BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC
N-30D, 1998-12-30
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- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                         ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISER
- --------------------------------------------------------------------------------
                                                               November 30, 1998









Dear Shareholders:

     Over  the  past  twelve months, U.S. Treasury securities have experienced a
strong  rally,  as  investors sought a safe haven from global market turmoil and
the  Federal  Reserve  continued  to  cut  interest rates. Other segments of the
fixed  income  market have lagged behind Treasuries, but still produced positive
returns  since  our  last  report.  We  anticipate that the Federal Reserve will
remain  prepared  to  combat  any signs of a credit crunch through interest rate
cuts,  and  given the unstable economic situation in Brazil, the Fed likely will
retain a loosening bias.

     Despite  previous  worries  of  a  second  half  slowdown in 1998, the U.S.
economy  continues  to  expand  rapidly.  Third  quarter  GDP  registered a 3.3%
annualized  growth  rate,  supported by strong consumer spending. This momentum,
however,  may  not  continue  as  briskly  into  the  new  year, based on weaker
corporate  profits  and  a  loosening  of  the  labor  markets.  Already,  major
corporations have warned of slower profit growth and announced major layoffs.

     This  report  contains  detailed  market  and  portfolio  strategy  by your
Trust's  managers  in addition to the Trust's audited financial statements and a
detailed  portfolio  list  of  the  portfolio's  holdings. We thank you for your
continued  investment  in  the Trust and look forward to serving your investment
needs in the future.


Sincerely,


/s/ LAURENCE D. FINK     /s/ RALPH L. SCHLOSSTEIN
- --------------------     ------------------------

Laurence D. Fink         Ralph L. Schlosstein
Chairman                 President



                                       1


<PAGE>

                                                              November 30, 1998




Dear Shareholder:

     We  are  pleased  to present the annual report for The BlackRock Investment
Quality  Municipal  Trust  Inc.  ("the Trust") for the fiscal year ended October
31,  1998.  We  would  like to take this opportunity to review the Trust's stock
price  and  net  asset  value  (NAV)  performance, summarize developments in the
fixed income markets and discuss recent portfolio management activity.

     The  Trust  is  a  diversified, actively managed closed-end bond fund whose
shares  are  traded  on  the New York Stock Exchange under the symbol "BKN". The
Trust's  investment  objective  is to provide high current income that is exempt
from  regular  Federal  income  tax consistent with the preservation of capital.
The  Trust  seeks  to  achieve  this  objective by investing in investment grade
(rated  "AAA"  to  "BBB"  by  a  major  rating  agency or of equivalent quality)
tax-exempt  general  obligation  and  revenue  bonds  issued by city, county and
state municipalities throughout the United States.

     The  table  below summarizes the changes in the Trust's stock price and net
asset value over the past year:



                       ------------------------------------------------
<TABLE>
<CAPTION>
<S>                      <C>           <C>          <C>         <C>          <C>
                            10/31/98     10/31/97      CHANGE       HIGH          LOW
 STOCK PRICE             $ 15.4375     $ 13.375     15.42%      $ 15.625     $ 13.3125
 NET ASSET VALUE (NAV)   $ 15.78       $ 15.32       3.00%      $ 16.05      $ 15.21
</TABLE>

THE FIXED INCOME MARKETS

     The  first  half  of  the  Trust's  fiscal  year  was  characterized by the
positive  momentum  and  bull  market trend that brought Treasury yields towards
historic  lows.  The  low Treasury yields were due to budget surplus projections
as  well  as  the  Fed's decision to move from a tightening to a neutral policy.
The  positive economic momentum throughout the first half of the fiscal year was
strengthened  by  unseasonably  warm  weather  that  led  to  increased consumer
spending  and job gains, and a less than expected impact on trade from the Asian
financial crisis.

     GDP  growth  measured  at  a  very strong 5% for the first quarter of 1998;
however,  signs  of  a  slowdown became evident when economic data for April and
May began to lag.

     The   second   half   of   the  trust's  fiscal  year  witnessed  virtually
unparalleled  market  turbulence.  During the second quarter of 1998, GDP growth
faltered  to  a  1.8%  rate due to slower output and an increasing trade deficit
created  by  a  strong  U.S. dollar. Although consumers continued their spending
domestically,  demand  for  U.S. goods abroad faltered, as the strong dollar and
weakness  overseas, especially Asia, drove prices for U.S. goods higher relative
to foreign goods.

     In  the  Trust's  final  quarter, U.S. GDP growth rebounded to a 3.3% pace;
however,  the  instability  in global financial markets began to rattle investor
confidence.  The  devaluation  of  the  Russian ruble and the fear of a possible
devaluation  of  the  Brazilian  currency  caused  a  flight-to-quality  to U.S.
Treasuries.  Spread sectors widened dramatically as a result of the sell-off. In
addition,  the  global  financial  markets  witnessed a credit crunch where even
higher-grade   securities   were  affected.  This  dramatic  shift  of  investor
sentiment culminated in the near collapse of a prominent hedge fund.

     The  Treasury  market rally pushed Treasury yields to historic levels below
the  5%  barrier.  In  response  to the financial fragility in the third quarter
1998,  the  Fed  eased  interest  rates on September 29, 1998 by 25 basis points
("bps")  and  again  on  October  15,  in  an  unusual between-meetings move. On
November 17, the Fed eased interest rates again by 25bps.


                                       2


<PAGE>

     The  municipal bond market, represented by the Lehman Municipal Bond Index,
posted  a  total return of 8.03% for the 12 month period ended October 31, 1998,
a  taxable  equivalent  return  of 11.52% for an individual in the 39.6% Federal
Tax  income  bracket, outperforming the domestic taxable investment grade market
(measured  by  the  Lehman  Aggregate  Index),  which returned 9.33%. Currently,
municipal  securities  are  at their most attractive valuation versus Treasuries
in  over  a  decade.  The overwhelming factor that has driven municipals to this
relationship  has been enormous new issuance supply. In the first three quarters
of  1998,  new  issue  volume totaled $214 billion, a 37% increase over the same
period  last  year.  However,  the  rapid decline in Treasury interest rates has
actually  begun  to  reduce  the pace of new issue volume, as savings associated
with  refunding  deals  become increasingly negligible due to a technical factor
called  "negative  arbitrage".  This  reduction  in  supply  when  coupled  with
attractive  valuations  versus  Treasuries sets the municipal market up with the
opportunity for significant total return performance going forward.

THE TRUST'S PORTFOLIO AND INVESTMENT STRATEGY

     The  Trust's portfolio is actively managed to diversify exposure to various
sectors,  issuers,  revenue  sources  and security types. BlackRock's investment
strategy  emphasizes  a  relative  value  approach,  which  allows  the Trust to
capitalize  upon  changing  market  conditions  by  rotating  municipal sectors,
credits and coupons.

     Additionally,  the  Trust employs leverage at about 35% of total net assets
to  enhance  its income by borrowing at short term municipal rates and investing
the  proceeds  in longer maturity issues which have higher yields. The degree to
which  the  Trust can benefit from its use of leverage may affect its ability to
pay  high  monthly  income.  Over  the  past  twelve months, the Federal Reserve
loosened  monetary  policy  by  lowering short term rates by 25bps in September,
October  and  again  in November to 4.75%. Typically, short term municipal rates
(which  determine the Trust's borrowing costs) are approximately 65% of Treasury
rates.  Accordingly  the  Trust's  cost of leverage decreased as a result of the
Fed's Action.

     The  main  portfolio  management  theme in the Trust over the past year has
been  to  take  advantage  of  narrowing credit spreads between higher and lower
rated  bonds.  Historically,  lower  rated  bonds  yield significantly more than
higher   rated  bonds  to  compensate  the  investor  for  taking  on  a  higher
probability  of  default.  Over the past year, this yield advantage has narrowed
to  levels  that  we  believe  do  not  pay  investors  enough to purchase lower
credits.  The  Trust's holdings currently emphasize high credit non-callable and
callable  premiums  in  the  10- to 15-year maturity range. Prevailing municipal
market  conditions  do  not  reward investors for extending beyond this maturity
range.

     The  following  charts  compare  the  Trust's  current and October 31, 1997
asset composition and credit quality allocations:

                               SECTOR BREAKDOWN

<TABLE>
<CAPTION>
 SECTOR                             OCTOBER 31, 1998   OCTOBER 31, 1997
<S>                                <C>                <C>
  Transportation                           18%                15%
  City, County & State                     17%                17%
  Industrial & Pollution Control           13%                12%
  Hospital                                 12%                11%
  Power                                     8%                13%
  University/School                         7%                 8%
  Lease Revenue                             6%                 8%
  Tax Revenue                               6%                 4%
  Housing                                   5%                 5%
  Water & Sewer                             5%                 5%
  Resource Recovery                         2%                 1%
  Miscellaneous Revenue                     1%                 1%
</TABLE>


                                       3


<PAGE>


 STANDARD & POOR'S/MOODY'S
       CREDIT RATING        OCTOBER 31, 1998   OCTOBER 31, 1997
           AAA/Aaa                58%                55%
            AA/Aa                 12%                12%
             A/A                  15%                13%
           BBB/Baa                15%                20%


     We  look  forward  to  continuing  to  manage the Trust to benefit from the
opportunities  available  to investors in the investment grade municipal market.
We  thank  you  for  your  investment  and  continued  interest in The BlackRock
Investment  Quality  Municipal  Trust  Inc.  Please  feel  free  to  contact our
marketing  center  at (800) 227-7BFM (7236) if you have specific questions which
were not addressed in this report.



