective Amendment No. 11 to the Registration
Statement on Form N-1A (the "Registration Statement") of our report dated
January 31, 1994, relating to the financial statements and financial highlights
of Dean Witter U.S. Government Securities Trust, which appears in such Statement
of Additional Information, and to the incorporation by reference of our report
into the Prospectus which constitutes part of this Registration Statement.  We
also consent to the references to us under the headings "Financial Highlights"
in the Prospectus and "Independent Accountants" and "Experts" in the Statement
of Additional Information.




PRICE WATERHOUSE

1177 Avenue of the Americas
New York, New York
February 15, 1994




0249Y

<PAGE>

        AMENDED AND RESTATED PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1
                                       OF
                  DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST

     WHEREAS, Dean Witter U.S. Government Securities 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 April 28, 1988, the Fund amended and restated a Plan of
Distribution pursuant to Rule 12b-1 under the Act which had initially been
adopted on May 1, 1984, and the Trustees then determined that there was a
reasonable likelihood that adoption of 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, on May 1, 1984, the Fund and Dean Witter Reynolds Inc. ("DWR")
entered into a Distribution Agreement pursuant to which the Fund employed DWR as
distributor of the Fund's shares; 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 January 4, 1993, 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 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 herein, in accordance with
Rule 12b-1 under the Act on the following terms and conditions:

     1.  The Fund shall pay to the Distributor, as the distributor of securities
of which the Fund is the issuer, compensation for distribution of its shares at
the rate of the lesser of (i) 0.75% (0.65% on amounts over $10 billion) per
annum of the average daily aggregate sales of the shares of the Fund since its
inception (not including reinvestment of dividends and capital gains
distributions from the Fund) less the average daily aggregate net asset value of
the shares of the Fund redeemed since the Fund's inception upon which a
contingent deferred sales charge has been imposed or upon which such charge has
been waived, or (ii) 0.75% (0.65% on amounts over $10 billion) per annum of the
Fund's average daily net assets. Such compensation shall be calculated and
accrued daily and paid monthly or at such other intervals as the Trustees shall
determine. 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 who provide distribution and shareholder services. All
payments made hereunder pursuant to the Plan shall be in accordance with the
terms and limitations of the Rules of Fair Practice of the National Association
of Securities Dealers, Inc.

     2.  The amount set forth in paragraph 1 of this Plan shall be paid for
services of the Distributor, DWR, its affiliates and other broker-dealers it
may select in connection with the distribution of the Fund's shares, including
personal services to shareholders with respect to their holdings of Fund shares,
and may be spent by the Distributor, DWR, its affiliates and such broker-dealers
on any activities or expenses related to the distribution of the Fund's shares
or services to shareholders, including, but not limited to: compensation to, and
expenses of, account executives or other employees of the Distributor, DWR, its
affiliates or other broker-dealers; overhead and other branch office
distribution-related expenses and telephone expenses of persons who engage in
or support distribution of shares or who provide personal services to
shareholders; printing of prospectuses and reports for other than existing
shareholders; preparation, printing and distribution of sales literature and
advertising materials and opportunity costs in incurring the foregoing expenses
(which may be calculated as a carrying charge on the excess of the distribution
expenses incurred by the Distributor, DWR, its affiliates or other
broker-dealers over distribution revenues received by them). The overhead and
other branch office distribution-related expenses referred to in this
paragraph 2 may include: (a) the expenses of operating the branch offices of the
Distributor or other broker-dealers, including DWR, in connection with the sale
of Fund shares, including lease costs, the salaries and employee benefits of
operations and sales support personnel, utility costs, communications costs and
the costs of stationery and supplies; (b) the costs of client sales seminars;
(c) travel expenses of mutual fund sales coordinators to promote the sale of
Fund shares; and (d) other expenses relating to branch promotion of Fund sales.

                                       1
<PAGE>

     3.  This Plan, as amended and restated, shall not take effect until it has
been approved, together with any related agreements, by votes of a majority of
the Board of Trustees of the Fund and of the Trustees who are not "interested
persons" of the Fund (as defined in the Act) and have no direct or indirect
financial interest in the operation of this Plan or any agreements related to
it (the "Rule 12b-1 Trustees"), cast in person at a meeting (or meetings) called
for the purpose of voting on this Plan and such related agreements.

     4.  This Plan shall continue in effect until April 30, 1993, 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 3 hereof.

     5.  The Distributor shall provide to the Trustees of the Fund and the
Trustees shall review, at least quarterly, a written report of the amounts so
expended and the purposes for which such expenditures were made. In this
regard, the Trustees shall request the Distributor to specify such items of
expenses as the Trustees deem appropriate. The Trustees shall consider such
items as they deem relevant in making the determinations required by paragraph 4
hereof.

     6.  This Plan may be terminated at any time by vote of a majority of the
Rule 12b-1 Trustees, or by vote of a majority of the outstanding voting
securities of the Fund. In the event of any such termination or in the event of
nonrenewal, the Fund shall have no obligation to pay expenses which have been
incurred by the Distributor, DWR, its affiliates or other broker-dealers in
excess of payments made by the Fund pursuant to this Plan. However, this shall
not preclude consideration by the Trustees of the manner in which such excess
expenses shall be treated.

     7.  This Plan may not be amended to increase materially the amount the Fund
may spend for distribution provided in paragraph 1 hereof unless such amendment
is approved by a vote of at least a majority (as defined in the Act) of the
outstanding voting securities of the Fund, and no material amendment to the Plan
shall be made unless approved in the manner provided for approval in
paragraph 3 hereof.

