DEAN WITTER MULTI STATE MUNICIPAL SERIES TRUST
N-30D, 1996-07-30
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<PAGE>





                DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
                            Two World Trade Center
                           New York, New York 10048

DEAR SHAREHOLDER:
- -----------------------------------------------------------------------------

   During the first six months of Dean Witter Multi-State Municipal Series
Trust's current fiscal year, interest rates initially declined, but reversed
direction in February and began to move higher. Last year's favorable bond
market environment was created by proposals to achieve a balanced federal
budget within five to seven years and by continued easing of Federal Reserve
Board monetary policy. However, budget negotiations reached a political
impasse early in 1996 and federal offices were partially closed. This had an
adverse impact on bonds. Concerns also developed about an increase in the
pace of the economic recovery, which was marked by unexpectedly strong job
growth and rising commodity prices. The bond market reacted to these
developments by pushing yields sharply higher.

MUNICIPAL MARKET CONDITIONS

   Long-term municipal revenue bond yields as tracked by The Bond Buyer
Revenue Bond Index * moved from 5.78 percent in November 1995 to a low of
5.63 percent in January 1996. Interest rates subsequently began to rise in
mid-February on signs of stronger economic growth and renewed inflationary
fears. The Index yield reached 6.17 percent in May. Yields on one-year
municipal notes increased slightly from 3.59 percent to 3.73 percent over the
past six months. The yield curve pickup by extending maturities from 1 to 30
years was 244 basis points in May.

   The risk of flat-tax legislation had caused the ratio of Revenue Bond
Index yields to 30-year U.S. Treasury bond yields to rise from 85 to 94
percent between March and September 1995. However, as the prospects of a flat
tax faded, the ratio improved to 89 percent by the end of May. A declining
ratio means that municipal bond prices have outperformed U.S. Treasury
prices. Over the previous eight-year period prior to the flat-tax debate,
long-term municipal yields averaged 89 percent of U.S. Treasury yields.

   Municipal underwriting activity was fueled by the trend of lower interest
rates in 1995. During the first five months of 1996, new issue volume
increased 39 percent versus the same period a year ago. Despite a resurgence
in underwriting, dealers have continued to withdraw from the municipal
business.

PORTFOLIO STRUCTURE

   The Multi-State Municipal Series continued to meet its investment
objective of a high level of current income exempt from both federal and
state income taxes consistent with preservation of capital. As interest rates
began to rise over the course of the period the portfolios increased their
cash and short-term investment positions. The average cash position moved
from 4 percent of net assets in November 1995 to 7 percent of net assets by
May 31, 1996. New investments in the Series' focused on high quality issues.
On average, over 65 percent of the bonds held were rated triple "A" or double
"A" by Moody's Investor Service Inc. and/or Standard & Poor's Corp. The
average maturity was maintained at 20 years. Average call protection improved
from 7.5 to 8 years.

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

   * The Bond Buyer Revenue Bond Index is an arithmetic average of the yields
of 25 selected municipal revenue bonds with 30-year maturities. Credit
ratings of these bonds range from Aa1 to Baa1 by Moody's Investors Service,
Inc., and AA+ to A-by Standard & Poor's Corp.



         
<PAGE>

   For your convenience, we have summarized details regarding the various
individual state Series on the following pages. Here you will find
information on credit quality, maturity, call protection, distributions,
performance and tax-free and taxable equivalent yields. Please note that the
Massachusetts, Michigan, Minnesota, New York and Ohio Series will continue to
have operating expenses in excess of 50 basis points (0.50 percent) of daily
net assets absorbed by the Investment Manager through December 31, 1996.

LOOKING AHEAD

   Tax-reduction proposals may receive additional publicity. However, the
balance between the supply of new issues and demand created by maturities and
calls for redemption should remain positive for the municipal market.
Long-term municipal securities currently yield 89 percent of the yield on
U.S. Treasury securities and may be expected to move in tandem with the
Treasury market.

   We appreciate your ongoing support of Dean Witter Multi-State Municipal
Series Trust and look forward to continuing to serve your investment needs.

                                               Very truly yours,

                                           /s/ Charles A. Fiumefreddo
                                               ----------------------
                                               Charles A. Fiumefreddo
                                               Chairman of the Board



         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
PORTFOLIO SUMMARY May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                     ARIZONA       CALIFORNIA      FLORIDA       MASSACHUSETTS
                                      SERIES         SERIES         SERIES          SERIES
                                  ------------  --------------  ------------  -----------------
<S>                               <C>           <C>             <C>           <C>
Credit Ratings (1):
 Aaa or AAA .....................      42%            38%            62%              42%
 Aa or AA .......................      32             23             19               9
 A or A .........................      22             29             12               43
 Baa or BBB .....................       4             10              2               6
 Ba or BB .......................      --             --             --               --
 Non-Rated ......................      --             --              5               --
Average Weighted:
 Maturity .......................    18 Years       20 Years       20 Years        20 Years
 Call Protection ................     7 Years        8 Years        8 Years         8 Years
Per Share Net Asset Value:
 November 30, 1995 ..............     $10.65         $10.67         $10.88          $10.97
 May 31, 1996 ...................     $10.25         $10.37         $10.46          $10.56
Distributions (2) ...............      $0.27          $0.28          $0.28           $0.30
Total Return (3):
 6 months ended 5/31/96 .........     (1.24)%        (0.20)%        (1.36)%          (0.97)%
 12 months ended 5/31/96 ........      3.37 %         4.15 %         3.10 %           3.89 %
Tax-Free Yield (4) ..............      4.76 %         5.16 %         4.95 %           5.15 %
Taxable Equivalent Yield (5)  ...      8.35 %         9.60 %         8.20 %           9.69 %

</TABLE>

(1)    Represents Moody's or Standard & Poor's ratings of the credit quality
       of the long-term bonds owned by each Series.

(2)    Includes all income dividends and capital gains distributions, if any,
       paid by each Series for the six months ended May 31, 1996.

(3)    Total return figures represent the change in the Series' total value
       for each period measured, taking into account the change in NAV plus
       compounded, reinvested dividends.

(4)    Yields were calculated for the 30-day period ended May 31, 1996
       following the SEC yield formula (based on adjusted net asset value).

(5)    Assumes the top federal income tax rate and the top effective state
       income tax rate, if any, and includes the effect of fully deducting
       state taxes on your federal return.



         
<PAGE>


<TABLE>
<CAPTION>
   MICHIGAN      MINNESOTA      NEW JERSEY      NEW YORK       OHIO       PENNSYLVANIA
    SERIES        SERIES          SERIES         SERIES       SERIES         SERIES
- ------------  -------------  --------------  ------------  ------------  ---------------
<S>           <C>            <C>             <C>           <C>           <C>
     58%            23%            45%            31%           56%             54%
     35             44             19             17            18              24
      7             20             19             41            22              14
     --             13             12             11             4               8
     --             --              2             --            --              --
     --             --              3             --            --              --

   22 Years      19 Years        20 Years       22 Years      21 Years        20 Years
    7 Years       8 Years         8 Years        9 Years       9 Years         9 Years

    $10.81        $10.61          $10.73         $10.88        $10.80          $10.85
    $10.44        $10.29          $10.32         $10.46        $10.41          $10.48
     $0.28         $0.28           $0.28          $0.28         $0.28           $0.28

    (0.83)%        (0.44)%        (1.26)%        (1.29)%       (1.07)%         (0.89)%
     4.15 %         4.42 %         3.09 %         3.93 %        4.03 %          3.71 %
     5.27 %         5.05 %         5.07 %         5.17 %        5.20 %          5.06 %
     9.13 %         9.14 %         8.97 %         9.22 %        9.31 %          8.62 %
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- ARIZONA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
 AMOUNT (IN                                                                           COUPON     MATURITY
 THOUSANDS)                                                                            RATE        DATE          VALUE
- -----------                                                                         ---------  -----------  -------------
<S>          <C>                                                                    <C>        <C>          <C>
             ARIZONA TAX-EXEMPT MUNICIPAL BONDS (89.6%)
             GENERAL OBLIGATION (11.9%)
   $  200    Chandler, Sierra Vista Refg Ser 1991 (FGIC) ..........................     7.00%    07/01/12     $  217,242
    1,000    Paradise Valley Unified School District #69, Ser B 1995 (MBIA)  ......     5.25     07/01/15        926,100
             Phoenix,
    1,000     Refg Ser 1993 A .....................................................     5.25     07/01/12        956,010
    1,550     Refg Ser 1992 .......................................................     6.375    07/01/13      1,618,959
      750    Tucson, Refg Ser 1995 (FGIC) .........................................     5.50     07/01/12        736,620
    1,000    Tucson Unified School District #1, 1989 Ser D 1992 (FGIC)  ...........     6.10     07/01/11      1,032,090
- -----------                                                                                                 -------------
    5,500                                                                                                      5,487,021
- -----------                                                                                                 -------------
             EDUCATIONAL FACILITES REVENUE (6.2%)
    1,000    Arizona Board of Regents, Arizona State University Ser 1992 A  .......     5.50     07/01/19        926,150
    1,000    Arizona State University, Research Park Refg Ser 1995 (MBIA)  ........     5.00     07/01/21        878,150
    1,000    University of Arizona, Telecommunications Ser 1991 COPs  .............     6.50     07/15/12      1,065,390
- -----------                                                                                                 -------------
    3,000                                                                                                      2,869,690
- -----------                                                                                                 -------------
             ELECTRIC REVENUE (2.2%)
    1,000    Salt River Agricultural Improvement & Power District, Refg 1992 Ser D      6.25     01/01/27      1,013,770
- -----------                                                                                                 -------------

             HOSPITAL REVENUE (10.8%)
             Arizona Health Facilities Authority,
    1,150     Phoenix Baptist Hospital & Medical Center Inc & Medical
               Environments Inc Ser 1992 (MBIA) ...................................     6.25     09/01/11      1,189,077
      700     Phoenix Memorial Hospital Refg Ser 1991 .............................     8.20     06/01/21        750,568
    2,000    Maricopa County Industrial Development Authority, Catholic Healthcare
              West 1992 Ser A (MBIA) ..............................................     5.75     07/01/11      1,993,900
    1,100    Pima County Industrial Development Authority, Carondelet Health Care
              Corp Ser 1993 (MBIA) ................................................     5.25     07/01/13      1,039,467
- -----------                                                                                                 -------------
    4,950                                                                                                      4,973,012
- -----------                                                                                                 -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (10.1%)
    1,000    Greenlee County Industrial Development Authority, Phelps Dodge Corp
              Refg 1994 ...........................................................     5.45     06/01/09        965,170
    2,000    Mohave County Industrial Development Authority, Citizens Utilities Co
              1993 Ser B (AMT) ....................................................     5.80     11/15/28      1,936,940
    1,700    Santa Cruz County Industrial Development Authority, Citizens Utilities
              Co 1991 Ser (AMT) ...................................................     7.15     02/01/23      1,781,719
- -----------                                                                                                 -------------
    4,700                                                                                                      4,683,829
- -----------                                                                                                 -------------
             MORTGAGE REVENUE -MULTI-FAMILY (2.2%)
      970    Pima County Industrial Development Authority, Rancho Mirage Ser 1992
              (AMT) (AGRC) ........................................................     7.05     04/01/22      1,010,672




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- ARIZONA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)


 PRINCIPAL
 AMOUNT (IN                                                                           COUPON     MATURITY
 THOUSANDS)                                                                            RATE        DATE          VALUE
- -----------                                                                         ---------  -----------  -------------
             MORTGAGE REVENUE - SINGLE FAMILY (1.9%)
             Maricopa County Industrial Development Authority,
   $   415    1991 Ser A ..........................................................     7.375%    08/01/05    $   437,452
       400    1991 Ser A ..........................................................     7.50      08/01/12        417,692
- -----------                                                                                                 -------------
       815                                                                                                        855,144
- -----------                                                                                                 -------------
             PUBLIC FACILITIES REVENUE (3.9%)
             Arizona,
       500    Refg Ser 1992 B COPs (AMBAC) ........................................     6.25      09/01/10        519,510
       500    Ser 1991 COPs (FSA) .................................................     6.25      09/01/11        519,095
       700   Puerto Rico Infrastructure Financing Authority, Special Tax Ser 1988 A     7.90      07/01/07        757,939
- -----------                                                                                                 -------------
     1,700                                                                                                      1,796,544
- -----------                                                                                                 -------------
             TRANSPORTATION FACILITIES REVENUE (17.2%)
             Phoenix,
     2,000    Street & Highway User Refg Ser 1993 .................................     5.125     07/01/11      1,869,400
     1,000    Street & Highway User Ser 1992 ......................................     6.25      07/01/11      1,043,540
     2,000   Phoenix Civic Improvement Corporation, Airport Terminal Excise Tax
              Ser 1989 (AMT) ......................................................     7.80      07/01/11      2,102,440
             Tuscon,
     1,000    Street & Highway User Sr Lien Refg Ser 1993 .........................     5.50      07/01/09        988,930
     1,000    Street & Highway User Sr Lien Refg Ser 1996 (MBIA) ..................     6.00      07/01/10      1,038,560
     1,000   Puerto Rico Highway & Transportation Authority, Refg Ser X  ..........     5.25      07/01/21        881,000
- -----------                                                                                                 -------------
     8,000                                                                                                      7,923,870
- -----------                                                                                                 -------------
             WATER & SEWER REVENUE (17.3%)
     1,000   Arizona Wastewater Management Authority, Wastewater Ser 1992 A
              (AMBAC) .............................................................     5.95      07/01/12      1,018,940
             Chandler,
       750    Water & Sewer Refg Ser 1991 (FGIC) ..................................     7.00      07/01/12        814,658
     1,000    Water & Sewer Refg Ser 1992 (FGIC) ..................................     6.25      07/01/13      1,035,170
     1,000   Gilbert, Water & Wastewater Refg Ser 1992 (FGIC) .....................     6.50      07/01/22      1,045,630
             Phoenix Civic Improvement Corporation,
     1,000    Wastewater Refg Ser 1993 ............................................     4.75      07/01/23        816,440
     1,000    Wastewater Jr Lien Ser 1994 .........................................     5.45      07/01/19        918,850
     2,200   Tucson, Water Refg Ser 1991 ..........................................     6.50      07/01/16      2,323,552
- -----------                                                                                                 -------------
     7,950                                                                                                      7,973,240
- -----------                                                                                                 -------------
             REFUNDED (5.9%)
     1,500   Arizona Transportation Board, Sub Highway Ser 1991 A .................     6.50      07/01/01++    1,631,415
     1,000   Central Arizona Water Conservation District, Ser 1991 B  .............     6.50      05/01/01++    1,088,540
- -----------                                                                                                 -------------
     2,500                                                                                                      2,719,955
- -----------                                                                                                 -------------
    41,085   TOTAL ARIZONA TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $40,581,674) .......................    41,306,747
- -----------                                                                                                 -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- ARIZONA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)


 PRINCIPAL
 AMOUNT (IN                                                                           COUPON     MATURITY
 THOUSANDS)                                                                            RATE        DATE          VALUE
- -----------                                                                         ---------  -----------  -------------
             SHORT-TERM ARIZONA TAX-EXEMPT MUNICIPAL OBLIGATIONS (8.2%)
   $ 1,800   Maricopa County, Arizona Public Service Co Palo Verde 1994 Ser C
              (Demand 06/03/96) ...................................................    3.60* %   05/01/29     $ 1,800,000
     2,000   Pinal County Industrial Development Authority, Newmont Mining Corp
              Ser 1984 (Demand 06/03/96) ..........................................    3.80*     12/01/09       2,000,000
- -----------                                                                                                 -------------
     3,800   TOTAL SHORT-TERM ARIZONA TAX-EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $3,800,000) ................................................................     3,800,000
- -----------                                                                                                 -------------
   $44,885   TOTAL INVESTMENTS (IDENTIFIED COST $44,381,674) (A) .............................      97.8%      45,106,747
  ========   CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ..................................       2.2        1,001,974
                                                                                                  ------    -------------
             NET ASSETS ......................................................................     100.0%     $46,108,721
                                                                                                  ======    =============
</TABLE>

- --------------
   AMT     Alternative Minimum Tax.
   COPs    Certificates of Participation.
    ++     Prerefunded to call date shown.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $1,350,726 and the aggregate gross unrealized depreciation was
           $625,653, resulting in net unrealized appreciation of $725,073.