Sincerely,


/s/ ROBERT S. KAPITO                   /s/ KEVIN KLINGERT
- --------------------                   ------------------

Robert S. Kapito                       Kevin Klingert
Vice Chairman and Portfolio Manager    Managing Director and Portfolio Manager
BlackRock Financial Management, Inc.   BlackRock Financial Management, Inc.



                  THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
  Symbol on New York Stock Exchange:                                 BKN
  Initial Offering Date:                                       February 19, 1993
  Closing Stock Price as of 10/31/98:                          $ 15.4375
  Net Asset Value as of 10/31/98:                              $ 15.78
  Yield on Closing Stock Price as of 10/31/98 ($15.4375)1:       5.59%
  Current Monthly Distribution per Share2:                     $  0.0719
  Current Annualized Distribution per Share2:                  $  0.8628

1 Yield  on Closing Stock Price is calculated by dividing the current annualized
  distribution per share by the closing stock price per share.

2 The Distribution is not constant and is subject to change.

                                       4


<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
PORTFOLIO OF INVESTMENTS OCTOBER 31, 1998
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
====================================================================================================================================
                 PRINCIPAL                                                                             OPTION CALL
   RATING*        AMOUNT                                                                               PROVISIONS+        VALUE
 (UNAUDITED)      (OO0)                               DESCRIPTION                                      (UNAUDITED)       (NOTE 1)
====================================================================================================================================
<S>             <C>         <C>                                                                <C>                   <C>
                            LONG-TERM INVESTMENTS-146.8%
                            CALIFORNIA -13.8%
 Aa2            $ 1,220     California Hsg. Fin. Agcy. Rev., Home Mtg.,
                             Ser. C, 5.65%, 8/01/14 .......................................     2/04 at 102          $   1,260,785
                            California St. G.O.,
 A1               5,770      5.00%, 10/01/14 ..............................................    10/07 at 101              5,893,824
 Aa3              2,955      5.25%, 10/01/10 ..............................................    No Opt. Call              3,225,087
 AAA             15,460     Los Angeles Cnty. Asset Leasing Corp. Rev.,
                             5.95%, 12/01/07, AMBAC .......................................    No Opt. Call             17,753,646
                            University of California Rev., Research Fac., Ser. B,
 A+               2,000      6.10%, 9/01/03++ .............................................        N/A                   2,239,000
 A+               3,305      6.20%, 9/01/03++ .............................................        N/A                   3,714,390
 A+               2,000      6.25%, 9/01/03++ .............................................        N/A                   2,252,121
                                                                                                                     -------------
                                                                                                                        36,338,853
                                                                                                                     -------------
                            COLORADO - 12.9%
                            Arapahoe Cnty. Cap. Impvt. Hwy. Rev., Trust Fund, Ser. E,
 AAA              3,100      Zero Coupon, 8/31/04 .........................................    No Opt. Call              2,454,301
                            Denver City & Cnty. Arpt. Rev.,
 Baa1             1,120      Ser. C, 6.65%, 11/15/05 ......................................    11/02 at 102              1,222,558
 Baa1             3,000      Ser. C, 6.50%, 11/15/06 ......................................    11/02 at 102              3,253,680
 Aaa              3,705      Ser. D, 7.00%, 11/15/01++ ...................................        N/A                   4,041,303
 Baa1            14,085      Ser. D, 7.00%, 11/15/25 ......................................    11/01 at 100             14,993,905
                            E-470 Pub. Hwy. Auth. Rev., Ser. B,
 AAA              3,000      Zero Coupon, 9/01/11, MBIA ...................................    No Opt. Call              1,685,220
 AAA             10,000      Zero Coupon, 9/01/18, MBIA ...................................    No Opt. Call              3,686,500
 AAA              2,250      6.90%, 8/31/05 ++ ............................................        N/A                   2,695,230
                                                                                                                     -------------
                                                                                                                        34,032,697
                                                                                                                     -------------
                            CONNECTICUT - 3.6%
 Aa3              8,750     Connecticut St. G.O., Ser. A, 5.50%, 11/15/08 .................    11/03 at 102              9,491,825
                                                                                                                     -------------
                            DISTRICT OF COLUMBIA - 1.9%
                            District of Columbia G.O., Ser. E, CAPMAC,
 AAA              1,830      6.00%, 6/01/09 ...............................................     6/03 at 102              1,981,744
 AAA                 70      6.00%, 6/01/03++ .............................................        N/A                      77,120
 AAA              3,000     Washington D.C. Convention Ctr. Auth. Ded. Tax Rev.,
                             5.25%, 10/01/17, AMBAC .......................................    10/08 at 101              3,054,690
                                                                                                                     -------------
                                                                                                                         5,113,554
                                                                                                                     -------------
                       
                            FLORIDA - 2.4%
 AAA              1,745     Florida Hsg. Fin. Agcy. Rev., Sngl. Fam. Mtg.,
                             Ser. 1994-A, 6.55%, 7/01/14 ..................................     1/05 at 102              1,876,241
 BBB-             4,000     Santa Rosa Bay Bridge Auth. Rev., 6.25%, 7/01/28. .............     7/06 at 102              4,448,400
                                                                                                                     -------------
                                                                                                                         6,324,641
                                                                                                                     -------------
                       
                            GEORGIA - 0.9%
 AAA              2,250     Georgia St. Hsg. & Fin. Auth. Rev., Sngl.
                             Fam. Mtg., Ser. C, 7.00%, 12/01/15, FHA ......................    12/04 at 102              2,436,750
                                                                                                                     -------------
                            ILLINOIS - 8.6%
 AAA              5,050     Chicago Wtr. Rev., 5.25%, 11/01/23, FGIC ......................    11/07 at 102              5,140,849
 AAA              3,000     Cook Cnty. Cap. Impt., 5.875%, 11/15/06, FGIC++.. .............        N/A                   3,393,840
 AAA              4,165     Cook Cnty. G.O., Ser. A, 5.20%, 11/15/08, MBIA ................    11/07 at 101              4,438,057
                            Illinois Edl. Fac. Auth. Rev., Loyola Univ., FGIC,
 AAA              5,000      5.70%, 7/01/03++ .............................................        N/A                   5,353,050
 AAA              4,000      5.45%, 7/01/14 ...............................................     7/03 at 102              4,240,680
                                                                                                                     -------------
                                                                                                                        22,566,476
                                                                                                                     -------------
                       
                            INDIANA - 3.2%
 Baa2             7,595     Indianapolis Arpt. Auth. Rev., Spl. Fac. Fed.
                             Express Corp. Proj., 7.10%, 1/15/17 ..........................     7/04 at 102              8,473,590
                                                                                                                     -------------
                            KENTUCKY - 7.2%
 AAA              2,850     Boone Cnty. P.C.R., 5.50%, 1/01/24, MBIA ......................     1/04 at 102              2,960,637
 AAA             15,000     Kentucky St. Tpke. Auth., Econ. Dev. Road Rev., 
                             5.75%, 7/01/13, AMBAC ........................................     7/03 at 102             16,110,300
                                                                                                                     -------------
                                                                                                                        19,070,937
                                                                                                                     -------------
                       
                            LOUISIANA - 7.3%
 AAA             14,400     Louisiana Pub. Fac. Auth. Hosp. Rev.,
                             Our Lady of the Lake Regl. Med. Ctr.,
                            5.90%, 12/01/03, FSA++ ........................................        N/A                  15,950,736
 AAA              2,860     Louisiana Stadium & Expo Dist., Htl. Ocpcy. Tax,
                             6.00%, 7/01/16, FGIC .........................................     7/06 at 102              3,319,931
                                                                                                                     -------------
                                                                                                                        19,170,667
                                                                                                                     -------------
</TABLE>

                       See Notes to Financial Statements.

