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SIGNATURE HENRY GABBAY
TITLE TREASURER
INDEPENDENT AUDITORS' REPORT
To the Trustees and Shareholders of the
BlackRock Income Trust Inc.:
In planning and performing our audit of the
financial statements of the BlackRock Income
Trust Inc. (the "Trust") for the year ended
October 31, 1999 (on which we have issued our
report dated December 13, 1999), 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 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 October 31,
1999.
This report is intended solely for the
information and use of management, the
Trustees of the BlackRock Income 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
Boston, Massachusetts
December 13, 1999
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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