Bond Insurance:
- ---------------

   AGRC    Asset Guaranty Reinsurance Company.
   AMBAC   AMBAC Indemnity Corporation.
   FGIC    Financial Guaranty Insurance Company.
    FSA    Financial Security Assurance Inc.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- CALIFORNIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
AMOUNT (IN                                                                              COUPON    MATURITY
THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------  -----------------------------------------------------------------------  --------  -----------  --------------
<S>          <C>                                                                     <C>        <C>          <C>
             CALIFORNIA TAX-EXEMPT MUNICIPAL BONDS (92.2%)
             GENERAL OBLIGATION (4.2%)
   $ 2,000   California, Various Purpose dtd 04/01/93 (FSA) .........................    5.50%    04/01/19     $ 1,869,300
     3,000   Mojave Water Agency, Impr Dist M Morongo Basin Pipeline
              Refg Ser 1996 (FGIC) ..................................................    5.80     09/01/22       2,920,860
- -----------                                                                                                  --------------
     5,000                                                                                                       4,790,160
- -----------                                                                                                  --------------
             EDUCATIONAL FACILITIES REVENUE (11.8%)
             California Educational Facilities Authority,
     3,000    Carnegie Institution of Washington 1993 Ser A .........................    5.60     10/01/23       2,782,650
     4,000    Claremont Colleges Ser 1992 ...........................................    6.375    05/01/22       4,028,120
     2,000    Loyola Marymount University Refg Ser 1992 .............................    6.00     10/01/14       1,935,100
     2,500    University of Southern California Ser 1993 B ..........................    5.80     10/01/15       2,409,800
     2,000   California Public Works Board, California State University 1992 Ser A  .    6.70     10/01/17       2,095,880
- -----------                                                                                                  --------------
    13,500                                                                                                      13,251,550
- -----------                                                                                                  --------------
             ELECTRIC REVENUE (11.4%)
     2,000   Kings River Conservation District, Pine Flat Power Ser D  ..............    6.00     01/01/17       1,955,980
     3,000   Los Angeles Department of Water & Power, Refg Issue of 1993  ...........   5.375     09/01/23       2,705,160
     1,750   Northern California Power Agency, Geothermal #3 1993 Refg Ser 3  .......    5.85     07/01/10       1,766,642
     7,000   Southern California Public Power Authority, Mead -Phoenix (AMBAC)  .....    5.15     07/01/15       6,388,480
- -----------                                                                                                  --------------
    13,750                                                                                                      12,816,262
- -----------                                                                                                  --------------
             HOSPITAL REVENUE (13.2%)
     1,000   Berkeley, Alta Bates Medical Center Refg Ser A .........................    6.50     12/01/11         987,530
             California Health Facilities Financing Authority,
     2,000    Catholic Health Corp Ser 1992 (MBIA) ..................................    6.00     07/01/13       2,003,680
     3,150    Downey Community Hospital Ser 1993 ....................................    5.75     05/15/15       2,930,161
     2,000    Kaiser Permanente 1983 Ser ............................................    5.45     10/01/13       1,861,920
     3,000    Scripps Memorial Hospitals Ser 1992 A (MBIA) ..........................    6.375    10/01/22       3,070,650
     2,000   California Statewide Communities Development Authority,
              Cedars Sinai Medical Center Ser 1992 COPs .............................    6.50     08/01/12       2,120,300
     2,000   Duarte, City of Hope National Medical Center COPs ......................    6.00     04/01/08       1,953,520
- -----------                                                                                                  --------------
    15,150                                                                                                      14,927,761
- -----------                                                                                                  --------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (1.8%)
             California Pollution Control Financing Authority,
     1,000    Atlantic Richfield Co Ser 1996 A ......................................    5.00     04/01/08         963,250
     1,000    Pacific Gas & Electric Co 1992 Ser A (AMT) ............................    6.625    06/01/09       1,049,800
- -----------                                                                                                  --------------
     2,000                                                                                                       2,013,050
- -----------                                                                                                  --------------
             MORTGAGE REVENUE -MULTI-FAMILY (1.8%)
     2,000   California Housing Finance Agency, Rental II 1992 Ser B ................    6.70     08/01/15       2,050,240
- -----------                                                                                                  --------------
             MORTGAGE REVENUE -SINGLE FAMILY (1.5%)
       690   California Housing Finance Agency, Home 1991 Ser C (AMT) (MBIA)  .......    7.00     08/01/23         715,116
       975   Puerto Rico Housing Finance Corporation, Portfolio One GNMA-Backed
              Ser C .................................................................    6.85     10/15/23       1,008,404
- -----------                                                                                                  --------------
     1,665                                                                                                       1,723,520
- -----------                                                                                                  --------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- CALIFORNIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

PRINCIPAL
AMOUNT (IN                                                                              COUPON    MATURITY
THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------  -----------------------------------------------------------------------  --------  -----------  --------------
             PUBLIC FACILITIES REVENUE (8.9%)
   $ 2,000   Los Angeles County, 1991 Master Refg COPs ..............................    6.708%   05/01/15     $ 2,016,280
     2,000   Nevada County, Western Nevada County Solid Waste Mgmt 1991 COPs  .......    7.50     06/01/21       2,010,560
     2,000   San Jose Financing Authority, Convention Center Refg 1993 Ser C  .......    6.375    09/01/13       2,021,120
     2,700   Torrance, Refg 1991 COPs ...............................................    6.80     07/01/12       2,850,039
     1,000   Puerto Rico Infrastructure Financing Authority, Special Tax Ser 1988 A      7.90     07/01/07       1,082,770
- -----------                                                                                                  --------------
     9,700                                                                                                       9,980,769
- -----------                                                                                                  --------------
             TAX ALLOCATION (4.2%)
     1,000   Industry Urban-Development Agency, Transportation-Distribution-
              Industrial Redev Proj #3 1992 Refg ....................................    6.90     11/01/16       1,044,030
     1,000   Riverside County Redevelopment Agency, Proj #4 1991 Ser A  .............    7.50     10/01/26       1,068,360
     3,000   Rosemead Redevelopment Agency, Proj #1 Ser 1993 A ......................    5.50     10/01/18       2,613,810
- -----------                                                                                                  --------------
     5,000                                                                                                       4,726,200
- -----------                                                                                                  --------------
             TRANSPORTATION FACILITIES REVENUE (9.4%)
     2,000   California Maritime Infrastructure Authority, San Diego Unified Port
              District-Lindbergh Field Ser 1995 (AMT) (AMBAC) .......................    5.25     11/01/15       1,818,560
     2,000   Los Angeles County Transportation Commission, Sales Tax Ser 1991-B  ....    6.50     07/01/13       2,081,440
     2,000   San Diego County Regional Transportation Commission, Sales Tax
              1994 Ser A (FGIC) .....................................................    4.75     04/01/08       1,854,200
             San Francisco Bay Area Rapid Transit District,
     1,000    Sales Tax Ser 1991 (FGIC) .............................................    6.60     07/01/12       1,064,700
     1,850    Sales Tax Ser 1995 (FGIC) .............................................    5.50     07/01/20       1,730,620
     2,000   Santa Clara Transit District, Sales Tax 1991 Ser A .....................    6.25     06/01/21       2,000,780
- -----------                                                                                                  --------------
    10,850                                                                                                      10,550,300
- -----------                                                                                                  --------------
             WATER & SEWER REVENUE (18.5%)
     1,000   Alameda County Water District, 1992 COPs (MBIA) ........................    6.20     06/01/13       1,015,860
             California Department of Water Resources,
     1,000    Central Valley Ser J-2 ................................................    6.00     12/01/20         987,370
     2,000    Central Valley Ser K ..................................................    6.00     12/01/21       1,954,080
     2,000   Central Coast Water Authority, Ser 1992 (AMBAC) ........................    6.50     10/01/14       2,087,260
     1,000   Contra Costa Water Authority, 1992 Ser E (AMBAC) .......................    6.25     10/01/12       1,062,250
     3,000   East Bay Municipal Utility District, Water Refg Ser 1992  ..............    6.00     06/01/20       2,958,720
             Los Angeles,
     1,000    Wastewater 1991 Ser C .................................................    7.10     06/01/18       1,068,150
     2,000    Wastewater Refg Ser 1993-A (MBIA) .....................................    5.70     06/01/20       1,916,860
     4,000   San Diego County Water Authority, Ser 1991-B COPs (MBIA)  ..............    6.30     04/08/21       4,090,520
     2,000   San Francisco Public Utilities Commission, Water 1992 Refg Ser A  ......    6.00     11/01/15       1,981,780
     2,000   Santa Rosa, Wastewater Refg 1996 Ser A (FGIC) ..........................    4.75     09/01/16       1,700,680
- -----------                                                                                                  --------------
    21,000                                                                                                      20,823,530
- -----------                                                                                                  --------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- CALIFORNIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

PRINCIPAL
AMOUNT (IN                                                                              COUPON    MATURITY
THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------  -----------------------------------------------------------------------  --------  -----------  --------------
             REFUNDED (5.5%)
  $  2,000   California Educational Facilities Authority, University of San Francisco
              Ser 1992 ..............................................................    6.40%     10/01/02++  $  2,208,220
     2,700   Mojave Water Agency, Impr Dist M Morongo Basin Pipeline Ser 1992  ......    6.60      09/01/02++     2,991,600
     1,000   San Diego County Regional Transportation Commission, Sales Tax
              1991 Ser A (ETM) ......................................................    6.00      04/01/08       1,041,210
- -----------                                                                                                  --------------
     5,700                                                                                                        6,241,030
- -----------                                                                                                  --------------
   105,315   TOTAL CALIFORNIA TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $103,507,137)  ...................    103,894,372
- -----------                                                                                                  --------------
             SHORT-TERM CALIFORNIA TAX-EXEMPT MUNICIPAL OBLIGATIONS (6.3%)
     3,600   California Pollution Control Financing Authority, Southern California
              Edison Co Ser 1986 B (Demand 06/03/96) ................................    3.80*     02/28/08       3,600,000
     3,500   Newport Beach, Hoag Memorial Hospital Presbyterian Ser 1992
              (Demand 06/03/96) .....................................................    3.60*     10/01/22       3,500,000
- -----------                                                                                                  --------------
     7,100   TOTAL SHORT-TERM CALIFORNIA TAX-EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $7,100,000) .................................................................      7,100,000
- -----------                                                                                                  --------------
  $112,415   TOTAL INVESTMENTS (IDENTIFIED COST $110,607,137) (A) .............................        98.5%    110,994,372
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ...................................         1.5       1,715,318
                                                                                                             --------------
             NET ASSETS .......................................................................       100.0%   $112,709,690
                                                                                                             ==============
</TABLE>

- -----------------
   AMT     Alternative Minimum Tax.
   COPs    Certificates of Participation.
   ETM     Escrowed to Maturity.
    ++     Prerefunded to call date shown.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $2,796,920 and the aggregate gross unrealized depreciation was
           $2,409,685, resulting in net unrealized appreciation of $387,235.

   Bond Insurance:
- ---------------
   AMBAC   AMBAC Indemnity Corporation.
   FGIC    Financial Guaranty Insurance Company.
    FSA    Financial Security Assurance Inc.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- FLORIDA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT (IN                                                                              COUPON    MATURITY
 THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------                                                                            --------  -----------  -------------
<S>          <C>                                                                       <C>       <C>          <C>
             FLORIDA TAX-EXEMPT MUNICIPAL BONDS (92.3%)
             GENERAL OBLIGATION (5.1%)
   $1,750    Florida Board of Education, Cap Outlay Refg Ser 1992 A ..................    6.40%    06/01/19     $1,819,895
    2,000    Reedy Creek Improvement District, Ser 1995 C (AMBAC) ....................    5.00     06/01/19      1,752,240
- -----------                                                                                                   -------------
    3,750                                                                                                        3,572,135
- -----------                                                                                                   -------------
             EDUCATIONAL FACILITIES REVENUE (2.1%)
    1,500    Volusia County Educational Facilities Authority, Embry-Riddle
- -----------   Aeronautical University Ser 1996 A .....................................    6.125    10/15/16      1,471,665
                                                                                                              -------------
             ELECTRIC REVENUE (11.7%)
    1,500    Gainesville, Utilities 1996 Ser A .......................................    5.20     10/01/22      1,345,680
    2,500    Jacksonville Electric Authority, St Johns River Power Park Issue 2 Ser 7.    5.50     10/01/14      2,364,575
             Orlando Utilities Commission,
    1,000     Refg Ser 1993 A ........................................................    5.25     10/01/14        918,240
    2,000     Ser 1993 ...............................................................    5.125    10/01/19      1,754,320
    2,000    Puerto Rico Electric Power Authority, Power Ser O .......................    5.00     07/01/12      1,768,960
- -----------                                                                                                   -------------
    9,000                                                                                                        8,151,775
- -----------                                                                                                   -------------
             HOSPITAL REVENUE (10.6%)
    1,000    Alachua County Health Facilities Authority, Shands Teaching Hospital &
              Clinics Ser 1996 A (MBIA) ..............................................    6.25     12/01/11      1,061,420
      500    Cape Canaveral Hospital District, Cape Canaveral Hospital Ser 1991 COPs
              (AMBAC) ................................................................    6.875    01/01/21        533,190
    1,000    Jacksonville, University Medical Center Inc Ser 1992 (Connie Lee)  ......    6.60     02/01/21      1,045,070
    1,000    Jacksonville Health Facilities Authority, Daughters of Charity/
              St Vincent's Medical Center Inc Ser 1993 A .............................    5.00     11/15/15        887,120
    1,000    Lakeland, Regional Medical Center Ser 1992 A (FGIC) .....................    6.125    11/15/22      1,009,480
    2,000    Orange County Health Facilities Authority, Adventist Health/Sunbelt
              Ser 1995 (AMBAC) .......................................................    5.25     11/15/20      1,804,100
    1,000    Polk County Industrial Development Authority, United Haven Hospital 1985
             Ser 2 (MBIA) ............................................................    6.25     09/01/15      1,023,130
- -----------                                                                                                   -------------
    7,500                                                                                                        7,363,510
- -----------                                                                                                   -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (6.0%)
             Citrus County,
    1,000     Florida Power Corp Refg Ser 1992 B .....................................    6.35     02/01/22      1,022,430
    2,000     Florida Power Corp Refg Ser 1992 A .....................................    6.625    01/01/27      2,085,020
    1,000    St Lucie County, Florida Power & Light Co Ser 1992 (AMT) ................    6.70     05/01/27      1,045,460
- -----------                                                                                                   -------------
    4,000                                                                                                        4,152,910
- -----------                                                                                                   -------------
             MORTGAGE REVENUE -SINGLE FAMILY (3.8%)
      705    Brevard County Housing Finance Authority, Refg Ser 1991 B (FSA)  ........    7.00     03/01/13        739,538
      555    Florida Housing Finance Agency, GNMA Collateral 1990 Ser G-1 (AMT)  .....    7.90     03/01/22        584,137
    1,250    Puerto Rico Housing Finance Corporation, Portfolio One GNMA-Backed Ser C     6.85     10/15/23      1,292,825
- -----------                                                                                                   -------------
    2,510                                                                                                        2,616,500
- -----------                                                                                                   -------------
             NURSING & HEALTH RELATED FACILITIES REVENUE (1.5%)
    1,000    Hillsborough County Industrial Authority, Allegany Health/John Knox
- -----------   Village of Tampa Bay Inc Ser 1992 (MBIA) ...............................    6.375    12/01/12      1,035,800
                                                                                                              -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- FLORIDA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                              COUPON    MATURITY
 THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------                                                                            --------  -----------  -------------
             PUBLIC FACILITIES REVENUE (4.3%)
   $ 1,000   Miami Sports & Exhibition Authority, Refg Ser 1992 A (FGIC)  ............    6.15%     10/01/20    $ 1,015,520
     2,000   Orlando, Cap Impr Refg Ser 1992 .........................................    6.00      10/01/22      1,971,180
- -----------                                                                                                   -------------
     3,000                                                                                                        2,986,700
- -----------                                                                                                   -------------
             RESOURCE RECOVERY REVENUE (3.1%)
     1,035   Broward County, Broward Waste Energy Co North Ser 1984 ..................    7.95      12/01/08      1,139,721
     1,000   Lee County, Solid Waste Ser 1991 A (AMT) (MBIA) .........................    6.50      10/01/13      1,031,600
- -----------                                                                                                   -------------
     2,035                                                                                                        2,171,321
- -----------                                                                                                   -------------
             TRANSPORTATION FACILITIES REVENUE (19.4%)
             Dade County
     1,000    Aviation 1992 Ser B (AMT) (MBIA) .......................................    6.60      10/01/22      1,045,460
     2,000    Seaport Refg Ser 1996 (MBIA) ...........................................    5.125     10/01/16      1,806,700
     1,000    Seaport Refg Ser 1996 (MBIA) ...........................................    5.125     10/01/26        878,350
     1,000   Florida Department of Transportation, Turnpike Ser 1991 A (AMBAC)  ......    6.25      07/01/20      1,010,750
             Greater Orlando Aviation Authority,
       750    Ser 1992 A (AMT) (FGIC) ................................................    6.50      10/01/12        776,715
     1,000    Ser 1993 A (AMT) (AMBAC) ...............................................    5.50      10/01/18        929,550
     1,250   Hillsborough County Aviation Authority, Tampa Int'l Airport
              Refg Ser 1993 B (FGIC) .................................................    5.60      10/01/19      1,190,538
     1,500   Lee County, Refg Ser 1991 (AMBAC) .......................................    6.00      10/01/17      1,501,890
     3,000   Mid-Bay Bridge Authority, Sr Lien Crossover Refg Ser 1993 A  ............    6.10      10/01/22      2,900,610
     1,500   Osceola County, Osceola Parkway (MBIA) ..................................    6.10      04/01/17      1,515,645
- -----------                                                                                                   -------------
    14,000                                                                                                       13,556,208
- -----------                                                                                                   -------------
             WATER & SEWER REVENUE (10.7%)
       500   Boynton Beach, Utility Ser 1992 (FGIC) ..................................    6.25      11/01/12        519,845
     2,000   Dade County, Water & Sewer Ser 1995 (FGIC) ..............................    5.50      10/01/25      1,873,020
     1,000   Key West, Sewer Refg Ser 1993 (FGIC) ....................................    5.70      10/01/20        964,250
     1,000   Orange County, Water Utilities Ser 1992 (AMBAC) .........................    6.25      10/01/17      1,022,230
       500   Port St Lucie, Stormwater Utility Ser 1991 (AMBAC) ......................    6.625     05/01/15        525,690
     1,000   Tampa, Water & Sewer Ser 1995 (FGIC) ....................................    5.125     10/01/17        904,310
     2,000   Puerto Rico Aqueduct & Sewer Authority, Refg Ser 1995 ...................    5.00      07/01/19      1,724,900
- -----------                                                                                                   -------------
     8,000                                                                                                        7,534,245
- -----------                                                                                                   -------------
             REFUNDED (14.0%)
     1,500   Brevard County School Board, Florida School Boards Assn Inc
              Ser 1992 A COPs (AMBAC) ................................................    6.50      07/01/02++    1,654,725
     1,000   Homestead, Hurricane Andrew Special Insurance Assessment Ser 1993 (MBIA)
              (ETM) ..................................................................    5.25      03/01/03      1,018,680
     1,900   Orlando Utilities Commission, Ser 1991 A ................................    6.50      10/01/01++    2,080,690
     1,000   South Broward Hospital District, Ser 1991 B & C (AMBAC) .................    6.611     05/01/01++    1,095,490
     2,150   St Lucie County, Sales Tax Ser 1992 (FGIC) ..............................    6.50      10/01/02++    2,378,008
     1,440   Tampa, Water & Sewer Ser 1992 A (FGIC) ..................................    6.00      10/01/02++    1,543,968
- -----------                                                                                                   -------------
     8,990                                                                                                        9,771,561
- -----------                                                                                                   -------------
    65,285   TOTAL FLORIDA TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $63,493,991) .........................    64,384,330
- -----------                                                                                                   -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- FLORIDA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                              COUPON    MATURITY
 THOUSANDS)                                                                               RATE       DATE          VALUE
- -----------                                                                            --------  -----------  -------------
             SHORT-TERM FLORIDA TAX-EXEMPT MUNICIPAL OBLIGATIONS (6.5%)
   $ 2,900   Dade County Health Facilities Authority, Miami Childrens Hospital Ser
              1990 (Demand 06/03/96) .................................................   3.80*%    09/01/20     $ 2,900,000
       700   Dade County Industrial Development Authority, Florida Power & Light Co
              Ser 1993 (Demand 06/03/96) .............................................   3.85*     06/01/21         700,000
       900   Jacksonville Health Facilities Authority, Baptist Medical Center Ser
              1993 (MBIA) (Demand 06/03/96) ..........................................   3.65*     06/01/08         900,000
- -----------                                                                                                   -------------
     4,500   TOTAL SHORT-TERM FLORIDA TAX-EXEMPT MUNICIPAL OBLIGATIONS
- -----------
              (IDENTIFIED COST $4,500,000) ..................................................................     4,500,000
                                                                                                              -------------
   $69,785   TOTAL INVESTMENTS (IDENTIFIED COST $67,993,991) (A) ...............................     98.8%       68,884,330
==========   OTHER ASSETS IN EXCESS OF LIABILITIES .............................................      1.2           859,281
                                                                                                    -----     -------------
             NET ASSETS ........................................................................    100.0%      $69,743,611
                                                                                                    =====     =============
</TABLE>