                                       5


<PAGE>


<TABLE>
<CAPTION>
====================================================================================================================================
                 PRINCIPAL                                                                             OPTION CALL
   RATING*        AMOUNT                                                                               PROVISIONS+        VALUE
 (UNAUDITED)      (OO0)                               DESCRIPTION                                      (UNAUDITED)       (NOTE 1)
====================================================================================================================================
<S>             <C>         <C>                                                                <C>                   <C>
                            MARYLAND - 5.4%
 Aa2            $ 9,940     Maryland St. Dept. Hsg. & Comn. Dev. Admin., Sngl.
                             Fam. Prog., Ser. 2, 6.55%, 4/01/26............................     4/05 at 102          $  10,668,105
 AAA              3,175     Northeast Waste Disp. Auth. Rev., Sld. Wst., Montgomery
                             Cnty. Res. Rec. Proj., Ser. A, 6.30%, 7/01/16, MBIA ..........     7/03 at 102              3,475,641
                                                                                                                     -------------
                                                                                                                        14,143,746
                                                                                                                     -------------
                        
                            MASSACHUSETTS - 2.4%
 AAA              6,500     Massachusetts St. Hlth.& Edl. Fac. Auth. Rev.,
                             Hallmark Hlth. Sys., Ser. A., 5.00% 7/01/21, FSA .............     7/08 at 101              6,370,455
                                                                                                                     -------------
                            MICHIGAN - 3.7%
 AAA              4,000     Greater Detroit Res. Rec. Auth. Rev., Ser. A,
                             6.25%, 12/13/08, AMBAC .......................................    No Opt. Call              4,628,800
 AAA              5,000     River Rouge Sch. Dist., 5.625%, 5/01/22, FSA ..................  5/03 at 101.50              5,246,150
                                                                                                                     -------------
                                                                                                                         9,874,950
                                                                                                                     -------------
                        
                            MONTANA - 1.7%
                            Lake of the Ozarks Cmnty. Brdg. Corp. Brdg. Sys. Rev.,
 NR               2,000      5.25%, 12/01/14 ..............................................    12/08 at 102              1,973,520
 NR               2,500      5.25%, 12/01/26 ..............................................    12/08 at 102              2,387,550
                                                                                                                     -------------
                                                                                                                         4,361,070
                                                                                                                     -------------
                        
                            NEVADA - 1.5%
 AAA              3,750     Washoe Cnty. Arpt. Auth., Arpt. Sys. Impvt. Rev.,
                             Ser. B, 5.80%, 7/01/09, MBIA .................................     7/03 at 102              4,060,012
                                                                                                                     -------------
                            NEW YORK - 23.6%
 AAA              5,400     Metropolitan Trans. Auth. Commuter Fac. Rev., Ser. A,
                             5.75%, 7/01/21, MBIA .........................................   7/07 at 101.5              5,874,768
                            New York City G.O.,
 A3               4,140      Ser. A, 6.00%, 8/01/05 .......................................    No Opt. Call              4,565,550
 AAA              3,000      Ser. D, 5.60%, 11/01/05, AMBAC ...............................    No Opt. Call              3,276,930
 A3               7,000      Ser. E, 6.50%, 2/15/06 .......................................    No Opt. Call              7,958,650
 A-               6,160      Ser. H, 7.20%, 2/01/02++, ....................................        N/A                   6,894,457
 A3                 840      Ser. H, 7.20%, 2/01/13 .......................................  2/02 at 101.50                926,033
                            New York City Ind. Dev. Agcy. Spec. Fac. Rev., Term.
                             One Group Assoc. Proj.,
 A                4,000      6.00%, 1/01/08 ...............................................     1/04 at 102              4,295,320
 A                1,000      6.00%, 1/01/15 ...............................................     1/04 at 102              1,060,080
 AAA              9,375     New York City Mun. Wtr. Fin. Auth., Wtr. & Swr.
                             Rev., Ser. A, 5.125%, 6/15/22, AMBAC .........................     6/07 at 101              9,444,188
 AA               4,000     New York City Transitional Fin. Auth. Rev.,
                             Ser. C, 4.75%, 5/01/23 .......................................     5/08 at 102              3,843,720
 A3               3,000     New York St. Dorm. Auth. Rev., St. Univ. Edl. Fac.,
                             Ser. B, 6.10%, 5/15/04++ .....................................        N/A                   3,373,920
 A-               1,955     New York St. Hsg. Fin. Agcy., Hlth. Fac. of
                             New York City, Ser. A, 6.375%, 11/04/04 ......................    No Opt. Call              2,167,000
 AAA              5,000     New York St. Med. Care Fac. Rev., New York Hosp.,
                             Ser. A, 6.60%, 2/15/05++, AMBAC ..............................        N/A                   5,808,450
 AAA              2,620     New York St. Urban Dev. Corp. Rev., Correctional Fac.,
                             5.625%, 1/01/07, AMBAC .......................................     1/03 at 102              2,823,679
                                                                                                                     -------------
                                                                                                                        62,312,745
                                                                                                                     -------------
                        
                            NORTH CAROLINA - 2.3%
 AAA              5,000     North Carolina Eastn. Mun. Pwr. Agcy. Rev.,
                             Ser. B, 7.00%, 1/01/08, CAPMAC ...............................    No Opt. Call              5,985,500
                                                                                                                     -------------
                            OHIO - 0.7%
 NR                 500     Cleveland Cuyahoga Cnty. Port Auth. Rev.,
                             Port Dev. Proj., 6.00%, 3/01/07 ..............................    No Opt. Call                511,200
 AAA              1,220     Ohio St. Higher Edl. Fac. Com., Univ. Dayton Proj.,
                             5.35%, 12/01/17, AMBAC .......................................    12/07 at 101              1,283,489
                                                                                                                     -------------
                                                                                                                         1,794,689
                                                                                                                     -------------
                        
                            PENNSYLVANIA - 12.2%
 AAA              8,000     Delaware Valley Regl. Fin. Auth. Ser. A,
                             5.50%, 8/01/28, AMBAC ........................................    No Opt. Call              8,631,280
 AAA             10,100     Lehigh Cnty. Gen. Purpose Auth. Rev., St. Lukes Hosp.
                             Bethlehem Proj., 5.50%, 11/15/13, AMBAC ......................    11/03 at 102             10,609,444
 AAA              7,000     Montgomery Cnty. Ed. & Hlth. Care Auth., Holy Redeemer,
                             5.25%, 10/01/23, AMBAC .......................................    10/07 at 101              7,119,000
 AAA              4,000     Pennsylvania Intergovernmental Coop. Auth., Spl.
                             Tax Rev., Philadelphia Fdg. Prog., 5.50%, 6/15/20, FGIC ......     6/06 at 100              4,161,240
 AAA              1,500     Pennsylvania St. G.O., First Ser., 5.375%, 5/15/09, FGIC ......  5/06 at 101.50              1,616,220
                                                                                                                     -------------
                                                                                                                        32,137,184
                                                                                                                     -------------
                        
                            RHODE ISLAND - 2.3%
 AA+              3,640     Rhode Island Hsg. & Mtg. Fin., Homeownership Oppty., Ser. 15-B,
                             6.75%, 10/01/17 ..............................................     4/04 at 102              3,913,072
 AAA              2,000     Rhode Island St. Hlth. & Edu. Bldg. Corp. Rev.,
                             Hosp. Fin., 5.50%, 5/15/16, MBIA .............................     5/07 at 102              2,110,440
                                                                                                                     -------------
                                                                                                                         6,023,512
                                                                                                                     -------------
                        
                            TENNESSEE - 3.3%
 A2               7,800     Maury Cnty. Ind. Dev. Brd., P.C.R.,
                             Saturn Corp. Proj., 6.50%, 9/01/24 ...........................     9/04 at 102              8,654,880
                                                                                                                     -------------

</TABLE>

                       See Notes to Financial Statements.
                                       6


<PAGE>


<TABLE>
<CAPTION>
====================================================================================================================================
                 PRINCIPAL                                                                             OPTION CALL
   RATING*        AMOUNT                                                                               PROVISIONS+        VALUE
 (UNAUDITED)      (OO0)                               DESCRIPTION                                      (UNAUDITED)       (NOTE 1)
====================================================================================================================================
<S>             <C>         <C>                                                                <C>                   <C>
                            TEXAS - 6.0%
 BBB+           $ 9,800     Brazos River Auth., P.C.R., Coll-Texas Utilities Co.
                             Proj., 8.25%, 1/01/19 ........................................     1/99 at 102          $  10,054,310
 A+               2,500     Port of Bay City Auth. Matagorda Cnty. Rev.,
                             Hoechst Celanese Corp. Proj., 6.50%, 5/01/26 .................     5/06 at 102              2,773,300
 Baa1             2,640     Sabine River Auth., P.C.R., Coll-Texas Utilities Elec. Proj.,
                             Ser. B, 8.25%, 10/01/20 ......................................    10/00 at 102              2,867,937
                                                                                                                     -------------
                                                                                                                        15,695,547
                                                                                                                     -------------
                        
                            UTAH - 6.6%
 AAA              4,450     Intermountain Pwr. Agcy. Rev., Pwr. Supply,
                             Ser. F, 5.00%, 7/01/13, AMBAC ................................    No Opt. Call              4,450,267
 A1               1,800     Intermountain Pwr. Agcy. Rev., Fst. Crossover,
                             Ser. 86 B, 5.00%, 7/01/16 ....................................    No Opt. Call              1,770,660
 BBB             11,250     Tooele Cnty. Hazardous Wst. Trmt. Rev.,
                             Union Pacific Proj., 5.70%, 11/01/26 .........................     4/08 at 102             11,142,563
                                                                                                                     -------------
                                                                                                                        17,363,490
                                                                                                                     -------------
                        
