77B Accountant's Report on Internal Control
Columbia California Insured Municipal Fund


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PricewaterhouseCoopers LLP
160 Federal Street
Boston, MA 02110-9862


             Report of Independent Registered Public Accounting Firm

To the Trustees and the Shareholders of Colonial Municipal Income Trust Colonial
Intermediate High Income Fund Colonial High Income Municipal Trust Colonial
Investment Grade Municipal Trust Colonial InterMarket Income Trust I Colonial
California Insured Municipal Fund Colonial Insured Municipal Fund

In planning and performing our audits of the financial statements of Colonial
Municipal Income Trust, Colonial Intermediate High Income Fund, Colonial High
Income Municipal Trust, Colonial Investment Grade Municipal Trust, Colonial
InterMarket Income Trust I, Colonial California Insured Municipal Fund, and
Colonial Insured Municipal Fund, (the "Funds") as of and for the year ended
November 30, 2005, in accordance with the standards of the Public Company
Accounting Oversight Board (United States), we considered the Funds' internal
control over financial reporting, including control activities for safeguarding
securities, as a basis for designing our auditing procedures for the purpose of
expressing our opinion on the financial statements and to comply with the
requirements of Form N-SAR, but not for the purpose of expressing an opinion on
the effectiveness of the Funds' internal control over financial reporting.
Accordingly, we express no such opinion.

The management of the Funds is responsible for establishing and maintaining
effective internal control over financial reporting. In fulfilling this
responsibility, estimates and judgments by management are required to assess the
expected benefits and related costs of controls. A fund's internal control over
financial reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted
accounting principles. Such internal control over financial reporting includes
policies and procedures that provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use or disposition of a fund's
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting
may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become
inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

A control deficiency exists when the design or operation of a control does not
allow management or employees, in the normal course of performing their assigned
functions, to prevent or detect misstatements on a timely basis. A significant
deficiency is a control deficiency, or combination of control deficiencies, that
adversely affects the funds' ability to initiate, authorize, record, process or
report external financial data reliably in accordance with generally accepted
accounting principles such that there is more than a remote likelihood that a
misstatement of the funds' annual or interim financial statements that is more
than inconsequential will not be prevented or detected. A material weakness is a
control deficiency, or combination of control deficiencies, that results in more
than a remote likelihood that a material misstatement of the annual or interim
financial statements will not be prevented or detected.

Our consideration of the Funds' internal control over financial reporting was
for the limited purpose described in the first paragraph and would not
necessarily disclose all deficiencies in internal control over financial
reporting that might be significant deficiencies or material weaknesses under
standards established by the Public Company Accounting Oversight Board (United
States). However, we noted no deficiencies in the Funds' internal control over
financial reporting and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
November 30, 2005.

This report is intended solely for the information and use of management and the
Board of Trustees of Colonial Municipal Income Trust, Colonial Intermediate High
Income Fund, Colonial High Income Municipal Trust, Colonial Investment Grade
Municipal Trust, Colonial InterMarket Income Trust I, Colonial California
Insured Municipal Fund, Colonial Insured Municipal Fund, and the Securities and
Exchange Commission and is not intended to be and should not be used by anyone
other than these specified parties.

/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
January 24, 2005




77E Legal Proceedings
On February 9, 2005, Columbia Management (which has since merged into Banc of
America Capital Management, LLC(now named Columbia Management Advisors, LLC))
and Columbia Funds Distributor, Inc.(which has been renamed Columbia Management
Distributors, Inc.) ("CMD") (collectively, the "Columbia Group") entered into
an Assurance of Discontinuance with the New York Attorney General ("NYAG") (the
"NYAG Settlement") and consented to the entry of a cease-and-desist order by the
Securities and Exchange Commission ("SEC") (the "SEC Order"). The SEC Order and
the NYAG Settlement are referred to collectively as the "Settlements". The
Settlements contain substantially the same terms and conditions as outlined in
the agreements in principle which Columbia Group entered into with the SEC and
NYAG in March, 2004.