- -----------------
   AMT      Alternative Minimum Tax.
   COPs     Certificates of Participation.
   ETM      Escrowed to Maturity.
    ++      Prerefunded to call date shown.
    *       Current coupon of variable rate security.
   (a)      The aggregate cost for federal income tax purposes approximates
            identified cost. The aggregate gross unrealized appreciation was
            $2,112,416 and the aggregate gross unrealized depreciation was
            $1,222,077, resulting in net unrealized appreciation of $890,339.

Bond Insurance:
- ---------------
  AMBAC     AMBAC Indemnity Corporation.
Connie Lee  Connie Lee Insurance Company.
  FGIC      Financial Guaranty Insurance Company.
   FSA      Financial Security Assurance Inc.
  MBIA      Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements





         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- MASSACHUSETTS SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
 PRINCIPAL
AMOUNT (IN                                                                          COUPON    MATURITY
THOUSANDS)                                                                           RATE       DATE          VALUE
- -----------                                                                       --------  -----------  -------------
<S>          <C>                                                                  <C>       <C>          <C>
             MASSACHUSETTS TAX-EXEMPT MUNICIPAL BONDS (92.3%)
             GENERAL OBLIGATION (10.6%)
             Massachusetts,
   $  500     Refg 1992 Ser B ...................................................    6.50%    08/01/08     $  549,010
    1,000     Refg 1993 Ser A ...................................................    5.50     02/01/11        976,330
      150    Nantucket, 1991 ....................................................    6.80     12/01/11        163,164
- -----------                                                                                              -------------
    1,650                                                                                                   1,688,504
- -----------                                                                                              -------------
             EDUCATIONAL FACILITIES REVENUE (29.5%)
             Massachusetts Health & Educational Facilities Authority,
      100     Amherst College Ser E .............................................    6.80     11/01/21        107,650
    1,000     Boston College Ser K ..............................................    5.25     06/01/18        909,050
      400     Boston University Ser K & L (MBIA) ................................    6.66     10/01/31        417,820
      150     Community College Ser A (Connie Lee) ..............................    6.60     10/01/22        156,920
      400     Suffolk University Ser B (Connie Lee) .............................    6.25     07/01/12        408,100
      300     Suffolk University Ser C (Connie Lee) .............................    5.75     07/01/26        280,902
      500     University of Massachusetts Foundation Inc/Medical School
               Research Ser A (Connie Lee) ......................................    6.00     07/01/23        488,205
      150     Worcester Polytechnic Institute Refg Ser E ........................    6.625    09/01/17        157,905
             Massachusetts Industrial Finance Agency,
    1,000     Brooks School Ser 1993 ............................................    5.90     07/01/13        996,750
      500     Holy Cross College 1996 (MBIA) ....................................    5.50     03/01/16        475,685
      300     Mount Holyoke College Refg Ser 1992 A (MBIA) ......................    6.30     07/01/13        310,353
- -----------                                                                                              -------------
    4,800                                                                                                   4,709,340
- -----------                                                                                              -------------
             ELECTRIC REVENUE (6.4%)
      500    Massachusetts Municipal Wholesale Electric Company, Power Supply
              1992 Ser C ........................................................    6.625    07/01/18        528,270
      500    Puerto Rico Electric Power Authority, Power Ser X ..................    6.00     07/01/15        491,610
- -----------                                                                                              -------------
    1,000                                                                                                   1,019,880
- -----------                                                                                              -------------
             HOSPITAL REVENUE (14.8%)
      500    Boston, Boston City Hospital -FHA Insured Mtge Refg Ser B  .........    5.75     02/15/13        485,850
             Massachusetts Health & Educational Facilities Authority,
      100     Charlton Memorial Hospital Ser B ..................................    7.25     07/01/13        105,821
      500     Lahey Clinic Medical Center Ser B (MBIA) ..........................    5.625    07/01/15        476,110
    1,000     Massachusetts General Hospital Ser F (MBIA) .......................    6.00     07/01/15        986,540
      200     McLean Hospital Ser C (FGIC) ......................................    6.625    07/01/15        209,858
      100     New England Deaconess Hospital Ser C ..............................    7.20     04/01/22        106,375
- -----------                                                                                              -------------
    2,400                                                                                                   2,370,554
- -----------                                                                                              -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (6.0%)
    1,000    Massachusetts Industrial Finance Agency, Eastern Edison Co Refg Ser
              1993 ..............................................................    5.875    08/01/08        957,200
- -----------                                                                                              -------------
             MORTGAGE REVENUE -MULTI-FAMILY (3.2%)
      500    Massachusetts Housing Finance Agency, Rental 1994 Ser A
- -----------   (AMT) (AMBAC) .....................................................    6.60     07/01/14        513,665
                                                                                                         -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- MASSACHUSETTS SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

PRINCIPAL
AMOUNT (IN                                                                          COUPON    MATURITY
THOUSANDS)                                                                           RATE       DATE          VALUE
- -----------                                                                       --------  -----------  -------------
             MORTGAGE REVENUE -SINGLE FAMILY (4.1%)
             Massachusetts Housing Finance Agency,
   $   435    Ser 21 (AMT) ......................................................  6.30 %      06/01/25    $   432,704
       220    Ser 21 (AMT) ......................................................  7.125       06/01/25        228,195
- -----------                                                                                              -------------
       655                                                                                                     660,899
- -----------                                                                                              -------------
             STUDENT LOAN REVENUE (3.7%)
       150   Massachusetts Educational Facilities Authority, Education Loan
              Issue D Ser 1991 (AMT) (MBIA) .....................................  7.25        01/01/09        159,756
       400   New England Education Loan Marketing Corporation, 1992 Sub Issue H
              (AMT) .............................................................  6.90        11/01/09        429,384
- -----------                                                                                              -------------
       550                                                                                                     589,140
- -----------                                                                                              -------------
             TRANSPORTATION FACILITIES REVENUE (1.4%)
       250   Massachusetts Turnpike Authority, 1993 Ser A .......................  5.00        01/01/13        225,900
- -----------                                                                                              -------------
             WATER & SEWER REVENUE (11.6%)
       500   Boston Water & Sewer Commission, Sr 1992 Ser A .....................  5.75        11/01/13        497,255
       500   Massachusetts Water Pollution Abatement Trust, Pool Ser 2  .........  5.70        02/01/12        497,905
     1,000   Massachusetts Water Resources Authority, 1995 Ser B (MBIA)  ........  5.00        12/01/25        863,700
- -----------                                                                                              -------------
     2,000                                                                                                   1,858,860
- -----------                                                                                              -------------
             REFUNDED (1.0%)
       150   Massachusetts Industrial Finance Agency, Holy Cross College Ser
              1992 ..............................................................  6.45        01/01/02++      163,596
- -----------                                                                                              -------------
    14,955   TOTAL MASSACHUSETTS TAX-EXEMPT MUNICIPAL BONDS
              (IDENTIFIED COST $14,679,473) ............................................................    14,757,538
- -----------                                                                                              -------------
             SHORT-TERM MASSACHUSETTS TAX-EXEMPT MUNICIPAL OBLIGATIONS (5.6%)
       700   Massachusetts Industrial Finance Agency, New England Power Co 1992
              Ser (Demand 06/03/96) .............................................  3.65*       10/01/22        700,000
       200   Massachusetts Port Authority, Refg Ser 1995 A (Demand 06/03/96)  ...  3.60*       07/01/15        200,000
- -----------                                                                                              -------------
       900   TOTAL SHORT-TERM MASSACHUSETTS TAX-EXEMPT MUNICIPAL OBLIGATIONS
- -----------   (IDENTIFIED COST $900,000) ...............................................................       900,000
                                                                                                         -------------
   $15,855   TOTAL INVESTMENTS (IDENTIFIED COST $15,579,473) (A) ..........................     97.9%       15,657,538
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ...............................      2.1           329,396
                                                                                                -----    -------------
             NET ASSETS ...................................................................    100.0%      $15,986,934
                                                                                                         =============
</TABLE>

- ----------------
   AMT       Alternative Minimum Tax.
   ++        Prerefunded to call date shown.
    *        Current coupon of variable rate security.
   (a)       The aggregate cost for federal income tax purposes approximates
             identified cost. The aggregate gross unrealized appreciation was
             $339,982 and the aggregate gross unrealized depreciation was
             $261,917, resulting in net unrealized appreciation of $78,065.

Bond Insurance:
- ---------------
  AMBAC      AMBAC Indemnity Corporation.
Connie Lee   Connie Lee Insurance Company.
   FGIC      Financial Guaranty Insurance Company.
   MBIA      Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST--MICHIGAN SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
 AMOUNT (IN                                                                    COUPON    MATURITY
 THOUSANDS)                                                                     RATE       DATE         VALUE
- -----------                                                                   --------  -----------  -------------
<S>          <C>                                                              <C>       <C>          <C>
             MICHIGAN TAX-EXEMPT MUNICIPAL BONDS (91.6%)
             GENERAL OBLIGATION (17.0%)
   $1,000    Chelsea School District, 1995 Bldg & Site (FGIC) ...............    5.875%   05/01/25     $  980,190
    1,000    Holly Area School District, 1995 Bldg & Site (FGIC)  ...........    5.375    05/01/13        958,680
      500    Kentwood Public Schools, 1992 Bldg & Site Refg .................    6.40     05/01/15        517,515
    1,000    Mona Shores Public Schools, 1995 Bldg & Site (FGIC)  ...........    5.80     05/01/17        977,450
- -----------                                                                                          -------------
    3,500                                                                                               3,433,835
- -----------                                                                                          -------------
             EDUCATIONAL FACILITIES REVENUE (14.6%)
    1,000    Central Michigan University, Refg Ser 1993 (MBIA) ..............    5.50     10/01/10        988,210
    1,000    Michigan State University, Ser 1992 A ..........................    6.00     08/15/16        988,370
    1,000    Oakland University, Board of Trustees Ser 1995 (MBIA)  .........    5.75     05/15/26        966,740
- -----------                                                                                          -------------
    3,000                                                                                               2,943,320
- -----------                                                                                          -------------
             ELECTRIC REVENUE (9.2%)
    1,500    Michigan Public Power Agency, Belle River 1993 A ...............    5.25     01/01/18      1,341,435
      500    Wyandotte, Electric Refg 1992 (MBIA) ...........................    6.25     10/01/17        508,710
- -----------                                                                                          -------------
    2,000                                                                                               1,850,145
- -----------                                                                                          -------------
             HOSPITAL REVENUE (10.9%)
             Michigan Hospital Finance Authority,
      300     Detroit Medical Center Oblig Group Ser 1991 A .................    7.50     08/15/11        324,378
    1,000     Oakwood Hospital Oblig Group Refg Ser 1993 A (FGIC)  ..........    5.625    11/01/18        945,820
      500    Royal Oak Hospital Finance Authority, William Beaumont Hospital
              Ser 1991 D ....................................................    6.75     01/01/20        524,265
      400    University of Michigan, Ser 1990 ...............................    6.375    12/01/24        405,684
- -----------                                                                                          -------------
    2,200                                                                                               2,200,147
- -----------                                                                                          -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (2.6%)
      500    Monroe County, Detroit Edison Co Monroe & Fermi Plants
- -----------   Collateralized Ser 1-1992 (AMT) (MBIA) ........................    6.875    09/01/22        529,080
                                                                                                     -------------
             MORTGAGE REVENUE -MULTI-FAMILY (9.7%)
             Michigan Housing Development Authority,
      500     Rental Ser 1992 A .............................................    6.60     04/01/12        514,120
    1,000     1992 Ser A (FSA) ..............................................    6.50     04/01/23      1,018,540
      400     Ser 1990 A (AMT) ..............................................    7.70     04/01/23        422,936
- -----------                                                                                          -------------
    1,900                                                                                               1,955,596
- -----------                                                                                          -------------
             NURSING & HEALTH RELATED FACILITIES REVENUE (6.2%)
    1,200    University of Michigan, Medical Service Plan Ser 1991  .........    6.50     12/01/21      1,245,336
- -----------                                                                                          -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- MICHIGAN SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                     COUPON    MATURITY
 THOUSANDS)                                                                      RATE       DATE          VALUE
- -----------                                                                   --------  -----------  -------------
             PUBLIC FACILITIES REVENUE (7.5%)
   $ 1,500   Michigan Building Authority, Refg Ser I ........................    6.25%    10/01/20     $ 1,513,875
- -----------                                                                                          -------------
             TRANSPORTATION FACILITIES REVENUE (1.3%)
       250   Wayne County, Detroit Metropolitan Wayne County Airport Sub Lien
- -----------   Ser 1991 B (AMT) (MBIA) .......................................    6.75     12/01/21         260,885
                                                                                                     -------------
             WATER & SEWER REVENUE (6.7%)
             Detroit,
     1,000    Sewage Refg Ser 1993 A (FGIC) .................................    5.70     07/01/23         946,000
       400    Water Refg Ser 1992 (FGIC) ....................................    6.375    07/01/22         408,440
- -----------                                                                                          -------------
     1,400                                                                                               1,354,440
- -----------                                                                                          -------------
             REFUNDED (5.9%)
             Detroit,
       500    Sewage Ser 1991 (FGIC) ........................................    6.625    07/01/01++       548,800
       600    Water Refg Ser 1992 (FGIC) ....................................    6.375    07/01/02++       654,582
- -----------                                                                                          -------------
     1,100                                                                                               1,203,382
- -----------                                                                                          -------------
    18,550   TOTAL MICHIGAN TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $18,247,134)  ..............    18,490,041
- -----------                                                                                          -------------
             SHORT-TERM MICHIGAN TAX-EXEMPT MUNICIPAL OBLIGATIONS (6.4%)
       800   Delta County Economic Development Corporation, Mead-Esconaba
              Paper 1985 Ser E (Demand 06/03/96) ............................    3.60*    12/01/23         800,000
       500   University of Michigan, Medical Service Plan 1995 Ser A
              (Demand 06/03/96) .............................................    3.70*    12/01/27         500,000
- -----------                                                                                          -------------
     1,300   TOTAL SHORT-TERM MICHIGAN TAX-EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $1,300,000) .........................................................     1,300,000
- -----------
   $19,850   TOTAL INVESTMENTS (IDENTIFIED COST $19,547,134) (A) ......................   98.0%         19,790,041
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ...........................    2.0             405,086
                                                                                         -----       -------------
             NET ASSETS ...............................................................  100.0%        $20,195,127
</TABLE>

- --------------
   AMT     Alternative Minimum Tax.
   ++      Prerefunded to call date shown.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $487,632 and the aggregate gross unrealized depreciation was
           $244,725, resulting in net unrealized appreciation of $242,907.