                            WASHINGTON - 11.7%
 Aa               6,900     Seattle G.O., 5.40%, 1/01/08 ..................................     1/03 at 102              7,306,341
 AA               2,650     Seattle Wtr. Sys. Rev., 5.50%, 6/01/18 ........................     6/03 at 102              2,727,539
 AA+              4,000     Washington St. G.O., Ser. A, 5.375%, 7/01/21 ..................     7/06 at 100              4,104,560
                            Washington St. Pub. Pwr. Supply Sys. Rev.,
 AAA             13,395      Nuclear Proj. No. 1, 5.75%, 7/01/11, MBIA ....................     7/06 at 102             14,633,234
 AAA              2,000      Nuclear Proj. No. 2, 5.55%, 7/01/10, FGIC ....................     7/03 at 102              2,114,540
                                                                                                                     -------------
                                                                                                                        30,886,214
                                                                                                                     -------------
                        
                            WISCONSIN - 1.6%
 AAA              4,000     Wisconsin St. Hlth. & Edl. Fac. Auth. Rev., Marquette Univ.,
                             5.50%, 6/01/18, MBIA .........................................     6/08 at 102              4,161,840
                                                                                                                     -------------
                            Total Long-Term Investments (cost $360,077,039)................                            386,845,824
                                                                                                                     -------------
                            TOTAL INVESTMENTS - 146.8% (cost $360,077,039).................                            386,845,824
                            Other assets in excess of liabilities - 2.5% ..................                              6,744,128
                            Liquidation value of preferred stock - (49.3)% ................                           (130,000,000)
                                                                                                                     -------------
                            NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS - 100% ...........                          $ 263,589,952
                                                                                                                     =============
</TABLE>


- ----------
 * Using the higher of Standard & Poor's, Moody's or Fitch's rating.
 + Option  call provisions: date (month/year) and price of the earliest call or
   redemption.  There  may  be  other call provisions at varying prices at later
   dates.
++ This bond is prerefunded. See glossary for definition.




<TABLE>
<CAPTION>
===============================================================================================================
                                     THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:
<S>        <C>                                                 <C>      <C>
  AMBAC    - American Municipal Bond Assurance Corporation     FSA      - Financial Security Assurance
  CAPMAC   - Capital Markets Assurance Corporation             G.O.     - General Obligation Bond
  FGIC     - Financial Guaranty Insurance Company              MBIA     - Municipal Bond Insurance Association
  FHA      - Federal Housing Administration                    P.C.R.   - Pollution Control Revenue
</TABLE>

                       See Notes to Financial Statements.
                                       7


<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT
QUALITY MUNICIPAL TRUST INC.
STATEMENT OF ASSETS AND LIABILITIES
OCTOBER 31, 1998
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                      <C>
ASSETS
Investments, at value (cost $360,077,039) (Note 1) .    $ 386,845,824
Cash .................................................      4,631,467
Interest receivable ..................................      6,817,001
Other assets .........................................          9,515
                                                        -------------
                                                          398,303,807
                                                        -------------
LIABILITIES
Payable for investments purchased ....................      4,190,060
Dividends payable-preferred stock ....................        138,906
Investment advisory fee payable (Note 2) .............        115,987
Administration fee payable (Note 2) ..................         49,709
Other accrued expenses ...............................        219,193
                                                        -------------
                                                            4,713,855
                                                        -------------
NET INVESTMENT ASSETS ................................   $393,589,952
                                                        =============
Net investment assets were comprised of:
 Common stock:
  Par value (Note 4) .................................  $     167,071
  Paid-in capital in excess of par ...................    232,077,765
 Preferred stock (Note 4) ............................    130,000,000
                                                        -------------
                                                          362,244,836
 Undistributed net investment income .................      1,449,281
 Accumulated net realized gain .......................      3,127,050
 Net unrealized appreciation .........................     26,768,785
                                                        -------------
Net investment assets, October 31, 1998 ..............  $ 393,589,952
                                                        =============
Net assets applicable to common shareholders .........  $ 263,589,952
                                                        =============
Net asset value per common share:
  ($263,589,952 [div] 16,707,093 shares of
  common stock issued and outstanding) ...............  $       15.78
                                                        =============
</TABLE>



- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT
QUALITY MUNICIPAL TRUST INC.
STATEMENT OF OPERATIONS
YEAR ENDED OCTOBER 31, 1998
- --------------------------------------------------------------------------------

<TABLE>
<S>                                          <C>
NET INVESTMENT INCOME
Income
  Interest and discount earned ...........   $20,724,998
                                             -----------
Expenses
  Investment advisory ....................     1,361,169
  Administration .........................       583,358
  Auction agent ..........................       345,000
  Custodian ..............................       107,500
  Reports to shareholders ................        69,000
  Directors ..............................        64,000
  Audit ..................................        41,000
  Transfer agent .........................        23,000
  Legal ..................................         6,000
  Miscellaneous ..........................        92,838
                                             -----------
  Total expenses .........................     2,692,865
                                             -----------
Net investment income ....................    18,032,133
                                             -----------

REALIZED AND UNREALIZED GAIN ON
 INVESTMENTS (NOTE 3)
Net realized gain on investments .........     3,208,243
Net change in unrealized appreciation
  on investments .........................     8,422,329
                                             -----------
Net gain on investments ..................    11,630,572
                                             -----------

NET INCREASE IN NET INVESTMENT ASSETS
 RESULTING FROM OPERATIONS ...............   $29,662,705
                                             ===========
</TABLE>



See Notes to Financial Statements.
                                       8


<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                   YEAR ENDED OCTOBER 31,
                                                                             -----------------------------------
                                                                                   1998               1997
                                                                             ----------------   ----------------
<S>                                                                          <C>                <C>
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
Operations:
 Net investment income ...................................................    $  18,032,133      $  18,096,994
 Net realized gain on investments ........................................        3,208,243          4,449,946
 Net change in unrealized appreciation on investments ....................        8,422,329          8,949,932
                                                                              -------------      -------------
 Net increase in net investment assets resulting from operations .........       29,662,705         31,496,872
Dividends and distributions:
 To common shareholders from net investment income .......................      (13,554,216)       (13,100,478)
 To common shareholders from net realized gain on investments ............       (3,343,299)          (322,193)
 To preferred shareholders from net investment income ....................       (3,967,577)        (4,591,740)
 To preferred shareholders from net realized gain on investments .........       (1,133,378)          (104,104)
                                                                              -------------      -------------
 Total dividends and distributions .......................................      (21,998,470)       (18,118,515)
                                                                              -------------      -------------
  Total increase .........................................................        7,664,235         13,378,357
NET INVESTMENT ASSETS
Beginning of year ........................................................      385,925,717        372,547,360
                                                                              -------------      -------------
End of year ..............................................................    $ 393,589,952      $ 385,925,717
                                                                              =============      =============
</TABLE>



                       See Notes to Financial Statements.
                                       9


<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                     YEAR ENDED OCTOBER 31,
                                                                    -------------------------
                                                                        1998         1997
PER SHARE OPERATING PERFORMANCE:                                    ------------ ------------
<S>                                                                   <C>           <C>
Net asset value, beginning of year ................................   $  15.32      $ 14.52
                                                                      --------      -------
Net investment income .............................................       1.08         1.08
Net realized and unrealized gain (loss)
 on investments ...................................................       0.70         0.80
                                                                      --------      -------
Net increase (decrease) from investment operations ................       1.78         1.88
                                                                      --------      -------
Dividends and Distributions:
Dividends from net investment income to:
 Common shareholders ..............................................     ( 0.81)      ( 0.78)
 Preferred shareholders ...........................................     ( 0.24)      ( 0.27)
Distributions from net realized gain on
  investments to:
 Common shareholders ..............................................     ( 0.20)      ( 0.02)
 Preferred shareholders ...........................................     ( 0.07)      ( 0.01)
                                                                      --------     --------
  Total dividends and distributions ...............................     ( 1.32)      ( 1.08)
                                                                      --------     --------
Capital charge with respect to issuance
 of shares ........................................................          -            -
                                                                      --------     --------
Net asset value, end of year* .....................................    $ 15.78      $ 15.32
                                                                      ========     ========
Per share market value, end of year* ..............................    $ 15.44      $ 13.38
                                                                      ========     ========
TOTAL INVESTMENT RETURN+ ..........................................      22.07%       14.20%
                                                                      ========     ========
RATIOS TO AVERAGE NET ASSETS
 OF COMMON SHAREHOLDERS:++
Expenses ..........................................................       1.04%        1.07%
Net investment income before preferred stock dividends ............       6.95%        7.42%
Preferred stock dividends .........................................       1.53%        1.88%
Net investment income available to common
 shareholders .....................................................       5.42%        5.54%
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ..........   $259,280     $243,947
Portfolio turnover ................................................         46%         160%
Net assets of common shareholders, end of year (in thousands) .....   $263,590     $255,926
Preferred stock outstanding (in thousands) ........................   $130,000     $130,000
Asset coverage per share of preferred stock,
 end of year# .....................................................   $ 75,690     $ 74,241
</TABLE>

