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SIGNATURE PAUL SCHUBERT
TITLE ADMINISTRATOR
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 374,823,787
<INVESTMENTS-AT-VALUE> 398,391,028
<RECEIVABLES> 7,624,795
<ASSETS-OTHER> 32,813
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 406,048,636
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<TOTAL-LIABILITIES> 1,729,087
<SENIOR-EQUITY> 130,000,000
<PAID-IN-CAPITAL-COMMON> 240,092,544
<SHARES-COMMON-STOCK> 25,885,639
<SHARES-COMMON-PRIOR> 25,885,639
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<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (324,604)
<OVERDISTRIBUTION-GAINS> 0
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<DIVIDEND-INCOME> 0
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</TABLE>
INDEPENDENT AUDITORS' REPORT
To the Board of Directors and Shareholders of
The BlackRock Insured Municipal Term Trust Inc.
In planning and performing our audit of the financial statements
of The BlackRock Insured Municipal Term Trust Inc. (the "Trust")
for the year ended December 31, 1999 (on which we have issued
our report dated February 11, 2000), we considered its internal
control, including control activities for safeguarding securities,
in order to determine our auditing procedures for the purpose of
expressing our opinion on the financial statements and to comply
with the requirements of Form N-SAR, and not to provide assurance
on the Trust's internal control.
The management of the Trust is responsible for establishing and
maintaining internal control. In fulfilling this responsibility,
estimates and judgments by management are required to assess the
expected benefits and related costs of controls. Generally,
controls that are relevant to an audit pertain to the entity's
objective of preparing financial statements for external
purposes that are fairly presented in conformity with generally
accepted accounting principles. Those controls include the
safeguarding of assets against unauthorized acquisition, use
or disposition.
Because of inherent limitations in any internal control,
misstatements due to error or fraud may occur and not be
detected. Also, projections of any evaluation of internal
control to future periods are subject to the risk that the
internal control may become inadequate because of changes in
conditions, or that the degree of compliance with policies or
procedures may deteriorate.
Our consideration of the Trust's internal control would not
necessarily disclose all matters in internal control that might
be material weaknesses under standards established by the
American Institute of Certified Public Accountants. A material
weakness is a condition in which the design or operation of one
or more of the internal control components does not reduce to a
relatively low level the risk that misstatements caused by error
or fraud in amounts that would be material in relation to the
financial statements being audited may occur and not be detected
within a timely period by employees in the normal course of
performing their assigned functions. However, we noted no
matters involving the Trust's internal control and its
operation, including controls for safeguarding securities, that
we consider to be material weaknesses as defined above as of
December 31, 1999.
This report is intended solely for the information and use of
management, the Board of Directors of The BlackRock Insured
Municipal Term Trust Inc., and the Securities and Exchange
Commission, and is not intended to be and should not be used
by anyone other than these specified parties.
Deloitte & Touche LLP
New York, New York
February 11, 2000