Bond Insurance:
- ---------------
   FGIC    Financial Guaranty Insurance Company.
   FSA     Financial Security Assurance Inc.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- MINNESOTA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
 AMOUNT (IN                                                                   COUPON    MATURITY
 THOUSANDS)                                                                    RATE       DATE         VALUE
- -----------  --------------------------------------------------------------  --------  -----------  -------------
<S>          <C>                                                            <C>        <C>          <C>
             MINNESOTA TAX-EXEMPT MUNICIPAL BONDS (90.7%)
             GENERAL OBLIGATION (4.0%)
             Minneapolis,
   $  100     Sales Tax Refg Ser 1992 ......................................    6.25%    04/01/12     $  104,196
      300     Dtd 08/15/92 .................................................    5.90     12/01/13        301,638
- -----------                                                                                         -------------
      400                                                                                                405,834
- -----------                                                                                         -------------
             EDUCATIONAL FACILITIES REVENUE (16.1%)
             Minnesota Higher Education Facilities Authority,
      200     Hamline University Ser Three-K ...............................    6.60     06/01/09        208,318
      200     Northfield St Olaf College 1992 ..............................    6.40     10/01/21        207,286
    1,000     University of Minnesota Ser 1993 A ...........................    4.80     08/15/03        992,730
      250     University of St Thomas Refg Ser Three-R2 ....................    5.60     09/01/14        239,775
- -----------                                                                                         -------------
    1,650                                                                                              1,648,109
- -----------                                                                                         -------------
             ELECTRIC REVENUE (4.4%)
      500    Southern Minnesota Municipal Power Agency, Ser 1993 B  ........    5.00     01/01/13        450,825
- -----------                                                                                         -------------
             HOSPITAL REVENUE (21.0%)
      500    Breckenridge, Catholic Health Corp Ser 1993 ...................    5.25     11/15/13        462,810
      500    Robbinsdale, North Memorial Medical Center Ser 1993 A (AMBAC)      5.45     05/15/13        480,320
             Rochester,
      250     Mayo Foundation/Mayo Medical Center Ser 1992 I ...............    5.75     11/15/21        239,688
      200     Mayo Foundation/Mayo Medical Center Ser 1992 F ...............    6.25     11/15/21        202,478
             Saint Paul Housing & Redevelopment Authority,
      300     Health East Refg Ser 1993-A ..................................    6.625    11/01/17        293,769
      500     St Paul-Ramsey Medical Center Ser 1993 (AMBAC) ...............    5.55     05/15/23        468,205
- -----------                                                                                         -------------
    2,250                                                                                              2,147,270
- -----------                                                                                         -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (12.1%)
      500    Anoka County, United Power Assoc Ser 1987 A NRU-CFC Gtd (AMT)      6.95     12/01/08        529,655
      500    Bass Brook, Minnesota Power & Light Co Refg Ser 1992  .........    6.00     07/01/22        476,585
             Minneapolis Community Development Agency,
      100     Ltd Tax Supported Common Bond Fund Ser 1991-3 ................    8.25     12/01/11        114,384
      100     Ltd Tax Supported Common Bond Fund Ser 1991-1 (AMT)  .........    8.00     12/01/16        112,299
- -----------                                                                                         -------------
    1,200                                                                                              1,232,923
- -----------                                                                                         -------------
             MORTGAGE REVENUE -MULTI-FAMILY (4.9%)
      300    Burnsville, Summit Park Apts -FHA Insured Refg Ser 1993  ......    6.00     07/01/33        290,466
      200    Minneapolis Housing Finance Agency, Ser 1992 A ................    6.95     08/01/17        209,268
- -----------                                                                                         -------------
      500                                                                                                499,734
- -----------                                                                                         -------------
             MORTGAGE REVENUE -SINGLE FAMILY (9.3%)
      170    Minneapolis-Saint Paul Housing Finance Board, GNMA-Backed
              Phase IX Ser 1991 (AMT) ......................................    7.25     08/01/21        176,521
             Minnesota Housing Finance Agency,
      100     Ser 1990 D (AMT) .............................................    8.00     01/01/23        104,872
      455     Ser 1992 C-1 (AMT) ...........................................    6.75     07/01/23        464,455
      200     Ser 1992 H (AMT) .............................................    6.50     01/01/26        202,342
- -----------                                                                                         -------------
      925                                                                                                948,190
- -----------                                                                                         -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- MINNESOTA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                   COUPON    MATURITY
 THOUSANDS)                                                                    RATE       DATE         VALUE
- -----------  --------------------------------------------------------------  --------  -----------  -------------
             NURSING & HEALTH RELATED FACILITIES REVENUE (5.2%)
   $  500    Minneapolis & Saint Paul Housing & Redevelopment Authority,
- -----------
              Group Health Plan Inc Ser 1992 ...............................    6.75%     12/01/13    $   532,210
                                                                                                    -------------

             PUBLIC FACILITIES REVENUE (6.5%)
      300    Hennepin County, Ser 1991 COPs ................................    6.80      05/15/17        321,654
             Saint Paul Independent School District #625,
      175     Ser 1995 COPs ................................................    5.45      02/01/11        171,731
      175     Ser 1995 COPs ................................................    5.50      02/01/12        171,745
- -----------                                                                                         -------------
      650                                                                                                 665,130
- -----------                                                                                         -------------
             WATER & SEWER REVENUE (1.1%)
      100    Minnesota Public Facilities Authority, Water Pollution Control
              Ser 1991 A ...................................................    6.95      03/01/13        110,856
- -----------                                                                                         -------------

             REFUNDED (6.1%)
      100    Dakota & Washington Counties Housing & Redevelopment
             Authority, GNMA-Backed Ser 1988 (AMT) (ETM) ...................    8.375     09/01/21        126,796
      100    Minnesota Public Facilities Authority, Water Pollution Control
              Ser 1992 A ...................................................    6.50      03/01/01++      105,778
      400    Saint Paul Housing & Redevelopment Authority, Civic Center
              Ser 1993 (ETM) ...............................................    5.45      11/01/13        388,940
- -----------                                                                                         -------------
      600                                                                                                 621,514
- -----------                                                                                         -------------
    9,275    TOTAL MINNESOTA TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $9,179,399)  .............     9,262,595
- -----------
             SHORT-TERM MINNESOTA TAX-EXEMPT MUNICIPAL OBLIGATIONS (6.8%)
      500    Beltrami County, Northwood Panelboard Co Ser 1991 (Demand
              06/03/96) ....................................................    3.60*     12/01/21        500,000
      200    Minneapolis & St Paul Housing & Redevelopment Authority,
              Children's Health Care Ser 1995 B (Demand 06/03/96)  .........    3.75*     08/15/25        200,000
- -----------                                                                                         -------------
      700    TOTAL SHORT-TERM MINNESOTA EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $700,000) ..........................................................       700,000
- -----------                                                                                         -------------
   $9,975    TOTAL INVESTMENTS (IDENTIFIED COST $9,879,399) (A) ......................     97.5%        9,962,595
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ..........................      2.5           254,870
                                                                                          -----     -------------
             NET ASSETS ..............................................................    100.0%      $10,217,465
                                                                                          =====     =============
</TABLE>

- ---------------
   AMT     Alternative Minimum Tax.
   COPs    Certificates of Participation.
   ETM     Escrowed to Maturity.
    ++     Prerefunded to call date shown.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $236,255 and the aggregate gross unrealized depreciation was
           $153,059, resulting in net unrealized appreciation of $83,196.

Bond Insurance:
- ---------------
   AMBAC   AMBAC Indemnity Corporation.

                        See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- NEW JERSEY SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
AMOUNT (IN                                                                          COUPON    MATURITY
THOUSANDS)                                                                           RATE       DATE         VALUE
- -----------                                                                       --------  -----------  -------------
<S>          <C>                                                                  <C>       <C>          <C>
             NEW JERSEY TAX-EXEMPT MUNICIPAL BONDS (90.1%)
             General Obligation (5.1%)
   $2,000    Guam, 1993 Ser A ...................................................    5.375%   11/15/13     $1,761,420
      500    Essex County, Ser 1991 (FSA) .......................................    6.50     12/01/11        523,535
- -----------                                                                                              -------------
    2,500                                                                                                   2,284,955
- -----------                                                                                              -------------
             EDUCATIONAL FACILITIES REVENUE (6.7%)
             New Jersey Economic Development Authority,
    2,000     Educational Testing Service Ser 1995 A (MBIA) .....................    5.90     05/15/15      1,973,020
      500     The Seeing Eye Inc 1991 ...........................................    7.30     04/01/11        510,005
      500    Rutgers, The State University Refg Ser R ...........................    6.50     05/01/13        525,495
- -----------                                                                                              -------------
    3,000                                                                                                   3,008,520
- -----------                                                                                              -------------
             Electric Revenue (3.9%)
    2,000    Puerto Rico Electric Power Authority, Power Ser O ..................    5.00     07/01/12      1,768,960
- -----------                                                                                              -------------
             HOSPITAL REVENUE (12.1%)
             New Jersey Health Care Facilities Financing Authority,
    1,000    Allegany Health System Ser 1993 (MBIA) .............................    5.125    07/01/13        917,340
    1,000     Atlantic City Medical Center Ser C ................................    6.80     07/01/11      1,055,160
      500     Cathedral Health Services Inc -FHA Insured Mtges Ser A  ...........    7.25     02/15/21        517,860
    1,000     Columbus Hospital Ser A ...........................................    7.50     07/01/08      1,014,670
      460     Pascack Valley Hospital Assn Ser 1991 .............................    6.90     07/01/21        466,896
      500     Robert Wood Johnson University Hospital Ser B (MBIA)  .............    6.625    07/01/16        526,020
    1,000     Somerset Medical Center Ser A (FGIC) ..............................    5.10     07/01/14        909,660
- -----------                                                                                              -------------
    5,460                                                                                                   5,407,606
- -----------                                                                                              -------------
             Industrial Development/Pollution Control Revenue (11.9%)
      500    Middlesex County Pollution Control Financing Authority, Amerada Hess
              Corp Refg Ser 1992 ................................................    6.875    12/01/22        513,080
             New Jersey Economic Development Authority,
      500     American Airlines Inc Ser 1991 (AMT) ..............................    7.10     11/01/31        523,225
    1,000     BP Oil Inc Ser 1982 ...............................................    6.55     10/01/12      1,028,200
    1,000     Elizabethtown Water Co 1995 Ser (AMT) (MBIA) ......................    5.60     12/01/25        931,060
      500     Hackensack Water Co Ser C (AMT) ...................................    7.00     10/01/17        512,270
      300     Jersey Central Power & Light Co 1985 Ser ..........................    7.10     07/01/15        308,154
    1,500    Salem County Pollution Control Financing Authority,
              E I du Pont de Nemours & Co 1992 Ser A (AMT) ......................    6.125    07/15/22      1,491,165
- -----------                                                                                              -------------
    5,300                                                                                                   5,307,154
- -----------                                                                                              -------------
             MORTGAGE REVENUE -MULTI-FAMILY (8.0%)
             New Jersey Housing & Mortgage Finance Agency,
    2,000     1995 Ser A (AMBAC) ................................................    6.00     11/01/14      1,999,880
    1,000     Presidential Plaza at Newport -FHA Insured Mtges Refg 1991 Ser 1  .    7.00     05/01/30      1,037,900
      500     Rental 1991 Ser A (AMT) ...........................................    7.25     11/01/22        521,150
- -----------                                                                                              -------------
    3,500                                                                                                   3,558,930
- -----------                                                                                              -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- NEW JERSEY SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

PRINCIPAL
AMOUNT (IN                                                                          COUPON    MATURITY
THOUSANDS)                                                                           RATE       DATE         VALUE
- -----------                                                                       --------  -----------  -------------
             Nursing & Health Related Facilities Revenue (2.2%)
   $   965   New Jersey Health Care Facilities Financing Authority,
- -----------   Spectrum For Living -FHA Insured Mortgage Refg Ser B  .............    6.50%     02/01/22    $   971,504
                                                                                                         -------------
             PUBLIC FACILITIES REVENUE (6.4%)
     1,000   Atlantic County Utilities Authority, Solid Waste Ser 1992  .........    7.125     03/01/16        975,570
     2,000   New Jersey Sports & Exposition Authority, State Contract 1993 Ser A     5.50      09/01/23      1,868,940
- -----------                                                                                              -------------
     3,000                                                                                                   2,844,510
- -----------                                                                                              -------------
             Resource Recovery Revenue (6.7%)
     1,000   Mercer County Improvement Authority, Refg Ser A 1992 (AMT) (FGIC)  .    6.70      04/01/13      1,015,680
     1,000   Union County Utilities Authority, 1991 Ser A (AMT) .................    7.20      06/15/14      1,017,060
       900   Warren County Pollution Control Financing Authority, Warren Energy
              Resource Co Ltd Partnership Ser 1984 (MBIA) .......................    6.60      12/01/07        974,375
- -----------                                                                                              -------------
     2,900                                                                                                   3,007,115
- -----------                                                                                              -------------
             Transportation Facilities Revenue (17.0%)
     2,000   Delaware River Port Authority, New Jersey & Pennsylvania, Ser 1995
              (FGIC) ............................................................    5.50      01/01/26      1,875,320
     1,500   New Jersey Highway Authority, Sr Parkway Refg 1992 Ser  ............    6.25      01/01/14      1,547,340
     1,000   New Jersey Turnpike Authority, Ser C ...............................    5.75      01/01/11        964,580
     1,500   Port Authority of New York & New Jersey, Cons 99th Ser (AMT) (FGIC)     5.75      05/01/15      1,446,345
     2,000   Puerto Rico Highway & Transportation Authority, Refg Ser X  ........    5.25      07/01/21      1,762,000
- -----------                                                                                              -------------
     8,000                                                                                                   7,595,585
- -----------                                                                                              -------------
             Water & Sewer Revenue (8.9%)
     1,000   Atlantic City Municipal Utilities Authority, Refg Ser 1993  ........    5.75      05/01/17        952,090
     1,000   Northwest Bergen County Utilities Authority, Refg 1992 Ser (MBIA)  .    6.00      07/15/13      1,021,030
     2,000   Passaic Valley Sewerage Commissioners, Ser 1992 D (AMBAC)  .........    5.75      12/01/13      2,001,340
- -----------                                                                                              -------------
     4,000                                                                                                   3,974,460
- -----------                                                                                              -------------
             Refunded (1.2%)
       500   University of Medicine & Dentistry of New Jersey, Refg Ser D  ......    6.50      12/01/01++      548,365
- -----------                                                                                              -------------
    41,125   TOTAL NEW JERSEY TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $40,164,807)  ................    40,277,664
- -----------                                                                                              -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- NEW JERSEY SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

PRINCIPAL
AMOUNT (IN                                                                         COUPON    MATURITY
THOUSANDS)                                                                          RATE       DATE          VALUE
- -----------                                                                       --------  -----------  -------------
             SHORT-TERM NEW JERSEY TAX-EXEMPT MUNICIPAL OBLIGATIONS (7.8%)
             New Jersey Economic Development Authority,
   $   700   New Jersey Natural Gas Co Ser 1995 A (AMT) (AMBAC)
              (Demand 06/03/96) .................................................   3.40*%    08/01/30     $   700,000
       800    Toys "R" Us Inc (Demand 06/03/96) .................................   3.00*     04/01/19         800,000
     2,000   Union County Industrial Pollution Control Financing Authority,
             Exxon Corp Ser 1994 (Demand 06/03/96) ..............................   2.85*     07/01/33       2,000,000
- -----------                                                                                              -------------
     3,500   TOTAL SHORT-TERM NEW JERSEY TAX-EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $3,500,000) .............................................................     3,500,000
- -----------                                                                                              -------------
   $44,625   TOTAL INVESTMENTS (IDENTIFIED COST $43,664,807) (A) ..........................     97.9%       43,777,664
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ...............................      2.1           956,902
                                                                                               -----     -------------
             NET ASSETS ...................................................................    100.0%      $44,734,566
                                                                                               =====     =============
</TABLE>

- ----------------
   AMT     Alternative Minimum Tax.
   ++      Prerefunded to call date shown.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $907,501 and the aggregate gross unrealized depreciation was
           $794,644, resulting in net unrealized appreciation of $112,857.