<TABLE>
<CAPTION>
                                                                            YEAR ENDED OCTOBER 31,
                                                                    ---------------------------------------
                                                                        1996         1995          1994
PER SHARE OPERATING PERFORMANCE:                                    ------------ ------------ -------------
<S>                                                                  <C>          <C>          <C>
Net asset value, beginning of year ................................   $ 14.18      $ 12.05      $  14.76
                                                                      -------      -------      --------
Net investment income .............................................      1.09         1.10          1.06
Net realized and unrealized gain (loss)
 on investments ...................................................      0.34         2.16         (2,64)
                                                                      -------      -------      --------
Net increase (decrease) from investment operations ................      1.43         3.26         (1.58)
                                                                      -------      -------      --------
Dividends and Distributions:
Dividends from net investment income to:
 Common shareholders ..............................................      (0.79)       (0.82)       (0.90)
 Preferred shareholders ...........................................      (0.28)       (0.31)       (0.21)
Distributions from net realized gain on
  investments to:
 Common shareholders ..............................................      (0.01)          --           --
 Preferred shareholders ...........................................      (0.01)          --           --
                                                                      --------     --------     --------
  Total dividends and distributions ...............................      (1.09)       (1.13)       (1.11)
                                                                      --------     --------     --------
Capital charge with respect to issuance
 of shares ........................................................         --           --        (0.02)
                                                                      --------     --------     --------
Net asset value, end of year* .....................................   $  14.52     $  14.18     $  12.05
                                                                      ========     ========     ========
Per share market value, end of year* ..............................   $  12.44     $  12.00     $  10.38
                                                                      ========     ========     ========
TOTAL INVESTMENT RETURN+ ..........................................      10.41%       24.01%     (20.98%)
                                                                      ========     ========     ========
RATIOS TO AVERAGE NET ASSETS
 OF COMMON SHAREHOLDERS:++
Expenses ..........................................................       1.12%        1.16%        1.14%
Net investment income before preferred stock dividends ............       7.57%        8.36%        7.80%
Preferred stock dividends .........................................       1.97%        2.34%        1.55%
Net investment income available to common
 shareholders .....................................................       5.60%        6.02%        6.25%
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ..........   $238,540     $219,740     $226,935
Portfolio turnover ................................................        164%         182%         210%
Net assets of common shareholders, end of year (in thousands) .....   $242,547     $236,990     $201,343
Preferred stock outstanding (in thousands) ........................   $130,000     $130,000     $130,000
Asset coverage per share of preferred stock,
 end of year# .....................................................   $ 71,644     $ 70,575     $127,440
</TABLE>

- ----------
 * Net  asset  value  and  market value are published in THE WALL STREET JOURNAL
   each Monday.
 # A stock split occurred on July 24, 1995 (Note 4).
 + Total investment return is calculated  assuming a purchase of common stock at
   the current  market  price on the first day and a sale at the current  market
   price on the last day of the year reported.  Dividends and distributions,  if
   any, are assumed for purposes of this calculation, to be reinvested at prices
   obtained  under the Trust's  dividend  reinvestment  plan.  Total  investment
   return does not reflect brokerage commissions.
++ Ratios are calculated on the basis of income and expenses  applicable to both
   the common and preferred  stock  relative to the average net assets of common
   shareholders.  Ratios do not  reflect  the  effect of  dividend  payments  to
   preferred shareholders.


The  information  above represents the audited operating performance for a share
of  common  stock  outstanding,  total  investment return, ratios to average net
assets  and  other  supplemental  data for the years indicated. This information
has  been  determined based upon financial information provided in the financial
statements and market value data for the Trust's shares.


                       See Notes to Financial Statements.
                                       10


<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK INVESTMENT
QUALITY MUNICIPAL TRUST INC.
NOTES TO FINANCIAL STATEMENTS
- --------------------------------------------------------------------------------

NOTE 1. ORGANIZATION & ACCOUNTING POLICIES

     The BlackRock  Investment  Quality  Municipal  Trust Inc. (the "Trust") was
organized  in  Maryland  on  November  19,  1992  as a  diversified,  closed-end
management  investment company.  The Trust's investment objective is to manage a
diversified  portfolio of high-quality  securities  while providing high current
income exempt from regular Federal income tax consistent  with the  preservation
of capital.  The ability of issuers of debt securities held by the Trust to meet
their  obligations  may be  affected  by  economic  developments  in a  specific
industry  or  region.  No  assurance  can be given that the  Trust's  investment
objective will be achieved.

     The following is a summary of significant  accounting  policies followed by
the Trust.

SECURITIES  VALUATION: Municipal  securities  (including commitments to purchase
such  securities  on  a  "when-issued"  basis) are valued on the basis of prices
provided   by   a  pricing  service  which  uses  information  with  respect  to
transactions  in  bonds,  quotations  from  bond dealers, market transactions in
comparable   securities   and   various   relationships  between  securities  in
determining  values.  Any  securities  or  other  assets  for which such current
market  quotations  are  not  readily  available  are  valued  at  fair value as
determined  in  good faith under procedures established by and under the general
supervision and responsibility of the Trust's Board of Directors.

      Short-term  securities  which  mature  in  more than 60 days are valued at
current  market  quotations.  Short-term  securities  which mature in 60 days or
less  are  valued  at  amortized  cost,  if  their term to maturity from date of
purchase  is 60 days or less, or by amortizing their value on the 61st day prior
to  maturity,  if their original term to maturity from date of purchase exceeded
60 days.

SECURITIES  TRANSACTIONS  AND  INVESTMENT  INCOME:  Securities  transactions are
recorded  on trade date. Realized and unrealized gains and losses are calculated
on  the  identified cost basis. Interest income is recorded on the accrual basis
and  the  Trust  accretes  original  issue  discount  or  amortizes  premium  on
securities purchased using the interest method.

FEDERAL  INCOME  TAXES: It  is  the  Trust's  intention  to continue to meet the
requirements  of  the  Internal  Revenue Code applicable to regulated investment
companies  and  to  distribute  sufficient  net income to shareholders. For this
reason  and  because  substantially  all of the Trust's gross income consists of
tax-exempt interest, no Federal income tax provision is required.

DIVIDENDS   AND   DISTRIBUTIONS: The  Trust  declares  and  pays  dividends  and
distributions  to  common  shareholders  monthly from net investment income, net
realized   short-term  capital  gains  and  other  sources,  if  necessary.  Net
long-term  capital  gains,  if  any,  in  excess  of  loss  carryforwards may be
distributed   annually.   Dividends   and  distributions  are  recorded  on  the
ex-dividend  date.  Dividends  and  distributions  to preferred shareholders are
accrued and determined as described in Note 4.

DEFERRED  ORGANIZATION  EXPENSES: A  total of $65,000 was incurred in connection
with  the  organization  of  the  Trust. These costs were deferred and have been
amortized  ratably  over  a  period  of  sixty  months  from  the date the Trust
commenced investment operations.

RECLASSIFICATION  OF  CAPITAL  ACCOUNTS: Effective  January  1,  1994, the Trust
began  accounting  and reporting for permanent differences between financial and
tax  reporting  in  accordance  with  the American Institute of Certified Public
Accountants'   Statement   of   Position  93-2:  Determination,  Disclosure  and
Financial  Statement of Income, Capital Gain and Return of Capital Distributions
by  Investment  Companies.  The  effect  of  adopting the statement for the year
ended  October  31,  1998  was  to  increase  accumulated  net realized gain and
decrease  undistributed net investment income by $31,244. Net investment income,
net realized gains and net assets were not affected by this change.

ESTIMATES: The  preparation of financial statements in conformity with generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect  the  reported  amounts  of assets and liabilities and
disclosure  of  contingent  assets  and liabilities at the date of the financial
statements  and  the  reported  amounts  of  revenues  and  expenses  during the
reporting period. Actual results could differ from those estimates.


NOTE  2.  AGREEMENTS 

     The Trust has an Investment  Advisory  Agreement with  BlackRock  Financial
Management,  Inc.,  (the  "Adviser"),  a  wholly-owned  corporate  subsidiary of
BlackRock Advisors, Inc., which is an indirect majority-owned  subsidiary of PNC
Bank, N.A., and an Administration Agreement with Princeton Administrators,  L.P.
(the  "Administrator"),  an indirect wholly-owned  subsidiary of Merrill Lynch &
Co., Inc.

      The  investment  fee  paid  to  the Adviser is computed weekly and payable
monthly  at an annual rate of 0.35% of the Trust's average weekly net investment
assets.  The  administration  fee  paid  to  the  Administrator is also computed
weekly  and  payable  monthly  at an annual rate of 0.15% of the Trust's average
weekly net investment assets.


                                       11


<PAGE>

      Pursuant  to  the  agreements, the Adviser provides continuous supervision
of  the  investment portfolio and pays the compensation of officers of the Trust
who  are affiliated persons of the Adviser. The Administrator pays occupancy and
certain  clerical  and  accounting costs of the Trust. The Trust bears all other
costs and expenses.