     8.  While this Plan is in effect, the selection and nomination of Trustees
who are not interested persons (as defined in the Act) of the Fund shall
be committed to the discretion of the Trustees who are not interested persons.

     9.  The Fund shall preserve copies of this Plan and any related agreements
and all reports made pursuant to paragraph 5 hereof, for a period of not
less than six years from the date of this Plan, any such agreement or any such
report, as the case may be, the first two years in an easily accessible place.

    10.  The Declaration of Trust establishing Dean Witter U.S. Government
Securities Trust, dated September 29, 1983, 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 U.S. Government Securities 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 U.S.
Government Securities 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 U.S.
Government Securities Trust, but the Trust Estate only shall be liable.

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

<TABLE>
<S>                                                   <C>
Date: May 1, 1984                                      DEAN WITTER U.S. GOVERNMENT
      As amended on April 28, 1988,                    SECURITIES TRUST
      January 4, 1993 and April 28, 1993
                                                       By
                                                       .....................................................
Attest:
 ....................................................
                                                       DEAN WITTER DISTRIBUTORS INC.
                                                       By
                                                       .....................................................
Attest:
 ....................................................
                                                       DEAN WITTER REYNOLDS INC.
                                                       By
                                                       .....................................................
Attest:
 ....................................................
</TABLE>

                                       2

<PAGE>

                  DEAN WITTER U.S. GOVERNMENT SECURITIES TRUST

                   SCHEDULE OF COMPUTATION OF YIELD QUOTATION

                                DECEMBER 31, 1993




                             6
YIELD = 2 { [ ((a-b) /cd)  +1] -1}



WHERE:                   a = Dividends and interest earned during the period
                         b = Expenses accrued for the period
                         c = The average daily number of shares outstanding
                             during the period that were entitled to receive
                             dividends
                         d = The maximum offering price per share on the last
                             day of the period




                                                                  6
YIELD = 2 { [ ((62,523,651 - 12,305,935) /1,313,358,573 X 9.31) +1] -1}

                                     = 4.98%
<PAGE>


               SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS

                        U.S. GOVERNMENT SECURITIES TRUST


(A) AVERAGE ANNUAL TOTAL RETURNS (I.E. STANDARDIZED COMPUTATIONS)



                  _                                    _
                  |        ______________________ |
FORMULA:          |       |            |
                  |  /\ n |           ERV        |
          T  =    |    \  |        ------------------ | - 1
                  |     \ |           P         |
                  |      \|            |
                  |_                   _|

          T = AVERAGE ANNUAL TOTAL RETURN
          n = NUMBER OF YEARS
         ERV = ENDING REDEEMABLE VALUE
          P = INITIAL INVESTMENT

<TABLE>
<CAPTION>

                                                    (A)
$1,000            ERV AS OF       NUMBER OF        AVERAGE ANNUAL 
INVESTED - P      31-Dec-93       YEARS - n        TOTAL RETURN - T
- -------------     -----------     ------------     -----------------
<S>               <C>             <C>              <C>
31-Dec-92         $1,021.30               1                   2.13%

31-Dec-88         $1,502.00               5                   8.48%

29-Jun-84         $2,308.70            9.50                   9.20%

</TABLE>

(B) AVERAGE ANNUAL TOTAL RETURNS WITHOUT DEDUCTION FOR APPLICABLE
    SALES CHARGE  (NON STANDARD COMPUTATIONS)

(C) TOTAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)

                 _                                                _
                 |        ______________________  |
FORMULA:         |       |             |
                 |  /\ n |            EV         |
         t  =    |    \  |          --------------------------  | - 1
                 |     \ |            P         |
                 |      \|             |
                 |_                    _|

                    EV
        TR  =    ---------- - 1
                    P

          t = AVERAGE ANNUAL TOTAL RETURN 
             (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
          n = NUMBER OF YEARS
         EV = ENDING VALUE (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
          P = INITIAL INVESTMENT
         TR = TOTAL RETURN (NO DEDUCTION FOR APPLICABLE SALES CHARGE)

<TABLE>
<CAPTION>

                                 (C)                             (B)
$1,000            EV AS OF      TOTAL           NUMBER OF       AVERAGE ANNUAL 
INVESTED - P      31-Dec-93     RETURN - TR     YEARS - n       TOTAL RETURN - t
- ------------      ---------     -----------     ------------    ----------------
<S>               <C>           <C>             <C>             <C>
31-Dec-92         $1,071.30           7.13%                1               7.13%

31-Dec-88         $1,521.70          52.17%                5               8.76%

29-Jun-84         $2,308.70         130.87%             9.50               9.20%

</TABLE>

(E)       GROWTH OF $10,000
(F)       GROWTH OF $50,000
(G)       GROWTH OF $100,000


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


<TABLE>
<CAPTION>

                                      (E)                       (F)                        (G)
$10,000                TOTAL          GROWTH OF                 GROWTH OF                  GROWTH OF
INVESTED - P     RETURN - TR          $10,000 INVESTMENT-G      $50,000 INVESTMENT-G       $100,000 INVESTMENT-G
- --------------   ------------------   ------------------------------------------  ------------------------------
<S>              <C>                  <C>                       <C>                        <C>
29-Jun-84             130.87               $23,087                        $115,435                  $230,870

</TABLE>


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