Bond Insurance:
- ---------------
   AMBAC   AMBAC Indemnity Corporation.
   FGIC    Financial Guaranty Insurance Company.
    FSA    Financial Security Assurance Inc.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- NEW YORK SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
 AMOUNT (IN                                                                            COUPON    MATURITY
 THOUSANDS)                                                                             RATE       DATE         VALUE
- -----------  -----------------------------------------------------------------------  --------  ----------  -------------
<S>          <C>                                                                     <C>        <C>         <C>
             NEW YORK TAX-EXEMPT MUNICIPAL BONDS (91.5%)
             GENERAL OBLIGATION (9.8%)
   $  500    New York City, 1995 Ser D (MBIA) .......................................    6.20%    02/01/07    $  535,840
      500    New York State, Refg Ser 1995 B ........................................    5.70     08/15/13       491,885
      300    Puerto Rico, Pub Impr Refg Ser 1992 A ..................................    6.00     07/01/14       298,020
- -----------                                                                                                 -------------
    1,300                                                                                                      1,325,745
- -----------                                                                                                 -------------
             EDUCATIONAL FACILITIES REVENUE (19.4%)
      500    Hempstead Industrial Development Agency, Hofstra University
              Ser 1996 (MBIA) .......................................................    5.80     07/01/15       491,485
             New York State Dormitory Authority,
      400     Manhattan College Ser 1992 ............................................    6.50     07/01/19       408,784
    1,000     State University Ser 1993 A ...........................................    5.25     05/15/15       885,740
      345     University of Rochester Ser 1987 ......................................    6.50     07/01/09       356,616
      500     University of Rochester Ser 1993 A ....................................    5.625    07/01/12       485,965
- -----------                                                                                                 -------------
    2,745                                                                                                      2,628,590
- -----------                                                                                                 -------------
             ELECTRIC REVENUE (6.3%)
      500    New York State Power Authority, Gen Purpose Ser CC .....................    5.25     01/01/18       453,800
      400    Puerto Rico Electric Power Authority, Power Ser X ......................    6.00     07/01/15       393,288
- -----------                                                                                                 -------------
      900                                                                                                        847,088
- -----------                                                                                                 -------------
             HOSPITAL REVENUE (5.4%)
             New York State Medical Care Facilities Finance Agency,
      500     Hospital - FHA Insured Mtge 1994 Ser A (AMBAC) ........................    6.50     08/15/29       521,205
      200     Insured Hospital & Nursing Home -FHA Insured Mtge 1992 Ser A  .........    6.70     08/15/23       206,332
- -----------                                                                                                 -------------
      700                                                                                                        727,537
- -----------                                                                                                 -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (13.4%)
             New York State Energy Research & Development Authority,
    1,000     Brooklyn Union Gas Co 1991 Ser A & B (AMT) ............................    6.952    07/01/26     1,062,230
      500     New York State Electric & Gas Corp 1987 Ser A (AMT) (MBIA)  ...........    6.15     07/01/26       494,560
      250     Rochester Gas & Electric Corp Ser 1992 B (AMT) (MBIA) .................    6.50     05/15/32       257,013
- -----------                                                                                                 -------------
    1,750                                                                                                      1,813,803
- -----------                                                                                                 -------------
             MORTGAGE REVENUE -SINGLE FAMILY (4.6%)
             New York State Mortgage Agency,
      500     Home Owners Ser 27 ....................................................    6.90     04/01/15       525,830
       95     Home Owners Ser UU (AMT) ..............................................    7.75     10/01/23        99,749
- -----------                                                                                                 -------------
      595                                                                                                        625,579
- -----------                                                                                                 -------------
             RESOURCE RECOVERY REVENUE (3.8%)
      500    Oneida-Herkimer Solid Waste Management Authority, Ser 1992  ............    6.65     04/01/05       518,165
- -----------                                                                                                 -------------
             TAX ALLOCATION (3.2%)
      500    Grand Central District Management Association Inc, Cap Impr
             Refg Ser 1994 ..........................................................    5.25     01/01/22       435,395
- -----------                                                                                                 -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- NEW YORK SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                            COUPON    MATURITY
 THOUSANDS)                                                                             RATE       DATE         VALUE
- -----------  -----------------------------------------------------------------------  --------  ----------  -------------
             TRANSPORTATION FACILITIES REVENUE (14.4%)
   $   550   Buffalo & Fort Erie Public Bridge Authority, Toll Bridge Ser 1995
              (MBIA) ................................................................    5.75%    01/01/25    $   530,552
       500   New York State Thruway Authority, Ser C (FGIC) .........................    6.00     01/01/25        491,915
       500   Port Authority of New York & New Jersey, Cons 99th Ser (AMT) (FGIC)  ...    5.75     05/01/15        482,115
       500   Triborough Bridge & Tunnel Authority, Gen Purpose Ser 1993 B  ..........    5.00     01/01/20        439,595
- -----------                                                                                                 -------------
     2,050                                                                                                      1,944,177
- -----------                                                                                                 -------------
             WATER & SEWER REVENUE (3.6%)
       500   New York City Municipal Water Finance Authority, 1993 Ser A  ...........    6.00     06/15/17        487,745
- -----------                                                                                                 -------------
             OTHER REVENUE (7.6%)
       500   New York Local Government Assistance Corporation, Ser 1991 C  ..........    7.00     04/01/10        546,010
       500   United Nations Development Corporation, Sr Lien 1992 Refg Ser A  .......    6.00     07/01/26        483,110
- -----------                                                                                                 -------------
     1,000                                                                                                      1,029,120
- -----------                                                                                                 -------------
    12,540   TOTAL NEW YORK TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $12,280,155) ......................    12,382,944
- -----------                                                                                                 -------------
             SHORT-TERM NEW YORK TAX-EXEMPT MUNICIPAL OBLIGATIONS (6.6%)
       400   New York State Dormitory Authority, Oxford University Press Inc
              (Demand 06/03/96) .....................................................    3.55*    07/01/23        400,000
       500   Port Authority of New York & New Jersey, Ser 2 (Demand 06/03/96)  ......    3.60*    05/01/19        500,000
- -----------                                                                                                 -------------
       900   TOTAL SHORT-TERM NEW YORK TAX-EXEMPT MUNICIPAL OBLIGATIONS
              (IDENTIFIED COST $900,000) ..................................................................       900,000
- -----------                                                                                                 -------------
   $13,440   TOTAL INVESTMENTS (IDENTIFIED COST $13,180,155) (A) ..............................     98.1%      13,282,944
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES ...................................      1.9          255,077
                                                                                                   -----    -------------
             NET ASSETS .......................................................................    100.0%     $13,538,021
                                                                                                   =====    =============
</TABLE>

- --------------
   AMT     Alternative Minimum Tax.
    *      Current coupon of variable rate security.
   (a)     The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $301,438 and the aggregate gross unrealized depreciation was
           $198,649, resulting in net unrealized appreciation of $102,789.

Bond Insurance:
- ---------------
   AMBAC   AMBAC Indemnity Corporation.
   FGIC    Financial Guaranty Insurance Company.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- OHIO SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>

 PRINCIPAL
 AMOUNT (IN                                                                      COUPON    MATURITY
 THOUSANDS)                                                                       RATE       DATE         VALUE
- -----------                                                                     --------  ----------  -------------
<S>          <C>                                                                <C>       <C>         <C>
             OHIO TAX-EXEMPT MUNICIPAL BONDS (92.8%)
             GENERAL OBLIGATION (8.5%)
   $  300    Bedford School District, Ser 1993 ................................    6.25%    12/01/13    $  304,140
    1,000    Delaware City School District, Construction & Impr (FGIC)  .......    5.75     12/01/20       976,900
      180    Euclid, Ser 1991 .................................................    6.625    12/01/11       191,513
      250    Hilliard City School District, Impr Refg Ser 1992 (FGIC)  ........    6.55     12/01/05       275,247
      100    South Euclid, Unltd Tax Recreational .............................    7.00     12/01/11       107,976
- -----------                                                                                           -------------
    1,830                                                                                                1,855,776
- -----------                                                                                           -------------
             EDUCATIONAL FACILITIES REVENUE (17.7%)
             Ohio Higher Educational Facility Commission,
      500     Case Western Reserve University Ser 1992 ........................    6.00     10/01/22       492,795
    1,000     John Carroll University Refg ....................................    5.30     11/15/14       933,050
    1,000     Oberlin College Ser 1993 ........................................    5.375    10/01/15       945,350
      500    University of Cincinnati, General Receipts Ser G .................    7.00     06/01/11       543,460
    1,000    University of Toledo, Ser 1992 A (FGIC) ..........................    5.90     06/01/20       981,140
- -----------                                                                                           -------------
    4,000                                                                                                3,895,795
- -----------                                                                                           -------------
             ELECTRIC REVENUE (2.4%)
      500    Hamilton!, Refg 1992 Ser A (FGIC) ................................    6.00     10/15/12       511,505
- -----------                                                                                           -------------
             HOSPITAL REVENUE (21.5%)
    1,000    Akron Bath & Copley Joint Township Hospital District, Summa Health
              Ser 1992 A ......................................................    6.25     11/15/07     1,018,340
    1,000    Clermont County, Mercy Health Ser 1991 ...........................    6.733    10/05/21     1,060,130
      670    Cuyahoga County, Meridia Health Ser 1990 .........................    7.25     08/15/19       718,066
             Hamilton County,
      475     Bethesda Hospital Inc Ser 1986 A ................................    7.00     01/01/09       488,291
      500     Franciscan Sisters of the Poor/Providence Hospital Ser 1992  ....    6.875    07/01/15       504,425
    1,000    Muskingum County, Bethesda Care System Refg & Impr Ser 1996
              (Connie Lee) ....................................................    5.40     12/01/16       936,470
- -----------                                                                                           -------------
    4,645                                                                                                4,725,722
- -----------                                                                                           -------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (4.2%)
      400    Ashtabula County, Ashland Oil Inc Refg 1992 Ser A ................    6.90     05/01/10       415,712
      500    Ohio Water Development Authority, Dayton Power & Light Co
              Collateralized Refg 1992 Ser A ..................................    6.40     08/15/27       513,730
- -----------                                                                                           -------------
      900                                                                                                  929,442
- -----------                                                                                           -------------
             MORTGAGE REVENUE -SINGLE FAMILY (3.7%)
      800    Ohio Housing Finance Agency, GNMA-Backed 1990 Ser A-1 & 2 (AMT) ..    6.903    03/01/31       818,736
- -----------                                                                                           -------------
             PUBLIC FACILITIES REVENUE (4.3%)
    1,000    Ohio Building Authority, Adult Correctional Building 1996 Ser A  .    5.50     04/01/16       952,390
- -----------                                                                                           -------------
             TRANSPORTATION FACILITIES REVENUE (4.4%)
    1,000    Ohio Turnpike Commission, 1994 Ser A .............................    5.75     02/15/24       959,820
- -----------                                                                                           -------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- OHIO SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                      COUPON    MATURITY
 THOUSANDS)                                                                       RATE       DATE         VALUE
- -----------                                                                     --------  ----------  -------------
             WATER & SEWER REVENUE (26.1%)
   $ 1,000   Clermont County, Sewer Refg Ser 1993 (AMBAC) .....................    5.20%    12/01/21    $   903,420
     1,000   Cleveland, Water Works Impr & Refg Ser H 1996 (MBIA)  ............    5.75     01/01/16        979,250
     1,000   Montgomery County, Water Ser 1992 (FGIC) .........................    6.25     11/15/17      1,023,670
     1,000   Northeast Ohio Regional Sewer District, Wastewater Impr Refg
              Ser 1995 (AMBAC) ................................................    5.60     11/15/13        978,200
     1,000   Ohio Water Development Authority, Water Pollution Ser 1995 (MBIA)     5.60     06/01/10        995,210
     1,000   Puerto Rico Aqueduct & Sewer Authority, Refg Ser 1995  ...........    5.00     07/01/19        862,450
- -----------                                                                                           -------------
     6,000                                                                                                5,742,200
- -----------                                                                                           -------------
    20,675   TOTAL OHIO TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $20,356,433) ....................    20,391,386
- -----------                                                                                           -------------
             SHORT-TERM OHIO TAX-EXEMPT MUNICIPAL OBLIGATION (5.0%)
     1,100   Ohio Air Quality Development Authority, Mead Corp 1986 Ser A
              (Demand 06/03/96) (Identified Cost $1,100,000) ..................    3.60*    10/01/01      1,100,000
- -----------                                                                                           -------------
   $21,775   TOTAL INVESTMENTS (IDENTIFIED COST $21,456,433) (A) ........................     97.8%      21,491,386
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES .............................      2.2          487,025
                                                                                             -----    -------------
             NET ASSETS .................................................................    100.0%     $21,978,411
                                                                                             =====    =============
</TABLE>

- ------------------
    AMT     Alternative Minimum Tax.
     *      Current coupon of variable rate security.
    (a)     The aggregate cost for federal income tax purposes approximates
            identified cost. The aggregate gross unrealized appreciation was
            $368,603 and the aggregate gross unrealized depreciation was
            $333,650, resulting in net unrealized appreciation of $34,953.

Bond Insurance:
- ---------------
  AMBAC     AMBAC Indemnity Corporation.
Connie Lee  Connie Lee Insurance Company.
   FGIC     Financial Guaranty Insurance Company.
   MBIA     Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- PENNSYLVANIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT (IN                                                                       COUPON    MATURITY
 THOUSANDS)                                                                        RATE       DATE        VALUE
- -----------                                                                      --------  ----------  ------------
<S>          <C>                                                                 <C>       <C>         <C>
             PENNSYLVANIA TAX-EXEMPT MUNICIPAL BONDS (91.2%)
             GENERAL OBLIGATION (5.3%)
   $ 2,000   Berks County, Second Ser 1992 (FGIC) ..............................    5.75%    11/15/12   $ 1,997,820
       600   Puerto Rico, Pub Impr Refg Ser 1992 A .............................    6.00     07/01/14       596,040
- -----------                                                                                            ------------
     2,600                                                                                                2,593,860
- -----------                                                                                            ------------
             EDUCATIONAL FACILITIES REVENUE (21.7%)
     2,000   Delaware County Authority, Villanova University Ser 1995 (AMBAC)  .    5.80     08/01/25     1,942,360
     1,000   Northeastern Pennsylvania Hospital & Education Authority, Kings
             College Ser B 1993 ................................................    6.00     07/15/11       939,420
             Pennsylvania Higher Educational Facilities Authority,
       750    Allegheny College Impr & Refg Ser 1993 B .........................    6.00     11/01/22       693,067
       500    Medical College of Pennsylvania 1991 Ser A .......................    7.25     03/01/11       520,710
       500    Temple University First Ser 1991 (MBIA) ..........................    6.50     04/01/21       518,040
     1,000    Thomas Jefferson University 1992 Ser A ...........................    6.625    08/15/09     1,073,190
             Pennsylvania State University,
     1,000    Second Refg Ser 1992 .............................................    5.50     08/15/16       954,180
     1,000    Ser B 1992 .......................................................    5.50     08/15/16       954,180
     1,000   Swarthmore Borough Authority, Swarthmore College Ser 1992  ........    6.00     09/15/20       970,070
     2,000   University of Pittsburgh, Cap 1992 Ser A (MBIA) ...................    6.125    06/01/21     2,016,960
- -----------                                                                                            ------------
    10,750                                                                                               10,582,177
- -----------                                                                                            ------------
             HOSPITAL REVENUE (15.5%)
             Allegheny County Hospital Development Authority,
     1,000    Ohio Valley General Hospital Refg Ser 1993 .......................    5.875    04/01/11       933,760
     1,000    Presbyterian University Health System Inc Ser 1992 B (MBIA)  .....    6.00     11/01/12     1,009,800
     1,000   Berks County Municipal Authority, Reading Hospital & Medical
              Center Ser of 1993 (MBIA) ........................................    5.50     10/01/08     1,004,370
             Philadelphia Hospitals & Higher Educational Facilities Authority,
     1,750    Chestnut Hill Hospital Ser of 1992 ...............................    6.375    11/15/11     1,752,765
     1,000    Temple University Hospital 1993 Ser A ............................    6.50     11/15/08     1,022,240
     2,000    The Children's Hospital of Philadelphia Ser A of 1993  ...........    5.375    02/15/14     1,852,300
- -----------                                                                                            ------------
     7,750                                                                                                7,575,235
- -----------                                                                                            ------------
             INDUSTRIAL DEVELOPMENT/POLLUTION CONTROL REVENUE (2.2%)
     1,000   Montgomery County Industrial Development Authority, Philadelphia
- -----------   Electric Co Refg 1991 Ser B (MBIA) ...............................    6.70     12/01/21     1,064,100
                                                                                                       ------------
             MORTGAGE REVENUE - MULTI-FAMILY (2.1%)
             Pennsylvania Housing Finance Agency,
        75    Moderate Rehab Sec 8 Assisted Issue B ............................    9.00     08/01/01        76,394
     1,000    Ser 1992-35 D (AMT) ..............................................    6.20     04/01/25       969,890
- -----------                                                                                            ------------
     1,075                                                                                                1,046,284
- -----------                                                                                            ------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- PENNSYLVANIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                           COUPON    MATURITY
 THOUSANDS)                                                                            RATE       DATE         VALUE
- -----------                                                                          --------  -----------  ------------
             MORTGAGE REVENUE - SINGLE FAMILY (9.4%)
             Pennsylvania Housing Finance Agency,
$2,000        Ser 1993-37 A ........................................................    5.45%     10/01/17   $ 1,854,840
 2,000        Ser 1991-31 C (AMT) ..................................................    7.00      10/01/23     2,057,280
   655       Puerto Rico Housing Finance Corporation, Portfolio One GNMA-Backed
              Ser C ................................................................    6.85      10/15/23       677,440
- -----------                                                                                                 ------------
 4,655                                                                                                         4,589,560
- -----------                                                                                                 ------------
             PUBLIC FACILITIES REVENUE (3.9%)
 2,000       Puerto Rico Public Buildings Authority, Ser A (AMBAC) .................    5.50      07/01/21     1,905,880
- -----------                                                                                                 ------------
             RESOURCE RECOVERY REVENUE (2.8%)
   300       Cambria County Industrial Development Authority, Cambria Cogen Co Ser
              1989 F-1 (AMT) .......................................................    7.75      09/01/19       314,439
 1,000       Montgomery County Industrial Development Authority, Ser 1989  .........    7.50      01/01/12     1,058,710
- -----------                                                                                                 ------------
 1,300                                                                                                         1,373,149
- -----------                                                                                                 ------------
             STUDENT LOAN REVENUE (4.2%)
             Pennsylvania Higher Education Assistance Agency,
 1,000        1988 Ser D (AMT) (AMBAC) .............................................    6.05      01/01/19       984,220
 1,000        1991 Ser B (AMT) (AMBAC) .............................................    6.854     09/01/26     1,048,310
- -----------                                                                                                 ------------
 2,000                                                                                                         2,032,530
- -----------                                                                                                 ------------
             TRANSPORTATION FACILITIES REVENUE (13.2%)
 1,000       Guam, Highway 1992 Ser A (FSA) ........................................    6.30      05/01/12     1,035,170
   500       Allegheny County, Greater Pittsburgh Int'l Airport Ser 1992 (AMT) (FSA)    6.625     01/01/22       516,020
 2,000       Delaware River Port Authority, Ser 1995 (FGIC) ........................    5.50      01/01/26     1,875,320
 2,000       Pennsylvania Turnpike Commission, Ser O of 1992 (FGIC) ................    6.00      12/01/12     2,037,280
 1,000       Pittsburgh Public Parking Authority, Ser 1992 A (FGIC) ................    5.875     12/01/12     1,008,310
- -----------                                                                                                 ------------
 6,500                                                                                                         6,472,100
- -----------                                                                                                 ------------
             WATER & SEWER REVENUE (4.4%)
 2,000       Philadelphia, Water & Wastewater Ser 1995 (MBIA) ......................    6.25      08/01/11     2,125,180
- -----------                                                                                                 ------------
             OTHER REVENUE (3.2%)
 1,500       Pennsylvania Finance Authority, Cap Impr Refg Ser 1993 ................    6.60      11/01/09     1,581,585
- -----------                                                                                                 ------------
             Refunded (3.3%)
   500       Lehigh County Industrial Development Authority, Strawbridge & Clothier
              Refg Ser of 1991 (ETM) ...............................................    7.20      12/15/01       534,715
 1,000       Reading, Ser of 1992 (AMBAC) ..........................................    6.50      11/15/02++   1,089,340
- -----------                                                                                                 ------------
 1,500                                                                                                         1,624,055
- -----------                                                                                                 ------------

44,630       TOTAL PENNSYLVANIA TAX-EXEMPT MUNICIPAL BONDS (IDENTIFIED COST $44,070,762)  .................   44,565,695
- -----------                                                                                                 ------------




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST -- PENNSYLVANIA SERIES
PORTFOLIO OF INVESTMENTS May 31, 1996 (unaudited) (continued)

 PRINCIPAL
 AMOUNT (IN                                                                         COUPON     MATURITY
 THOUSANDS)                                                                          RATE        DATE        VALUE
- -----------                                                                        ---------  ----------  ------------
             SHORT-TERM PENNSYLVANIA TAX-EXEMPT MUNICIPAL OBLIGATIONS (7.2%)
   $ 1,500   Delaware County Industrial Development Authority, United Parcel
              Service of America Inc Ser 1985 (Demand 06/03/96) ..................    3.60* %   12/01/15   $ 1,500,000
     2,000   Pennsylvania Higher Educational Facilities Authority, Carnegie
             Mellon Univ Ser D (Demand 06/03/96) .................................    3.65*     11/01/30     2,000,000
- -----------                                                                                               ------------
     3,500   TOTAL SHORT-TERM PENNSYLVANIA TAX-EXEMPT MUNICIPAL OBLIGATIONS
- -----------
              (IDENTIFIED COST $3,500,000) ..............................................................    3,500,000
                                                                                                          ------------
   $48,130   TOTAL INVESTMENTS (IDENTIFIED COST $47,570,762) (A) ............................      98.4%    48,065,695
===========
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES .................................       1.6        788,986
                                                                                                  -----   ------------
             NET ASSETS .....................................................................     100.0%   $48,854,681
                                                                                                  =====   ============
</TABLE>

- --------------------
    AMT    Alternative Minimum Tax.
    ETM    Escrowed to Maturity.
    ++     Prerefunded to call date shown.
     *     Current coupon of variable rate security.
    (a)    The aggregate cost for federal income tax purposes approximates
           identified cost. The aggregate gross unrealized appreciation was
           $1,027,478 and the aggregate gross unrealized depreciation was
           $532,545, resulting in net unrealized appreciation of $494,933.