NOTE 3. PORTFOLIO SECURITIES

     Purchases  and sales of  invest  ment  securities,  other  than  short-term
investments,  for the year ended October 31, 1998,  aggregated  $177,852,627 and
$176,510,441, respectively.

      The  federal  income  tax  basis of the Trust's investments at October 31,
1998   was  $360,158,261,  and  accordingly,  net  unrealized  appreciation  was
$26,687,563   (gross   unrealized   appreciation-$26,828,690,  gross  unrealized
depreciation-$141,127).


NOTE 4. CAPITAL   

     There are 200 million shares of $.01 par value common stock authorized.  Of
the 16,707,093 common shares  outstanding at October 31, 1998, the Adviser owned
7,205 shares. As of October 31, 1998, there were 5,200 shares of Preferred Stock
outstanding as follows: Series T7--2,600 and Series T28--2,600.

     The Trust may classify or  reclassify  any unissued  shares of common stock
into  one or more  series  of  preferred  stock.  On April 1,  1993,  the  Trust
reclassified  2,600 shares of common stock and issued 2 series of Auction Market
Preferred Stock ("Preferred Stock") as follows:  Series T7--1,300 shares, Series
T28--1,300  shares.  The Preferred Stock had a liquidation  value of $50,000 per
share plus any accumulated but unpaid  dividends.  On May 16, 1995  shareholders
approved a proposal to split each share of the Trust's Auction Market  Preferred
Stock  into two  shares  and  simultaneously  reduce  each  share's  liquidation
preference  from  $50,000 to $25,000 per share plus any  accumulated  but unpaid
dividends. The stock split occurred on July 24, 1995.

     Dividends on Series T7 are cumulative at a rate which is reset every 7 days
based on the results of an auction.  Dividends on Series T28 are also cumulative
at a rate  which is reset  every 28 days  based on the  results  of an  auction.
Dividend  rates  ranged  from 3.30% to 6.01%  during the year ended  October 31,
1998.

      The  Trust may not declare dividends or make other distributions on shares
of  common stock or purchase any such shares if, at the time of the declaration,
distribution,  or  purchase,  asset  coverage  with  respect  to the outstanding
Preferred Stock would be less than 200%.

      The  Preferred Stock is redeemable at the option of the Trust, in whole or
in  part, on any dividend payment date at $25,000 per share plus any accumulated
or  unpaid  dividends  whether  or  not  declared.  The  Preferred Stock is also
subject  to  mandatory  redemption  at $25,000 per share plus any accumulated or
unpaid  dividends,  whether or not declared, if certain requirements relating to
the  composition  of the assets and liabilities of the Trust as set forth in the
Articles of Incorporation are not satisfied.

      The  holders of Preferred Stock have voting rights equal to the holders of
common  stock (one vote per share) and will vote together with holders of shares
of  common stock as a single class. However, holders of Preferred Stock are also
entitled  to  elect  two  of  the Trust's directors. In addition, the Investment
Company  Act  of  1940  requires  that, along with approval by stockholders that
might  otherwise  be  required, the approval of the holders of a majority of any
outstanding  preferred shares, voting separately as a class would be required to
(a)  adopt  any plan of reorganization that would adversely affect the preferred
shares,  and  (b)  take  any  action  requiring  a  vote  of  security  holders,
including,  among  other  things,  changes in the Trust's subclassification as a
closed-end   investment   company  or  changes  in  its  fundamental  investment
restrictions.

NOTE 5. DIVIDENDS AND DISTRIBUTIONS

     Subsequent  to  October  31,  1998,  the  Board of  Directors  of the Trust
declared a dividend  from  undistributed  earnings of $0.0719  per common  share
payable November 30, 1998, to shareholders of record on November 16, 1998.

      For  the  period  November  1  through  November 30, dividends declared on
Preferred   Stock  totalled  $560,312  in  aggregate  for  the  two  outstanding
Preferred Stock series.



                                       12


<PAGE>

- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                        REPORT OF INDEPENDENT AUDITORS
- --------------------------------------------------------------------------------
The Shareholders and Board of Directors of
The BlackRock Investment Quality Municipal Trust Inc.:

     We  have  audited  the  accompanying  statement  of assets and liabilities,
including  the  portfolio  of  investments,  of The BlackRock Investment Quality
Municipal  Trust  Inc.  as  of  October  31,  1998 and the related statements of
operations  for  the year then ended and of changes in net investment assets for
each  of the two years in the period then ended and the financial highlights for
the  each of the five years in the period then ended. These financial statements
and  the  financial highlights are the responsibility of the Trust's management.
Our  responsibility  is  to express an opinion on these financial statements and
financial highlights based on our audits.

     We  conducted  our  audits  in  accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether  the  financial  statements  and financial
highlights  are free of material misstatement. An audit includes examining, on a
test  basis,  evidence  supporting  the amounts and disclosures in the financial
statements.  Our procedures included confirmation of securities owned at October
31,  1998  by  correspondence  with  the  custodian  and  brokers. An audit also
includes  assessing  the  accounting  principles  used and significant estimates
made  by  management,  as  well  as  evaluating  the overall financial statement
presentation.  We  believe  that  our  audits provide a reasonable basis for our
opinion.

     In  our opinion, such financial statements and financial highlights present
fairly,  in  all  material  respects,  the  financial  position of The BlackRock
Investment  Quality Municipal Trust Inc. at October 31, 1998, and the results of
its  operations,  the  changes  in  its  net investment assets and its financial
highlights  for  the  respective  stated  periods  in  conformity with generally
accepted accounting principles.


/s/ DELOITTE & TOUCHE LLP
- -------------------------


DELOITTE & TOUCHE LLP

New York, New York
December 11, 1998

                                       13


<PAGE>

- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                                TAX INFORMATION
- --------------------------------------------------------------------------------
     We  are  required by the Internal Revenue Code to advise you within 60 days
of  the  Trust's  fiscal  year end as to the federally exempt interest dividends
received  by  you during such fiscal year. Accordingly, we are advising you that
all  regular  dividends  paid by the Trust during the fiscal year were federally
tax-exempt  interest  dividends.  Additionally,  the  following  summarizes  the
special taxable distributions declared by the Trust during the fiscal year:

<TABLE>
<CAPTION>
                                                                     TAXABLE        SHORT-TERM               LONG-TERM
                                          RECORD       PAYABLE       ORDINARY        CAPITAL               CAPITAL GAINS
                                           DATE         DATE          INCOME           GAIN            28%            20%
                                        ----------   ----------   -------------   -------------   ------------   -------------
<S>                                     <C>          <C>          <C>              <C>             <C>            <C>
Common Stock Shareholders ...........    12/15/97     12/31/97    0.003187         0.160334        0.01532        0.021792
Common Stock Shareholders ...........     6/15/98      6/30/98     0.00128               --             --              --
Preferred Stock Series T-7 ..........    11/18/97     11/19/97        0.18            22.04           3.00            2.11
Preferred Stock Series T-7 ..........    11/25/97     11/26/97        0.20            22.23           3.02            2.12
Preferred Stock Series T-7 ..........     12/2/97      12/3/97        0.19            21.84           2.97            2.09
Preferred Stock Series T-7 ..........     12/9/97     12/10/97        0.19            21.26           2.89            2.03
Preferred Stock Series T-7 ..........    12/16/97     12/17/97        0.18            21.46           2.92            2.05
Preferred Stock Series T-7 ..........    12/23/97     12/24/97        0.18            21.61           2.94            2.07
Preferred Stock Series T-7 ..........    12/30/97     12/31/97        0.20            23.20           3.15            2.22
Preferred Stock Series T-7 ..........      1/6/98       1/7/98        0.18            19.83           2.69            1.89
Preferred Stock Series T-28 .........     12/9/97     12/10/97        0.76            88.14          11.98            8.42
Preferred Stock Series T-28 .........      1/6/98       1/7/98        0.76            86.85          11.80            8.30
Preferred Stock Series T-7 ..........     6/30/98       7/1/98        1.52             0.31           0.07               -
Preferred Stock Series T-28 .........     7/21/98      7/22/98        1.53             0.30           0.06               -
</TABLE>                                                          

- --------------------------------------------------------------------------------
                          DIVIDEND REINVESTMENT PLAN
- --------------------------------------------------------------------------------
     Pursuant   to   the   Trust's  Dividend  Reinvestment  Plan  (the  "Plan"),
shareholders  will automatically have all distributions of dividends and capital
gains  reinvested  by  State Street Bank and Trust Company (the "Plan Agent") in
Trust  shares  pursuant  to the Plan. Shareholders who do not participate in the
Plan  will  receive  all  distributions  in  cash paid by check in United States
dollars  mailed  directly  to  the  shareholders of record (or if the shares are
held  in  street  or  other  nominee  name, then to the nominee) by the transfer
agent, as dividend disbursing agent.
     The  Plan  Agent  serves as agent for the shareholders in administering the
Plan.  After  the Trust declares a dividend or determines to make a capital gain
distribution,  the  Plan  Agent will, as agent for the participants, receive the
cash  payment and use it to buy Trust shares in the open market, on the New York
Stock  Exchange or elsewhere, for the participants' accounts. The Trust will not
issue any new shares under the Plan.
     Participants  in the Plan may withdraw from the Plan upon written notice to
the  Plan  Agent and will receive certificates for whole Trust shares and a cash
payment for any fraction of a Trust share.
     The  Plan  Agent's  fees  for the handling of the reinvestment of dividends
and  distributions will be paid by the Trust. However, each participant will pay
a  pro  rata  share  of  brokerage commissions incurred with respect to the Plan
Agent's  open  market purchases in connection with the reinvestment of dividends
and  distributions.  The  automatic  reinvestment of dividends and distributions
will  not  relieve participants of any federal, state or local income taxes that
may be payable on such dividends or distributions.
     Experience  under  the  Plan  may  indicate  that  changes  are  desirable.
Accordingly,  the  Trust  reserves  the  right to amend or terminate the Plan as
applied  to  any  dividend  or distribution paid subsequent to written notice of
the  change  sent  to  all shareholders of the Trust at least 90 days before the
record  date  for  the dividend or distribution. The Plan also may be amended or
terminated  by  the  Plan  Agent  upon  at  least 90 days' written notice to all
shareholders  of  the  Trust.  All  correspondence concerning the Plan should be
directed to the Plan.