Under the terms of the SEC Order, the Columbia Group has agreed among other
things, to: pay $70 million in disgorgement and $70 million in civil money
penalties; cease and desist from violations of the antifraud provisions and
certain other provisions of the federal securities laws; maintain certain
compliance and ethics oversight structures; retain an independent consultant to
review the Columbia Group's applicable supervisory, compliance, control and
other policies and procedures; and retain an independent distribution consultant
(see below).  The Columbia Funds have also voluntarily undertaken to implement
certain governance measures designed to maintain the independence of their
boards of trustees.  The NYAG Settlement also, among other things, requires
Columbia Management and its affiliates to reduce certain Columbia Funds
(including the former Nations Funds) and other mutual funds management fees
collectively by $32 million per year for five years, for a projected total of
$160 million in management fee reductions.

Pursuant to the procedures set forth in the SEC Order, the $140 million in
settlement amounts described above will be distributed in accordance with a
distribution plan to be developed by an independent distribution consultant who
is acceptable to the SEC staff and the Columbia Funds' independent trustees.
The distribution plan must be based on a methodology developed in consultation
with the Columbia Group and the funds' independent trustees and not
unacceptable to the staff of the SEC.  At this time, the distribution plan is
still under development.  As such, any gain to the funds or their shareholders
cannot currently be determined.

As a result of these matters or any adverse publicity or other developments
resulting from them, there may be increased redemptions or reduced sales of
fund shares, which could increase transaction costs or operating
expenses, or have other adverse consequences for the funds.

A copy of the SEC Order is available on the SEC website at http://www.sec.gov.
A copy of the NYAG Settlement is available as part of the Bank of America
Corporation Form 8-K filing on February 10, 2005.

In connection with events described in detail above, various parties have filed
suit against certain funds, the Trustees of the Columbia Funds, FleetBoston
Financial Corporation and its affiliated entities and/or Bank of America and
its affiliated entities.  More than 300 cases including those filed against
entities unaffiliated with the funds, their Boards, FleetBoston Financial
Corporation and its affiliated entities and/or Bank of America and its
affiliated entities have been transferred to the Federal District Court in
Maryland and consolidated in a multi-district proceeding (the "MDL").

The derivative cases purportedly brought on behalf of the Columbia Funds in the
MDL have been consolidated under the lead case.  The fund derivative plaintiffs
allege that the funds were harmed by market timing and late trading activity
and seek, among other things, the removal of the trustees of the Columbia
Funds, removal of the Columbia Group, disgorgement of all management fees and
monetary damages.

On March 21, 2005, purported class action plaintiffs filed suit in Massachusetts
state court alleging that the conduct, including market timing, entitles Class
B shareholders in certain Columbia Funds to an exemption from contingent
deferred sales charges upon early redemption (the "CDSC Lawsuit").  The CDSC
Lawsuit has been removed to federal court in Massachusetts and the federal
Judicial Panel has transferred the CDSC Lawsuit to the MDL.

The MDL is ongoing.  Accordingly, an estimate of the financial impact of this
litigation on any fund, if any, cannot currently be made.

In 2004, certain Columbia Funds, the Trustees of the Columbia Funds, advisers
and affiliated entities were named as defendants in certain purported
shareholder class and derivative actions making claims, including claims under
the Investment Company and the Investment Advisers Acts of 1940 and state law.
The suits allege, inter alia, that the fees and expenses paid by the funds are
excessive and that the advisers and their affiliates inappropriately used fund
assets to distribute the funds and for other improper purposes.  On March 2,
2005, the actions were consolidated in the Massachusetts federal court as In re
Columbia Entities Litigation.  The plaintiffs filed a consolidated amended
complaint on June 9, 2005.  On November 30, 2005, the judge dismissed all
claims by plaintiffs and ordered that the case be closed.