Bond Insurance:
- ---------------
   AMBAC   AMBAC Indemnity Corporation.
   FGIC    Financial Guaranty Insurance Corporation.
    FSA    Financial Security Assurance Inc.
   MBIA    Municipal Bond Investors Assurance Corporation.

                      See Notes to Financial Statements




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
STATEMENTS OF ASSETS AND LIABILITIES May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                             ARIZONA       CALIFORNIA       FLORIDA      MASSACHUSETTS
                                                          -------------  --------------  -------------  ---------------
<S>                                                       <C>            <C>             <C>            <C>
ASSETS:
Investments in securities, at value* ....................   $45,106,747    $110,994,372    $68,884,330     $15,657,538
Cash ....................................................       146,376          69,931         --              71,448
Receivable for:
 Investments sold .......................................        --             --              --               5,000
 Shares of beneficial interest sold .....................           134           5,871         70,005          --
 Interest ...............................................       957,603       1,730,679        934,784         322,439
Prepaid expenses ........................................        14,188          15,391         12,183           7,835
Receivable from affiliate ...............................        --             --              --               1,124
                                                          -------------  --------------  -------------  ---------------
    TOTAL ASSETS ........................................    46,225,048     112,816,244     69,901,302      16,065,384
                                                          -------------  --------------  -------------  ---------------
LIABILITIES:
Payable for:
 Shares of beneficial interest repurchased ..............        60,461           2,000         33,587          60,000
 Dividends to shareholders ..............................        12,969          32,786         19,899           4,660
 Plan of distribution fee ...............................         5,893          14,473          8,902           2,034
 Investment management fee ..............................        13,750          33,771         20,771          --
Payable to bank .........................................        --             --              54,540          --
Accrued expenses ........................................        23,254          23,524         19,992          11,756
                                                          -------------  --------------  -------------  ---------------
    TOTAL LIABILITIES ...................................       116,327         106,554        157,691          78,450
                                                          -------------  --------------  -------------  ---------------
NET ASSETS:
Paid-in-capital .........................................    45,443,923     112,447,165     68,700,244      15,860,606
Undistributed net realized gain (accumulated net
 realized loss) .........................................       (60,275)       (124,710)       153,028          48,263
Net unrealized appreciation .............................       725,073         387,235        890,339          78,065
                                                          -------------  --------------  -------------  ---------------
    NET ASSETS ..........................................   $46,108,721    $112,709,690    $69,743,611     $15,986,934
                                                          =============  ==============  =============  ===============
*IDENTIFIED COST ........................................   $44,381,674    $110,607,137    $67,993,991     $15,579,473
                                                          =============  ==============  =============  ===============
SHARES OF BENEFICIAL INTEREST OUTSTANDING ...............     4,499,288      10,873,858      6,669,867       1,513,255
                                                          =============  ==============  =============  ===============
NET ASSET VALUE PER SHARE (unlimited authorized shares
 of $.01 par value) .....................................        $10.25          $10.37         $10.46          $10.56
                                                                 ======          ======         ======          ======
MAXIMUM OFFERING PRICE PER SHARE (net asset value plus
 4.17% of net asset value)** ............................        $10.68          $10.80         $10.90          $11.00
                                                                 ======          ======         ======          ======
</TABLE>

- --------------
   **  On sales of $25,000 or more, the offering price is reduced.

                      See Notes to Financial Statements



         
<PAGE>




<TABLE>
<CAPTION>

  MICHIGAN       MINNESOTA     NEW JERSEY      NEW YORK         OHIO        PENNSYLVANIA
- -------------  -------------  -------------  -------------  -------------  --------------
<S>            <C>            <C>            <C>            <C>            <C>
 $19,790,041     $ 9,962,595    $43,777,664    $13,282,944    $21,491,386    $48,065,695
     143,060         118,798         39,151         36,519        175,960         75,261

      --              --             --             --             --             --
      38,519          --            188,026         18,142         --             33,509
     241,371         150,069        770,459        215,111        343,020        726,937
       2,675           2,045          9,251          3,537          3,238          6,671
       2,048           3,460         --                902            840         --
- -------------  -------------  -------------  -------------  -------------  --------------
  20,217,714      10,236,967     44,784,551     13,557,155     22,014,444     48,908,073
- -------------  -------------  -------------  -------------  -------------  --------------

      --              --             --             --             10,125         --
       5,895           2,920         12,781          3,996          6,481         14,041
       2,582           1,306          5,683          1,737          2,814          6,253
       1,301          --             13,259         --              1,483         14,590
      --              --             --             --             --             --
      12,809          15,276         18,262         13,401         15,130         18,508
- -------------  -------------  -------------  -------------  -------------  --------------
      22,587          19,502         49,985         19,134         36,033         53,392
- -------------  -------------  -------------  -------------  -------------  --------------

  19,938,397      10,191,783     44,793,686     13,421,292     22,034,470     48,304,377
      13,823         (57,514)      (171,977)        13,940        (91,012)        55,371
     242,907          83,196        112,857        102,789         34,953        494,933
- -------------  -------------  -------------  -------------  -------------  --------------
 $20,195,127     $10,217,465    $44,734,566    $13,538,021    $21,978,411    $48,854,681
=============  =============  =============  =============  =============  ==============
 $19,547,134     $ 9,879,399    $43,664,807    $13,180,155    $21,456,433    $47,570,762
=============  =============  =============  =============  =============  ==============
   1,935,232         992,941      4,334,351      1,294,866      2,111,918      4,663,814
=============  =============  =============  =============  =============  ==============
      $10.44          $10.29         $10.32         $10.46         $10.41         $10.48
      ------          ------         ------         ------         ------         ------
      $10.88          $10.72         $10.75         $10.90         $10.84         $10.92
      ======          ======         ======         ======         ======         ======
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
STATEMENTS OF OPERATIONS For the six months ended May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                             ARIZONA      CALIFORNIA       FLORIDA       MASSACHUSETTS
                                          -------------  -------------  --------------  ---------------
<S>                                       <C>            <C>            <C>             <C>
INVESTMENT INCOME:
 INTEREST INCOME ........................   $ 1,412,812    $ 3,451,655    $ 2,086,194       $ 470,554
                                          -------------  -------------  --------------  ---------------
 EXPENSES
  Investment management fee .............        85,267        204,643        126,871          28,688
  Plan of distribution fee ..............        32,884         85,167         50,700          11,722
  Professional fees .....................        13,795         16,030         15,242          13,344
  Transfer agent fees and expenses  .....        10,053         18,519         13,597           3,650
  Shareholder reports and notices  ......         4,618         10,105          5,948           1,851
  Trustees' fees and expenses ...........         1,940          3,218          1,975             416
  Registration fees .....................         5,128          1,985          3,173           2,663
  Custodian fees ........................         1,763          2,840          2,062             735
  Organizational expenses ...............        --                414            414             414
  Other .................................         5,700          6,686          5,979           3,722
                                          -------------  -------------  --------------  ---------------
    TOTAL EXPENSES BEFORE EXPENSE OFFSET
     AND AMOUNTS WAIVED/REIMBURSED ......       161,148        349,607        225,961          67,205
    LESS: AMOUNTS WAIVED/REIMBURSED  ....        --             --             --             (25,492)
    LESS: EXPENSE OFFSET ................        (1,753)        (2,821)        (2,043)           (729)
                                          -------------  -------------  --------------  ---------------
    TOTAL EXPENSES AFTER EXPENSE OFFSET
     AND AMOUNTS WAIVED/REIMBURSED ......       159,395        346,786        223,918          40,984
                                          -------------  -------------  --------------  ---------------
    NET INVESTMENT INCOME ...............     1,253,417      3,104,869      1,862,276         429,570
                                          -------------  -------------  --------------  ---------------
NET REALIZED AND UNREALIZED GAIN (LOSS):
  Net realized gain (loss) ..............       180,508        199,261        230,386          48,264
  Net change in unrealized appreciation      (2,035,953)    (3,646,426)    (3,137,844)       (637,733)
                                          -------------  -------------  --------------  ---------------
    NET LOSS ............................    (1,855,445)    (3,447,165)    (2,907,458)       (589,469)
                                          -------------  -------------  --------------  ---------------
    NET DECREASE ........................   $  (602,028)   $  (342,296)   $(1,045,182)      $(159,899)
                                          =============  =============  ==============  ===============
</TABLE>

                      See Notes to Financial Statements




         
<PAGE>


<TABLE>
<CAPTION>

  MICHIGAN     MINNESOTA    NEW JERSEY      NEW YORK        OHIO       PENNSYLVANIA
- ------------  -----------  -------------  ------------  ------------  --------------
<S>           <C>          <C>            <C>           <C>           <C>
  $ 611,575     $ 311,700    $ 1,383,619    $ 407,134     $ 649,052     $ 1,483,017
- ------------  -----------  -------------  ------------  ------------  --------------

     36,910        19,057         81,861       24,807        39,854          89,298
     14,736         7,175         30,440        8,501        16,080          37,098
     14,402        17,845         14,538       14,366        17,367          13,844
      6,419         2,804         12,701        3,053         5,831          11,187
      2,229         2,108          4,104        2,713         2,798           6,421
        640           248          1,440          407           739           1,703
      2,170         1,815          2,256        3,949         1,482           2,703
        757           415          1,349          647           941           2,766
        414           414            414          414           414             414
      3,167         3,875          5,003        3,669         3,879           5,878
- ------------  -----------  -------------  ------------  ------------  --------------

     81,844        55,756        154,106       62,526        89,385         171,312
    (28,338)      (29,127)        --          (28,542)      (31,519)         --
       (749)         (415)        (1,339)        (640)         (931)         (2,758)
- ------------  -----------  -------------  ------------  ------------  --------------

     52,757        26,214        152,767       33,344        56,935         168,554
- ------------  -----------  -------------  ------------  ------------  --------------
    558,818       285,486      1,230,852      373,790       592,117       1,314,463
- ------------  -----------  -------------  ------------  ------------  --------------

     27,044        (1,658)       204,120       20,293        78,656          80,484
   (775,694)     (333,606)    (2,039,457)    (576,959)     (930,618)     (1,872,223)
- ------------  -----------  -------------  ------------  ------------  --------------
   (748,650)     (335,264)    (1,835,337)    (556,666)     (851,962)     (1,791,739)
- ------------  -----------  -------------  ------------  ------------  --------------
  $(189,832)    $ (49,778)   $  (604,485)   $(182,876)    $(259,845)    $  (477,276)
============  ===========  =============  ============  ============  ==============
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
STATEMENTS OF CHANGES IN NET ASSETS
- -----------------------------------------------------------------------------
For the six months ended May 31, 1996 (unaudited) and
for the year ended November 30, 1995

<TABLE>
<CAPTION>
                                                            ARIZONA                       CALIFORNIA
                                                 ----------------------------  ------------------------------
                                                      1996           1995            1996            1995
                                                 -------------  -------------  --------------  --------------
<S>                                              <C>            <C>            <C>             <C>
INCREASE (DECREASE) IN NET ASSETS:
 Operations:
  Net investment income ........................   $ 1,253,417    $ 2,634,161    $  3,104,869    $  6,371,272
  Net realized gain (loss) .....................       180,508        136,451         199,261        (247,082)
  Net change in unrealized appreciation/
   depreciation ................................    (2,035,953)     5,859,879      (3,646,426)     15,149,432
                                                 -------------  -------------  --------------  --------------
    Net increase (decrease) ....................      (602,028)     8,630,491        (342,296)     21,273,622
                                                 -------------  -------------  --------------  --------------
 Dividends and distributions from:
  Net investment income ........................    (1,253,417)    (2,634,161)     (3,104,869)     (6,371,272)
  Net realized gain ............................        --             --             --              --
                                                 -------------  -------------  --------------  --------------
    Total ......................................    (1,253,417)    (2,634,161)     (3,104,869)     (6,371,272)
                                                 -------------  -------------  --------------  --------------
 Transactions in shares of beneficial interest:
  Net proceeds from sales ......................     2,460,108      5,174,717       5,913,481       9,740,664
  Reinvestment of dividends and distributions ..       615,394      1,334,340       1,515,636       3,199,688
  Cost of shares repurchased ...................    (5,401,828)    (9,843,250)     (9,041,706)    (22,523,316)
                                                 -------------  -------------  --------------  --------------
    Net increase (decrease) ....................    (2,326,326)    (3,334,193)     (1,612,589)     (9,582,964)
                                                 -------------  -------------  --------------  --------------
    Total increase (decrease) ..................    (4,181,771)     2,662,137      (5,059,754)      5,319,386
NET ASSETS:
 Beginning of period ...........................    50,290,492     47,628,355     117,769,444     112,450,058
                                                 -------------  -------------  --------------  --------------
 END OF PERIOD .................................   $46,108,721    $50,290,492    $112,709,690    $117,769,444
                                                 =============  =============  ==============  ==============
SHARES ISSUED AND REPURCHASED:
 Sold ..........................................       232,888        508,816         557,697         954,040
 Reinvestment of dividends and distributions  ..        58,577        130,488         143,223         313,444
 Repurchased ...................................      (514,405)      (971,313)       (860,343)     (2,223,029)
                                                 -------------  -------------  --------------  --------------
 Net increase (decrease) .......................      (222,940)      (332,009)       (159,423)       (955,545)
                                                 =============  =============  ==============  ==============
</TABLE>

See Notes to Financial Statements



         
<PAGE>

<TABLE>
<CAPTION>

            FLORIDA                    MASSACHUSETTS                    MICHIGAN
- -----------------------------  ----------------------------  ----------------------------
     1996            1995           1996           1995           1996           1995
- -------------  --------------  -------------  -------------  -------------  -------------
<S>            <C>             <C>            <C>            <C>            <C>
 $ 1,862,276     $  3,872,871    $   429,570    $   887,197    $   558,818    $ 1,145,642
     230,386          297,548         48,264         79,118         27,044         11,026
  (3,137,844)       8,855,916       (637,733)     2,071,069       (775,694)     2,758,269
- -------------  --------------  -------------  -------------  -------------  -------------
  (1,045,182)      13,026,335       (159,899)     3,037,384       (189,832)     3,914,937
- -------------  --------------  -------------  -------------  -------------  -------------
  (1,862,276)      (3,872,871)      (429,570)      (887,197)      (558,818)    (1,145,642)
      --              --             (35,280)        --             --             --
- -------------  --------------  -------------  -------------  -------------  -------------
  (1,862,276)      (3,872,871)      (464,850)      (887,197)      (558,818)    (1,145,642)
- -------------  --------------  -------------  -------------  -------------  -------------
   5,738,937       10,874,113        915,627      2,298,582      1,239,761      2,130,223
     673,762        1,388,435        247,550        499,293        328,099        653,136
  (7,819,691)     (18,815,557)    (1,505,957)    (3,500,367)    (2,296,701)    (3,711,031)
- -------------  --------------  -------------  -------------  -------------  -------------
  (1,406,992)      (6,553,009)      (342,780)      (702,492)      (728,841)      (927,672)
- -------------  --------------  -------------  -------------  -------------  -------------
  (4,314,450)       2,600,455       (967,529)     1,447,695     (1,477,491)     1,841,623
  74,058,061       71,457,606     16,954,463     15,506,768     21,672,618     19,830,995
- -------------  --------------  -------------  -------------  -------------  -------------
 $69,743,611     $ 74,058,061    $15,986,934    $16,954,463    $20,195,127    $21,672,618
=============  ==============  =============  =============  =============  =============
     532,327        1,040,055         84,366        217,640        116,262        205,926
      62,679          132,818         22,893         47,460         30,688         63,129
    (729,350)      (1,813,124)      (138,885)      (335,507)      (215,901)      (361,199)
- -------------  --------------  -------------  -------------  -------------  -------------
    (134,344)        (640,251)       (31,626)       (70,407)       (68,951)       (92,144)
=============  ==============  =============  =============  =============  =============
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
STATEMENTS OF CHANGES IN NET ASSETS (continued)
- -----------------------------------------------------------------------------
For the six months ended May 31, 1996 (unaudited) and
for the year ended November 30, 1995