                                       14


<PAGE>

- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                            ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
     There  have  been  no material changes in the Trust's investment objectives
or  policies  that  have not been approved by the shareholders or to its charter
or  by-laws  or  in the principal risk factors associated with investment in the
Trust.  There  have been no changes in the persons who are primarily responsible
for the day-to-day management of the Trust's portfolio

     YEAR  2000  READINESS  DISCLOSURE. The Trust is currently in the process of
evaluating  its  information technology infrastructure for Year 2000 compliance.
Substantially  all  of  the  Trust's  information  systems  are  supplied by the
Adviser.  The  Adviser  has  advised  the  Trust that it is currently evaluating
whether  such  systems  are  year  2000  compliant and that it expects to incure
costs  of  up  to  approximately  five hundred thousand dollars to complete such
evaluation  and  to make any modifications to its systems as may be necessary to
achieve  Year 2000 compliance. The Adviser has advised the Trust that it expects
to  have fully tested its systems for Year 2000 compliance by December 31, 1998.
The  Trust  may  be  required  to  bear  a  portion of such cost incurred by the
Adviser  in  this  regard.  The  Adviser  has advised the Trust that it does not
anticipate  any  material  disruption in the operations of the Trust as a result
of  any  failure by the Adviser to achieve Year 2000 compliance. There can be no
assurance  that  the  costs will not exceed the amount referred to above or that
the Trust will not experience a disruption in operations.

     The  Adviser  has advised the Trust that it is in the process of evaluating
the  Year 2000 compliance of various suppliers of the Adviser and the Trust. The
Adviser  has  advised  the  Trust  that  it  intends  to  communicate  with such
suppliers  to  determine  their  Year  2000  compliance status and the extent to
which  the  Adviser  or  the Trust could be affected by any supplier's Year 2000
compliance  issues.  To  date,  however,  the Adviser has not received responses
from  all  such  suppliers with respect to their Year 2000 compliance, and there
can  be  no  assurance  that  the  systems of such suppliers, who are beyond the
Trust's  control,  will  be  Year  2000  compliant. In the event that any of the
Trust's  significant  suppliers do not successfully and timely achieve Year 2000
compliance,  the Trust's business or operations could be adversely affected. The
Adviser  has  advised  the  Trust  that  it  is  in  the  process of preparing a
contingency  plan  for  Year  2000  compliance by its suppliers. There can be no
assurance  that  such  contingency  plan  will  be  successful  in  preventing a
disruption of the Trust's operations.

     The  Trust  is  designating  this  disclosure  as  its  Year 2000 readiness
disclosure  for  all  purposes  under  the  Year  2000 Information and Readiness
Disclosure  Act  and  the  foregoing  information  shall  constitute a Year 2000
statement for purposes of that Act.


                                       15


<PAGE>

- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                              INVESTMENT SUMMARY
- --------------------------------------------------------------------------------
THE TRUST'S INVESTMENT OBJECTIVE

The  BlackRock  Investment  Quality Municipal Trust's investment objective is to
provide  high  current  income exempt from regular Federal income tax consistent
with the preservation of capital.


WHO MANAGES THE TRUST?

BlackRock   Financial   Management,  Inc.  ("BlackRock")  is  an  SEC-registered
investment  adviser.  BlackRock  and  its  affiliates currently manage over $122
billion  on  behalf  of  taxable  and  tax-exempt  clients worldwide. Strategies
include  fixed  income,  equity  and  cash and may incorporate both domestic and
international   securities.   Domestic   fixed  income  strategies  utilize  the
government,  mortgage,  corporate  and municipal bond sectors. BlackRock manages
twenty-one  closed-end  funds that are traded on either the New York or American
stock  exchanges,  and  a  $23 billion family of open-end equity and bond funds.
Current  institutional  clients  number  410, domiciled in the United States and
overseas.


WHAT CAN THE TRUST INVEST IN?

Under  normal  conditions, the Trust expects to continue to manage its assets so
that  at least 80% of its investments are rated at least investment grade ("BBB"
by  Standard  &  Poor's and "Baa" by Moody's Investor Services) and up to 20% of
its  assets  may  instead  be  deemed  to be of equivalent credit quality by the
Adviser.  Examples  of  the  types  of  securities  that the Trust may invest in
include  general  obligation bonds, which are backed by the full taxing power of
the  municipality  (states,  counties  and cities), and revenue bonds, which are
backed  by  a  revenue  source  associated with the issuing municipality or by a
special  tax.  Revenue bonds include those that are backed by revenues generated
by  universities, hospitals, housing developments, utilities, public facilities,
toll roads, airports, etc.


WHAT IS THE ADVISER'S INVESTMENT STRATEGY?

The  Adviser  will manage the assets of the Trust in accordance with the Trust's
investment  objective and policies to seek to achieve its objective by investing
in  municipal  debt  securities  that  are  diversified  both geographically and
according  to  revenue  source. As such, the Adviser actively manages the assets
in  relation  to  market  conditions  and  interest rate changes. In seeking the
investment  objective,  the Trust does not expect to invest more than 25% of its
total  assets  in  municipals  that  are  issued by the same state. Depending on
yield  and portfolio allocation considerations, the Adviser may choose to invest
a  portion  of  the  Trust's  assets  in  securities  which pay interest that is
subject to AMT (alternative minimum tax).

Under  current market conditions the use of leverage increases the income earned
by  the  Trust.  The  Trust  employs  leverage primarily through the issuance of
preferred   stock.  Preferred  stockholders  will  receive  dividends  based  on
short-term  rates  in  exchange  for  allowing  the  Trust  to borrow additional
assets.  These  assets  will  be  invested in longer-term assets which typically
offer  higher  interest  rates  and  the  difference  between  the  cost  of the
dividends  paid  to  preferred  stockholders  and  the  interest  earned  on the
longer-term   securities   will   provide   higher   income  levels  for  common
stockholders  in  most  interest  rate  environments. The Trust issued preferred
stock  to  leverage  the  portfolio  at  approximately  35%  of total assets. To
protect  the  common  stockholders  from  increases in the cost of the preferred
stock  dividends,  the  Trust  invests in securities called "additional interest
bonds"  or "embedded caps", which can help to limit the risk of increasing costs
of  leverage  in  a  rising interest rate or flattening yield curve environment.
These  bonds  pay  additional  interest when short-term municipal interest rates
rise  above  a  predetermined  rate,  or  "cap". These securities are used, when
available  in  the  marketplace,  to attempt to offset increases in the interest
paid  to  preferred  stockholders  and  may allow the Trust to maintain dividend
levels  to  common  stockholders  in  interest rate environments where the yield
curve  is  either  flat  or inverted. See "Leverage Considerations in the Trust"
below.


                                       16


<PAGE>

HOW  ARE  THE  TRUST'S  SHARES  PURCHASED AND SOLD? DOES THE TRUST PAY DIVIDENDS
REGULARLY?

The  Trust's  shares  are  traded  on the New York Stock Exchange which provides
investors  with  liquidity on a daily basis. Orders to buy or sell shares of the
Trust  must  be  placed  through  a  registered broker or financial advisor. The
Trust  pays  monthly dividends which are typically paid on the last business day
of  the  month.  For  shares  held  in  the shareholder's name, dividends may be
reinvested  in additional shares of the fund through the Trust's transfer agent,
State  Street  Bank  and Trust. Investors who wish to hold shares in a brokerage
account  should  check  with  their financial advisor to determine whether their
brokerage firm offers dividend reinvestment services.