<TABLE>
<CAPTION>
                                                          MINNESOTA                     NEW JERSEY
                                                ----------------------------  ----------------------------
                                                     1996           1995           1996           1995
                                                -------------  -------------  -------------  -------------
<S>                                             <C>            <C>            <C>            <C>
INCREASE (DECREASE) IN NET ASSETS:
 Operations:
  Net investment income .......................   $   285,486    $   576,268    $ 1,230,852    $ 2,566,230
  Net realized gain (loss) ....................        (1,658)        17,107        204,120       (125,009)
  Net change in unrealized appreciation/
   depreciation ...............................      (333,606)     1,390,495     (2,039,457)     6,003,704
                                                -------------  -------------  -------------  -------------
    Net increase (decrease) ...................       (49,778)     1,983,870       (604,485)     8,444,925
                                                -------------  -------------  -------------  -------------
 Dividends and distributions from:
  Net investment income .......................      (285,486)      (576,268)    (1,230,852)    (2,566,230)
  Net realized gain ...........................        --             --             --             --
                                                -------------  -------------  -------------  -------------
    Total .....................................      (285,486)      (576,268)    (1,230,852)    (2,566,230)
                                                -------------  -------------  -------------  -------------
Transactions in shares of beneficial interest:
  Net proceeds from sales .....................       289,392      1,489,363      2,553,624      3,969,557
  Reinvestment of dividends and
   distributions ..............................       175,667        319,206        692,838      1,419,332
  Cost of shares repurchased ..................    (1,142,014)    (1,779,338)    (4,565,161)    (8,876,237)
                                                -------------  -------------  -------------  -------------
    Net increase (decrease) ...................      (676,955)        29,231     (1,318,699)    (3,487,348)
                                                -------------  -------------  -------------  -------------
    Total increase (decrease) .................    (1,012,219)     1,436,833     (3,154,036)     2,391,347
NET ASSETS:
 Beginning of period ..........................    11,229,684      9,792,851     47,888,602     45,497,255
                                                -------------  -------------  -------------  -------------
 END OF PERIOD ................................   $10,217,465    $11,229,684    $44,734,566    $47,888,602
                                                =============  =============  =============  =============
SHARES ISSUED AND REPURCHASED:
 Sold .........................................        27,427        145,931        240,917        385,163
 Reinvestment of dividends and distributions  .        16,753         31,444         65,546        137,676
 Repurchased ..................................      (109,570)      (173,959)      (434,280)      (867,546)
                                                -------------  -------------  -------------  -------------
 Net increase (decrease) ......................       (65,390)         3,416       (127,817)      (344,707)
                                                =============  =============  =============  =============
</TABLE>

See Notes to Financial Statements



         
<PAGE>


<TABLE>
<CAPTION>
           NEW YORK                        OHIO                      PENNSYLVANIA
- ----------------------------  ----------------------------  -----------------------------
     1996           1995           1996           1995           1996            1995
- -------------  -------------  -------------  -------------  -------------  --------------
<S>            <C>            <C>            <C>            <C>            <C>
 $   373,790     $   807,985    $   592,117    $ 1,191,350    $ 1,314,463    $  2,703,574
      20,293           9,027         78,656        161,498         80,484          59,271
    (576,959)      2,049,802       (930,618)     2,795,212     (1,872,223)      6,305,461
- -------------  -------------  -------------  -------------  -------------  --------------
    (182,876)      2,866,814       (259,845)     4,148,060       (477,276)      9,068,306
- -------------  -------------  -------------  -------------  -------------  --------------

    (373,790)       (807,985)      (592,117)    (1,191,350)    (1,314,463)     (2,703,574)
      --              --             --             --             --             --
- -------------  -------------  -------------  -------------  -------------  --------------
    (373,790)       (807,985)      (592,117)    (1,191,350)    (1,314,463)     (2,703,574)
- -------------  -------------  -------------  -------------  -------------  --------------

     805,297       1,474,331      1,675,021      2,891,735      1,809,409       8,975,484
     195,219         426,508        357,795        733,649        703,911       1,417,646
  (1,294,018)     (4,093,402)    (2,306,147)    (4,171,051)    (5,801,952)    (10,380,066)
- -------------  -------------  -------------  -------------  -------------  --------------
    (293,502)     (2,192,563)      (273,331)      (545,667)    (3,288,632)         13,064
- -------------  -------------  -------------  -------------  -------------  --------------
    (850,168)       (133,734)    (1,125,293)     2,411,043     (5,080,371)      6,377,796

  14,388,189      14,521,923     23,103,704     20,692,661     53,935,052      47,557,256
- -------------  -------------  -------------  -------------  -------------  --------------
 $13,538,021     $14,388,189    $21,978,411    $23,103,704    $48,854,681    $ 53,935,052
=============  =============  =============  =============  =============  ==============

      74,538         144,006        157,213        279,961        168,907         864,290
      18,162          41,174         33,542         71,040         65,649         136,142
    (120,883)       (397,106)      (217,749)      (408,164)      (540,387)     (1,003,414)
- -------------  -------------  -------------  -------------  -------------  --------------
     (28,183)       (211,926)       (26,994)       (57,163)      (305,831)         (2,982)
=============  =============  =============  =============  =============  ==============
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (unaudited)
- -----------------------------------------------------------------------------

1. ORGANIZATION AND ACCOUNTING POLICIES -- Dean Witter Multi-State Municipal
Series Trust (the "Fund") is registered under the Investment Company Act of
1940, as amended (the "Act"), as a non-diversified, open-end management
investment company.

The Fund, organized on October 29, 1990, as a Massachusetts business trust,
is comprised of ten separate Series (the "Series"). Each of the Series
commenced operations on January 15, 1991, with the exception of the Arizona
Series which commenced operations on April 30, 1991.

The following is a summary of significant accounting policies:

    A. Valuation of Investments -- Portfolio securities are valued by an
    outside independent pricing service approved by the Fund's Trustees. The
    pricing service has informed the Fund that in valuing the portfolio
    securities, it uses both a computerized matrix of tax-exempt securities
    and evaluations by its staff, in each case based on information concerning
    market transactions and quotations from dealers which reflect the bid side
    of the market each day. The portfolio securities are thus valued by
    reference to a combination of transactions and quotations for the same or
    other securities believed to be comparable in quality, coupon, maturity,
    type of issue, call provisions, trading characteristics and other features
    deemed to be relevant. Short-term debt securities having a maturity date
    of more than sixty days at time of purchase are valued on a mark-to-market
    basis until sixty days prior to maturity and thereafter at amortized cost
    based on their value on the 61st day. Short-term debt securities having a
    maturity date of sixty days or less at the time of purchase are valued at
    amortized cost.

    B. Accounting for Investments -- Security transactions are accounted for on
    the trade date (date the order to buy or sell is executed). Realized gains
    and losses on security transactions are determined by the identified cost
    method. Discounts are accreted and premiums are amortized over the life of
    the respective securities. Interest income is accrued daily.

    C. Federal Income Tax Status -- It is the Fund's policy to comply
    individually for each Series with the requirements of the Internal Revenue
    Code applicable to regulated investment companies and to distribute all of
    its taxable and nontaxable income to its shareholders. Accordingly, no
    federal income tax provision is required.

    D. Dividends and Distributions to Shareholders -- The Fund records
    dividends and distributions to 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
    reclassification. 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.




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (unaudited) (continued)

    E. Organizational Expenses -- Dean Witter InterCapital Inc. (the
    "Investment Manager") paid the organizational expenses of the Fund of
    approximately $204,000 of which $150,000 of such expenses ($16,667 for
    each of the initial Series excluding the Arizona Series) have been
    reimbursed. Such expenses have been deferred and were amortized by the
    straight-line method over a period not to exceed five years from the
    commencement of operations. Such expenses were fully amortized as of
    January 16, 1996.

    F. Expenses -- Direct expenses are charged to the respective Series and
    general corporate expenses are allocated on the basis of relative net
    assets or equally among the Series.

2. INVESTMENT MANAGEMENT AGREEMENT -- Pursuant to an Investment Management
Agreement, each Series of the Fund pays the Investment Manager a management
fee, accrued daily and payable monthly, by applying the annual rate of 0.35%
to the daily net assets of each Series determined as of the close of each
business day.

   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.

   The Investment Manager has undertaken to waive management fees and assume
all expenses that exceeded 0.50% of the daily net assets with respect to the
Massachusetts, Michigan, Minnesota, New York and Ohio Series through December
31, 1996. At May 31, 1996, included in the Statements of Assets and
Liabilities are receivables from an affiliate which represent expense
reimbursements due to the Fund.

3. PLAN OF DISTRIBUTION -- Dean Witter Distributors Inc. (the "Distributor"),
an affiliate of the Investment Manager, is the distributor of the Fund's
shares and, in accordance with a Plan of Distribution (the "Plan") pursuant
to Rule 12b-1 under the Act, finances certain expenses in connection with the
distribution of shares of the Fund.

   Under the Plan, the Distributor bears the expense of all promotional and
distribution related activities on behalf of the Fund, except for expenses
that the Trustees determined to reimburse, as described below. The following
activities and services may be provided by the Distributor, under the Plan:
(1) compensation to, and expenses of, account executives of Dean Witter
Reynolds Inc., an affiliate of the Investment Manager and Distributor, and
other employees and selected broker-dealers; (2) sales incentives and bonuses
to sales representatives and to marketing personnel in connection with
promoting sales of the Fund's shares; (3) expenses incurred in connection
with promoting sales of the Fund's shares; (4) preparing and distributing
sales literature; and (5) providing advertising and promotional activities,
including direct mail solicitation and television, radio, newspaper, magazine
and other media advertisements.




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (unaudited) (continued)

   The Fund is authorized to reimburse the Distributor for specific expenses
the Distributor incurs or plans to incur in promoting the distribution of the
Fund's shares. The amount of each monthly reimbursement payment may in no
event exceed an amount equal to a payment at the annual rate of 0.15% of the
Fund's average daily net assets during the month. Expenses incurred by the
Distributor pursuant to the Plan in any fiscal year will not be reimbursed by
the Fund through payments accrued in any subsequent fiscal year. For the six
months ended May 31, 1996, the distribution fees were accrued at the
following annual rates:

<TABLE>
<CAPTION>
                 ARIZONA    CALIFORNIA    FLORIDA    MASSACHUSETTS    MICHIGAN
                ---------  ------------  ---------  ---------------  ----------
<S>             <C>        <C>           <C>        <C>              <C>
Annual Rate  ..    0.13%        0.15%       0.14%         0.14%          0.14%
                =========  ============  =========  ===============  ==========
</TABLE>


<TABLE>
<CAPTION>
                  MINNESOTA    NEW JERSEY    NEW YORK    OHIO     PENNSYLVANIA
                -----------  ------------  ----------  -------  --------------
<S>             <C>          <C>           <C>         <C>      <C>
Annual Rate  ..     0.13%         0.13%        0.12%     0.14%        0.15%
                ===========  ============  ==========  =======  ==============
</TABLE>

   For the six months ended May 31, 1996, the Distributor has informed the
Fund that it received commissions from the sale of the Fund's shares of
beneficial interest as follows:

<TABLE>
<CAPTION>
                 ARIZONA    CALIFORNIA    FLORIDA     MASSACHUSETTS    MICHIGAN
                ---------  ------------  ----------  ---------------  ----------
<S>             <C>        <C>           <C>         <C>              <C>
Commissions  ..   $77,195     $168,320     $200,310       $26,581       $37,765
                =========  ============  ==========  ===============  ==========
</TABLE>

<TABLE>
<CAPTION>
                 MINNESOTA    NEW JERSEY    NEW YORK     OHIO      PENNSYLVANIA
                -----------  ------------  ----------  ---------  --------------
<S>             <C>          <C>           <C>         <C>        <C>
Commissions  ..    $10,058      $84,274      $23,159     $58,548      $57,362
                ===========  ============  ==========  =========  ==============
</TABLE>

   Such commissions are not an expense of the Fund; they are deducted from
the proceeds of the sale of the shares of beneficial interest.

4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES -- The cost of
purchases and proceeds from the sales of portfolio securities, excluding
short-term investments, for the six months ended May 31, 1996 were as
follows:

<TABLE>
<CAPTION>
                ARIZONA      CALIFORNIA       FLORIDA      MASSACHUSETTS      MICHIGAN
              ------------  -------------  -------------  ---------------  --------------
<S>           <C>           <C>            <C>            <C>              <C>
Purchases  .. $3,312,183      $11,498,320    $13,512,060     $1,702,771    $   --
              ============  =============  =============  ===============  ==============
Sales ....... $8,869,834      $16,346,535    $12,179,955     $1,836,714    $1,335,725
              ============  =============  =============  ===============  ==============
                Minnesota     New Jersey      New York          Ohio         Pennsylvania
              ------------  -------------  -------------  ---------------  --------------
Purchases  .. $    --         $   997,500    $   488,635     $4,413,970    $   --
              ============  =============  =============  ===============  ==============
Sales ....... $  757,050      $ 7,644,544    $ 1,271,293     $5,098,703    $6,821,875
              ============  =============  =============  ===============  ==============
</TABLE>





         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (unaudited) (continued)

   Dean Witter Trust Company, an affiliate of the Investment Manager and
Distributor, is the Fund's transfer agent. For the six months ended May 31,
1996, each of the Series had transfer agent fees and expenses payable as
follows:

<TABLE>
<CAPTION>
                                ARIZONA       CALIFORNIA      FLORIDA       MASSACHUSETTS        MICHIGAN
                             -------------  --------------  ------------  -----------------  ----------------
<S>                          <C>            <C>             <C>           <C>                <C>
Transfer Agent Fees and
 Expenses Payable .......... $2,732         $3,756          $2,864        $1,003             $1,321
                             =============  ==============  ============  =================  ================
                               Minnesota      New Jersey      New York          Ohio           Pennsylvania
                             -------------  --------------  ------------  -----------------  ----------------
Transfer Agent Fees and
 Expenses Payable .......... $  468         $2,973          $  565        $1,326             $2,686
                             =============  ==============  ============  =================  ================
</TABLE>

   The Fund has an unfunded noncontributory defined benefit pension plan
covering all Trustees of the Fund who will have served as independent
Trustees for at least five years at the time of retirement. Benefits under
this plan are based on years of service and compensation during the last five
years of service. Aggregate pension costs for the six months ended May 31,
1996 included in Trustees' fees and expenses in the Statements of Operations
and the accrued pension liability included in accrued expenses in the
Statements of Assets and Liabilities for each of the respective Series were
as follows:

<TABLE>
<CAPTION>
                                   ARIZONA       CALIFORNIA      FLORIDA       MASSACHUSETTS        MICHIGAN
                                -------------  --------------  ------------  -----------------  ----------------
<S>                             <C>            <C>             <C>           <C>                <C>
Aggregate Pension Costs  ...... $  420           $1,242          $  603          $  206             $  254
                                =============  ==============  ============  =================  ================
                                  Minnesota      New Jersey      New York          Ohio           Pennsylvania
                                -------------  --------------  ------------  -----------------  ----------------
                                $  113           $  390          $   98          $  329             $  632
                                =============  ==============  ============  =================  ================
                                   Arizona       California      Florida       Massachusetts        Michigan
                                -------------  --------------  ------------  -----------------  ----------------
Accrued Pension Liability  .... $3,021           $7,384          $4,550          $1,064             $1,327
                                =============  ==============  ============  =================  ================
                                  Minnesota      New Jersey      New York          Ohio           Pennsylvania
                                -------------  --------------  ------------  -----------------  ----------------
                                $  688           $2,910          $  902          $1,457             $3,210
                                =============  ==============  ============  =================  ================
</TABLE>




         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (unaudited) (continued)

5. FEDERAL INCOME TAX STATUS --At November 30, 1995, the following Series had
an approximate net capital loss carryover which may be used to offset future
capital gains to the extent provided by regulations:

<TABLE>
<CAPTION>

AVAILABLE THROUGH NOVEMBER 30     2002        2003       TOTAL
- -----------------------------  ----------  ----------  ----------
<S>                            <C>         <C>         <C>
Arizona ......................   $240,800       --       $240,800
California ...................     76,900  $247,100       324,000
Florida ......................     75,800       --         75,800
Massachusetts ................      --          --          --
Michigan .....................     13,200       --         13,200
Minnesota ....................     32,000    24,300        56,300
New Jersey ...................    207,100   169,000       376,100
New York .....................      6,300       --          6,300
Ohio .........................    172,700       --        172,700
Pennsylvania .................     25,100       --         25,100

</TABLE>

   During the year ended November 30, 1995, the following Series had utilized
capital loss carryovers of approximately:

<TABLE>
<CAPTION>
 ARIZONA     FLORIDA     MASSACHUSETTS    MICHIGAN    NEW YORK      OHIO      PENNSYLVANIA
- ----------  ----------  ---------------  ----------  ----------  ----------  --------------
<S>         <C>         <C>              <C>         <C>         <C>         <C>
$136,400      $299,100       $43,800       $11,000      $7,500     $127,400      $49,500
==========  ==========  ===============  ==========  ==========  ==========  ==============
</TABLE>

   Capital losses incurred after October 31 ("post-October" losses) within
the taxable year are deemed to arise on the first business day of the Funds'
next taxable year. The Florida Series incurred and will elect to defer net
capital losses during fiscal 1995 of $1,600.



         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
FINANCIAL HIGHLIGHTS
- -----------------------------------------------------------------------------

Selected ratios and per share data for a share of beneficial interest
outstanding throughout each period:

<TABLE>
<CAPTION>
                     NET ASSET                                                                                      TOTAL
       YEAR            VALUE         NET        NET REALIZED    TOTAL FROM                                        DIVIDENDS
       ENDED         BEGINNING    INVESTMENT   AND UNREALIZED   INVESTMENT    DIVIDENDS TO   DISTRIBUTIONS TO        AND
   NOVEMBER 30,      OF PERIOD      INCOME      GAIN (LOSS)     OPERATIONS    SHAREHOLDERS     SHAREHOLDERS     DISTRIBUTIONS
- -----------------  -----------  ------------  --------------  ------------  --------------  ----------------  ---------------
<S>                <C>          <C>           <C>             <C>           <C>             <C>               <C>
Arizona Series
1991(a)               $ 9.60        $0.36          $ 0.17         $ 0.53         $(0.36)    $ --                  $(0.36)
1992                    9.77         0.64            0.41           1.05          (0.64)      --                   (0.64)
1993                   10.18         0.58            0.56           1.14          (0.58)    (0.02)                 (0.60)
1994                   10.72         0.55           (1.29)         (0.74)         (0.55)    (0.01)                 (0.56)
1995                    9.42         0.54            1.23           1.77          (0.54)      --                   (0.54)
1996*                  10.65         0.27           (0.40)         (0.13)         (0.27)      --                   (0.27)
California Series
1991(b)                 9.60         0.60            0.39           0.99          (0.60)      --                   (0.60)
1992                    9.99         0.67            0.34           1.01          (0.67)    (0.01)                 (0.68)
1993                   10.32         0.61            0.68           1.29          (0.61)      --                   (0.61)
1994                   11.00         0.58           (1.48)         (0.90)         (0.58)    (0.14)                 (0.72)
1995                    9.38         0.56            1.29           1.85          (0.56)      --                   (0.56)
1996*                  10.67         0.28           (0.30)         (0.02)         (0.28)      --                   (0.28)
Florida Series
1991(b)                 9.60         0.55            0.28           0.83          (0.55)      --                   (0.55)
1992                    9.88         0.64            0.41           1.05          (0.64)      --                   (0.64)
1993                   10.29         0.59            0.64           1.23          (0.59)      --                   (0.59)
1994                   10.93         0.56           (1.33)         (0.77)         (0.56)      --                   (0.56)
1995                    9.60         0.56            1.28           1.84          (0.56)      --                   (0.56)
1996*                  10.88         0.28           (0.42)         (0.14)         (0.28)      --                   (0.28)
      Massachusetts Series
1991(b)                 9.60         0.54            0.38           0.92          (0.54)      --                   (0.54)
1992                    9.98         0.66            0.42           1.08          (0.66)    (0.04)                 (0.70)
1993                   10.36         0.60            0.72           1.32          (0.60)      --                   (0.60)
1994                   11.08         0.56           (1.38)         (0.82)         (0.56)    (0.10)                 (0.66)
1995                    9.60         0.57            1.37           1.94          (0.57)      --                   (0.57)
1996*                  10.97         0.28           (0.39)         (0.11)         (0.28)    (0.02)                 (0.30)
Michigan Series
1991(b)                 9.60         0.54            0.36           0.90          (0.54)      --                   (0.54)
1992                    9.96         0.65            0.46           1.11          (0.65)    (0.01)                 (0.66)
1993                   10.41         0.61            0.64           1.25          (0.61)      --                   (0.61)
1994                   11.05         0.56           (1.41)         (0.85)         (0.56)    (0.18)                 (0.74)
1995                    9.46         0.57            1.35           1.92          (0.57)      --                   (0.57)
1996*                  10.81         0.28           (0.37)         (0.09)         (0.28)      --                   (0.28)
</TABLE>

- ----------------
   (a)  April 30, 1991 (commencement of operations) to November 30, 1991.
   (b)  January 15, 1991 (commencement of operations) to November 30, 1991.
    *   For the six months ended May 31, 1996 (unaudited).

                      See Notes to Financial Statements




         
<PAGE>


<TABLE>
<CAPTION>
                                        RATIOS TO AVERAGE NET ASSETS   RATIOS TO AVERAGE NET ASSETS
                                        (AFTER EXPENSES WERE ASSUMED  (BEFORE EXPENSES WERE ASSUMED)++
 NET ASSET                NET ASSETS    -----------------------------  ----------------------------
   VALUE        TOTAL       END OF                          NET                         NET          PORTFOLIO
  END OF     INVESTMENT     PERIOD                       INVESTMENT                  INVESTMENT       TURNOVER
 PERIOD        RETURN+     (000'S)          EXPENSES       INCOME       EXPENSES      INCOME            RATE
- ---------    ----------  ------------      -----------  ------------  ------------  --------------  ------------
<S>         <C>           <C>           <C>            <C>              <C>           <C>            <C>
   $ 9.77      5.66%(1)     $ 20,733      0.15%(2)       6.32%(2)      1.43%(2)      5.04%(2)           8%(1)
    10.18     11.08           38,812      0.15           6.33          0.74          5.74              15
    10.72     11.42           59,877      0.48           5.40          0.65          5.22               5
     9.42     (7.16)          47,628      0.62           5.33          0.63          5.32              11
    10.65     19.21           50,290      0.65 (3)       5.33          0.65          5.33               6
    10.25     (1.24)(1)       46,109      0.66 (2)(3)    5.15 (2)      0.66 (2)      5.15 (2)           7 (1)

     9.99     10.29 (1)       41,568      0.15 (2)       6.53 (2)      0.97 (2)      5.71 (2)          24 (1)
    10.32     10.23           95,604      0.15           6.36          0.67          5.84               5
    11.00     12.77          139,308      0.48           5.57          0.60          5.45              11
     9.38     (8.65)         112,450      0.58           5.59          0.59          5.58              12
    10.67     20.15          117,769      0.60 (3)       5.50          0.60          5.50               5
    10.37     (0.20)(1)      112,710      0.60 (2)(3)    5.31 (2)      0.60 (2)      5.31 (2)          10 (1)

     9.88      8.84 (1)       17,719      0.15 (2)       6.45 (2)      1.27 (2)      5.33 (2)          10 (1)
    10.29     10.92           51,560      0.15           6.19          0.73          5.62               6
    10.93     12.20           84,494      0.48           5.39          0.63          5.23               3
     9.60     (7.29)          71,458      0.61           5.34          0.62          5.33               3
    10.88     19.54           74,058      0.63 (3)       5.34          0.63          5.34               8
    10.46     (1.36)(1)       69,744      0.62 (2)(3)    5.14 (2)      0.62 (2)      5.14 (2)          18 (1)

     9.98      9.87 (1)        3,205      0.15 (2)       6.50 (2)      2.50 (2)      4.08 (2)          40 (1)
    10.36     11.19           10,113      0.14           6.26          1.25          5.16              10
    11.08     13.06           18,344      0.48           5.47          0.84          5.10              12
     9.60     (7.71)          15,507      0.50           5.35          0.78          5.07              10
    10.97     20.58           16,954      0.50 (3)++     5.39          0.79          5.11               7
    10.56     (0.97)(1)       15,987      0.50 (2)(3)++  5.24 (2)      0.82 (2)      4.92 (2)          11 (1)

     9.96      9.54 (1)        6,630      0.15 (2)       6.54 (2)      1.73 (2)      4.96 (2)          46 (1)
    10.41     11.78           13,809      0.14           6.28          1.01          5.42               9
    11.05     12.28           22,083      0.48           5.53          0.80          5.20              15
     9.46     (8.07)          19,831      0.50           5.44          0.75          5.19               9
    10.81     20.69           21,673      0.50 (3)++     5.49          0.77          5.23              22
    10.44     (0.83)(1)       20,195      0.50 (2)(3)++  5.30 (2)      0.78 (2)      5.03 (2)          -- (1)
</TABLE>

- -----------------
   +    Does not reflect the deduction of sales load. Calculated based on the
        net asset value as of the last business day of the period.
   ++   After application of the Fund's expense limitation.
   (1)  Not annualized.
   (2)  Annualized.
   (3)  The above expense ratios reflect the effect for gross-up of custody
        cash credits for the Arizona, California, Florida, Massachusetts and
        Michigan Series of 0.01%, 0.01%, 0.01%, 0.01% and 0.01%,
        respectively.
   ++   After application of the Investment Manager's voluntary waiver.



         
<PAGE>

DEAN WITTER MULTI-STATE MUNICIPAL SERIES TRUST
FINANCIAL HIGHLIGHTS (continued)
- -----------------------------------------------------------------------------

Selected ratios and per share data for a share of beneficial interest
outstanding throughout each period:

<TABLE>
<CAPTION>
                    NET ASSET                                                                                      TOTAL
YEAR                  VALUE         NET        NET REALIZED    TOTAL FROM                                        DIVIDENDS
ENDED               BEGINNING    INVESTMENT   AND UNREALIZED   INVESTMENT    DIVIDENDS TO   DISTRIBUTIONS TO        AND
NOVEMBER 30,        OF PERIOD      INCOME      GAIN (LOSS)     OPERATIONS    SHAREHOLDERS     SHAREHOLDERS     DISTRIBUTIONS
- ------------       -----------  ------------  --------------  ------------  --------------  ----------------   -------------
<S>               <C>          <C>           <C>             <C>           <C>             <C>               <C>
Minnesota Series
1991(b)              $ 9.60        $0.51          $ 0.19         $ 0.70         $(0.51)     $  --                  $(0.51)
1992                   9.79         0.63            0.32           0.95          (0.63)        --                   (0.63)
1993                  10.11         0.58            0.67           1.25          (0.58)        --                   (0.58)
1994                  10.78         0.55           (1.42)         (0.87)         (0.55)      (0.08)                 (0.63)
1995                   9.28         0.54            1.33           1.87          (0.54)        --                   (0.54)
1996*                 10.61         0.28           (0.32)         (0.04)         (0.28)        --                   (0.28)
New Jersey Series
1991(b)                9.60         0.55            0.35           0.90          (0.55)        --                   (0.55)
1992                   9.95         0.66            0.44           1.10          (0.66)      (0.04)                 (0.70)
1993                  10.35         0.60            0.62           1.22          (0.60)      (0.03)                 (0.63)
1994                  10.94         0.55           (1.39)         (0.84)         (0.55)      (0.08)                 (0.63)
1995                   9.47         0.56            1.26           1.82          (0.56)        --                   (0.56)
1996*                 10.73         0.28           (0.41)         (0.13)         (0.28)        --                   (0.28)
New York Series
1991(b)                9.60         0.54            0.46           1.00          (0.54)        --                   (0.54)
1992                  10.06         0.68            0.34           1.02          (0.68)      (0.06)                 (0.74)
1993                  10.34         0.62            0.69           1.31          (0.62)        --                   (0.62)
1994                  11.03         0.57           (1.52)         (0.95)         (0.57)      (0.05)                 (0.62)
1995                   9.46         0.56            1.42           1.98          (0.56)        --                   (0.56)
1996*                 10.88         0.28           (0.42)         (0.14)         (0.28)        --                   (0.28)
Ohio Series
1991(b)                9.60         0.53            0.25           0.78          (0.53)        --                   (0.53)
1992                   9.85         0.66            0.41           1.07          (0.66)      (0.01)                 (0.67)
1993                  10.25         0.60            0.72           1.32          (0.60)        --                   (0.60)
1994                  10.97         0.55           (1.43)         (0.88)         (0.55)      (0.12)                 (0.67)
1995                   9.42         0.56            1.38           1.94          (0.56)        --                   (0.56)
1996*                 10.80         0.28           (0.39)         (0.11)         (0.28)        --                   (0.28)
      Pennsylvania Series
1991(b)                9.60         0.53            0.30           0.83          (0.53)        --                   (0.53)
1992                   9.90         0.66            0.44           1.10          (0.66)        --                   (0.66)
1993                  10.34         0.61            0.67           1.28          (0.61)        --                   (0.61)
1994                  11.01         0.56           (1.39)         (0.83)         (0.56)      (0.06)                 (0.62)
1995                   9.56         0.55            1.29           1.84          (0.55)        --                   (0.55)
1996*                 10.85         0.28           (0.37)         (0.09)         (0.28)        --                   (0.28)
</TABLE>

- ------------------
   (b)  January 15, 1991 (commencement of operations) to November 30, 1991.
    *   For the six months ended May 31, 1996 (unaudited).

                      See Notes to Financial Statements




         
<PAGE>



<TABLE>
<CAPTION>
                                        RATIOS TO AVERAGE NET ASSETS   RATIOS TO AVERAGE NET ASSETS
                                        (AFTER EXPENSES WERE ASSUMED  (BEFORE EXPENSES WERE ASSUMED)++
 NET ASSET                NET ASSETS    -----------------------------  ----------------------------
   VALUE        TOTAL       END OF                          NET                         NET          PORTFOLIO
  END OF     INVESTMENT     PERIOD                       INVESTMENT                  INVESTMENT       TURNOVER
 PERIOD        RETURN+     (000'S)          EXPENSES       INCOME       EXPENSES      INCOME            RATE
- ---------    ----------  ------------      -----------  ------------  ------------  --------------  ------------
<S>          <C>           <C>           <C>             <C>              <C>            <C>            <C>
   $ 9.79      $ 7.42(1)      $ 3,131        0.15%(2)         6.04%(2)      2.50%(2)      2.87%(2)       4%(1)
    10.11        9.91           6,420        0.14             6.16          1.46          4.85          23
    10.78       12.64          11,538        0.48             5.39          1.04          4.83           8
     9.28       (8.42)          9,793        0.50             5.41          0.91          5.00          14
    10.61       20.60          11,230        0.50(4)++        5.35          0.98          4.88           3
    10.29       (0.44)(1)      10,217        0.48(2)(4)++     5.24(2)       1.02(2)       4.71(2)       -- (1)

     9.95        9.59(1)       15,812        0.15(2)          6.43(2)       1.21(2)       5.36(2)       36(1)
    10.35       11.34          32,123        0.15             6.36          0.79          5.71          19
    10.94       12.03          54,499        0.48             5.41          0.69          5.20           7
     9.47       (7.96)         45,497        0.64             5.38          0.65          5.37           6
    10.73       19.60          47,889        0.67(4)          5.42          0.67          5.42          14
    10.32       (1.26)(1)      44,735        0.66(2)(4)       5.26(2)       0.66(2)       5.26(2)        2(1)

    10.06       10.73(1)        3,976        0.15(2)          6.44(2)       2.22(2)       4.37(2)       51(1)
    10.34       10.35           9,604        0.15             6.45          1.23          5.37          21
    11.03       12.91          15,955        0.48             5.61          0.88          5.21          11
     9.46       (8.96)         14,522        0.50             5.48          0.82          5.16          14
    10.88       21.40          14,388        0.50(4)++        5.43          0.85          5.09          24
    10.46       (1.29)(1)      13,538        0.47(2)(4)++     5.27(2)       0.88(2)       4.87(2)        4(1)

     9.85        8.35(1)        6,267        0.15(2)          6.38(2)       2.04(2)       4.48(2)       22(1)
    10.25       11.12          13,686        0.15             6.41          1.01          5.56          23
    10.97       13.19          24,849        0.48             5.45          0.78          5.14          20
     9.42       (8.34)         20,693        0.50             5.31          0.71          5.10          18
    10.80       21.02          23,104        0.50(4)++        5.42          0.77          5.16          19
    10.41       (1.07)(1)      21,978        0.50(2)(4)++     5.20(2)       0.78(2)       4.92(2)       21(1)

     9.90        8.77(1)       12,147        0.15(2)          6.46(2)       1.54(2)       5.07(2)       12(1)
    10.34       11.47          31,509        0.15             6.31          0.81          5.65           3
    11.01       12.64          53,378        0.48             5.54          0.68          5.33           5
     9.56       (7.84)         47,557        0.64             5.37          0.66          5.35          19
    10.85       19.65          53,935        0.66(4)          5.29          0.66          5.29           8
    10.48       (0.89)(1)      48,855        0.67(2)(4)       5.15(2)       0.67(2)       5.15(2)       -- (1)
</TABLE>

- -----------------
   +    Does not reflect the deduction of sales load. Calculated based on the
        net asset value as of the last business day of the period.
   ++   After application of the Fund's expense limitation.
   (1)  Not annualized.
   (2)  Annualized.
   (4)  The above expense ratios reflect the effect for gross-up of custody
        cash credits for the Minnesota, New Jersey, New York, Ohio and
        Pennsylvania Series of 0.01%, 0.01%, 0.01%, 0.01% and 0.01%,
        respectively.
   ++   After application of the Investment Manager's voluntary waiver.




         
<PAGE>

TRUSTEES
Michael Bozic
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire
Dr. Manuel H. Johnson
Michael E. Nugent
Philip J. Purcell
John L. Schroeder

OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive Officer

Sheldon Curtis
Vice President, Secretary and General Counsel

James F. Willison
Vice President

Thomas F. Caloia
Treasurer

TRANSFER AGENT
Dean Witter Trust Company
Harborside Financial Center - Plaza Two
Jersey City, New Jersey 07311

INDEPENDENT ACCOUNTANTS
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036

INVESTMENT MANAGER
Dean Witter InterCapital Inc.
Two World Trade Center
New York, New York 10048

The financial statements included herein have been taken from the records of
the Fund without examination by the independent accountants and accordingly
they do not express an opinion thereon.

This report is submitted for the general information of shareholders of the
Fund. For more detailed information about the Fund, its officers and
trustees, fees, expenses and other pertinent information, please see the
prospectus of the Fund.

This report is not authorized for distribution to prospective investors in
the Fund unless preceded or accompanied by an effective prospectus.

                                 Dean Witter
                            Multi-State Municipal
                                 Series Trust


                              Semiannual Report
                                May 31, 1996









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