LEVERAGE CONSIDERATIONS IN THE TRUST

Leverage  increases  the  duration  (or price sensitivity of the net assets with
respect  to  changes  in  interest  rates)  of  the Trust, which can improve the
performance  of  the  Trust  in  a declining rate environment, but can cause net
assets  to  decline  faster  in  a rapidly rising interest rate environment. The
Trust  may  reduce,  or unwind, the amount of leverage employed should BlackRock
consider  that  reduction  to be in the best interests of the Trust. BlackRock's
portfolio  managers continuously monitor and regularly review the Trust's use of
leverage  and  maintain  the  ability  to  unwind the leverage if that course is
chosen.  As  mentioned above, the Trust will attempt to maintain a percentage of
its  investments in additional interest bonds which may help protect the Trust's
income from increases in the cost of leverage.


SPECIAL CONSIDERATIONS AND RISK FACTORS RELEVANT TO THE TRUST

THE  TRUST  IS  INTENDED  TO  BE  A LONG-TERM INVESTMENT AND IS NOT A SHORT-TERM
TRADING VEHICLE.

INVESTMENT  OBJECTIVE.  Although  the  objective of the Trust is to provide high
current  income  exempt  from  regular  Federal  income  tax consistent with the
preservation  of  capital, there can be no assurance that this objective will be
achieved.

DIVIDEND  CONSIDERATIONS.  The income and dividends paid by the Trust are likely
to  vary  over  time  as fixed income market conditions change. Future dividends
may be higher or lower than the dividend the Trust is currently paying.

LEVERAGE. The  Trust  utilizes  leverage through preferred stock, which involves
special  risks.  The  Trust's  net  asset  value  and  market  value may be more
volatile due to its use of leverage.

MARKET  PRICE  OF SHARES.  The shares of closed-end investment companies such as
the  Trust  trade  on the New York Stock Exchange (NYSE symbol: BKN) and as such
are  subject to supply and demand influences. As a result, shares may trade at a
discount or a premium to their net asset value.

INVESTMENT  GRADE MUNICIPAL OBLIGATIONS.  The value of municipal debt securities
generally  varies  inversely  with  changes in prevailing market interest rates.
Depending  on  the  amount  of  call protection that the securities in the Trust
have,  the Trust may be subject to certain reinvestment risks in environments of
declining interest rates.

ILLIQUID  SECURITIES.  The  Trust  may  invest  in securities that are illiquid,
although  under  current  market conditions the Trust expects to do so to only a
limited extent. These securities involve special risks.

ANTITAKEOVER  PROVISIONS.  Certain antitakeover provisions will make a change in
the  Trust's  business  or management more difficult without the approval of the
Trust's  Board of Directors and may have the effect of depriving shareholders of
an  opportunity  to  sell  their shares at a premium above the prevailing market
price.


                                       17


<PAGE>

- --------------------------------------------------------------------------------
             THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
                                   GLOSSARY
- --------------------------------------------------------------------------------

<TABLE>
<S>                      <C>
CLOSED-END FUND:         Investment vehicle which initially offers a fixed number of shares and trades on
                         a stock exchange. The fund invests in a portfolio of securities in accordance with
                         its stated investment objectives and policies.

DISCOUNT:                When a fund's net asset value is greater than its stock price the fund is said to be
                         trading at a discount.

DIVIDEND:                Income generated by securities in a portfolio and distributed to shareholders after
                         the deduction of expenses. This Trust declares and pays dividends to common
                         shareholders on a monthly basis.

DIVIDEND REINVESTMENT:   Shareholders may elect to have all dividends and distributions of capital gains
                         automatically reinvested into additional shares of the Trust.

MARKET PRICE:            Price per share of a security trading in the secondary market. For a closed-end
                         fund, this is the price at which one share of the fund trades on the stock exchange.
                         If you were to buy or sell shares, you would pay or receive the market price.

NET ASSET VALUE (NAV):   Net asset value is the total market value of all securities and other assets held by
                         the Trust, plus income accrued on its investments, minus any liabilities including
                         accrued expenses, divided by the total number of outstanding shares. It is the
                         underlying value of a single share on a given day. Net asset value for the Trust is
                         calculated weekly and published in Barron's on Saturday and The New York Times
                         or The Wall Street Journal each Monday.

PREMIUM:                 When a fund's stock price is greater than its net asset value, the fund is said to be
                         trading at a premium.

PREREFUNDED BONDS:       These securities are collateralized by U.S. Government securities which are held
                         in escrow and are used to pay principal and interest on the tax exempt issue and
                         retire the bond in full at the date indicated, typically at a premium to par.
</TABLE>

                                       18


<PAGE>

- --------------------------------------------------------------------------------
                   THE BLACKROCK FINANCIAL MANAGEMENT, INC.
                   SUMMARY OF CLOSED-END FUNDS TAXABLE TRUST
- --------------------------------------------------------------------------------
TAXABLE TRUSTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                              STOCK      MATURITY
                                                              SYMBOL        DATE
PERPETUAL TRUSTS                                            ----------   ---------
<S>                                                           <C>          <C>
The BlackRock Income Trust Inc.                                BKT          N/A
The BlackRock North American Government Income Trust Inc.      BNA          N/A

TERM TRUSTS
The BlackRock 1998 Term Trust Inc.                             BBT         12/98
The BlackRock 1999 Term Trust Inc.                             BNN         12/99
The BlackRock Target Term Trust Inc.                           BTT         12/00
The BlackRock 2001 Term Trust Inc.                             BLK         06/01
The BlackRock Strategic Term Trust Inc.                        BGT         12/02
The BlackRock Investment Quality Term Trust Inc.               BQT         12/04
The BlackRock Advantage Term Trust Inc.                        BAT         12/05
The BlackRock Broad Investment Grade 2009 Term Trust Inc.      BCT         12/09
</TABLE>

TAX-EXEMPT TRUSTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                     STOCK      MATURITY
                                                                     SYMBOL       DATE
PERPETUAL TRUSTS                                                   ---------   ---------
<S>                                                                  <C>         <C>
The BlackRock Investment Quality Municipal Trust Inc.                BKN          N/A
The BlackRock California Investment Quality Municipal Trust Inc.     RAA          N/A
The BlackRock Florida Investment Quality Municipal Trust             RFA          N/A
The BlackRock New Jersey Investment Quality Municipal Trust Inc.     RNJ          N/A
The BlackRock New York Investment Quality Municipal Trust Inc.       RNY          N/A

TERM TRUSTS
The BlackRock Municipal Target Term Trust Inc.                       BMN         12/06
The BlackRock Insured Municipal 2008 Term Trust Inc.                 BRM         12/08
The BlackRock California Insured Municipal 2008 Term Trust Inc.      BFC         12/08
The BlackRock Florida Insured Municipal 2008 Term Trust              BRF         12/08
The BlackRock New York Insured Municipal 2008 Term Trust Inc.        BLN         12/08
The BlackRock Insured Municipal Term Trust Inc.                      BMT         12/10
</TABLE>

IF  YOU  WOULD LIKE FURTHER INFORMATION PLEASE DO NOT HESITATE TO CALL BLACKROCK
                            AT (800) 227-7BFM (7236)
                    OR CONSULT WITH YOUR FINANCIAL ADVISOR.

                                       19


<PAGE>

                                    BLACKROCK

DIRECTORS
Laurence D. Fink, CHAIRMAN
Andrew F. Brimmer
Richard E. Cavanagh
Kent Dixon
Frank J. Fabozzi
James Grosfeld
James Clayburn La Force, Jr.
Walter F. Mondale
Ralph L. Schlosstein

OFFICERS
Ralph L. Schlosstein, PRESIDENT
Keith T. Anderson, VICE PRESIDENT
Michael C. Huebsch, VICE PRESIDENT
Robert S. Kapito, VICE PRESIDENT
Kevin Klingert, VICE PRESIDENT
Richard M. Shea, VICE PRESIDENT/TAX
Henry Gabbay, TREASURER
James Kong, ASSISTANT TREASURER
Karen H. Sabath, SECRETARY

INVESTMENT ADVISER
BlackRock Financial Management, Inc.
345 Park Avenue
New York, NY 10154
(800) 227-7BFM

ADMINISTRATOR
Princeton Administrators, L.P.
P.O. Box 9095
Princeton, NJ 08543-9095
(800) 543-6217

CUSTODIAN AND TRANSFER AGENT
State Street Bank and Trust Company
One Heritage Drive
North Quincy, MA 02171
(800) 699-1BFM

AUCTION AGENT
Bankers Trust Company
4 Albany Street
New York, NY 10006

INDEPENDENT AUDITORS
Deloitte & Touche LLP
Two World Financial Center
New York, NY 10281-1434

LEGAL COUNSEL
Skadden, Arps, Slate, Meagher & Flom LLP
919 Third Avenue
New York, NY 10022
     This  report  is  for  shareholder  information.  This  is not a prospectus
intended for use in the purchase or sale of any securities.


                            THE BLACKROCK INVESTMENT
                          QUALITY MUNICIPAL TRUST INC.
                       c/o Princeton Administrators, L.P.
                                 P.O. Box 9095
                            Princeton, NJ 08543-9095
                                 (800) 543-6217


- --------------------------------------------------------------------------------
THE BLACKROCK
INVESTMENT QUALITY
MUNICIPAL TRUST INC.
- --------------------------------------------------------------------------------
ANNUAL REPORT
OCTOBER 31, 1998


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