BLACKROCK CALIFORNIA MUNICIPAL INCOME TRUST

Regulatory Filings • Oct 13, 2009

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SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant x Filed by a Party other than the Registrant ¨

Check the appropriate box:

| ¨ | Preliminary
Proxy Statement. |
| --- | --- |
| ¨ | Confidential,
for use of the Commission Only (as permitted by Rule
14a-6(e)(2)). |
| ¨ | Definitive
Proxy Statement. |
| x | Definitive Additional
Materials. |
| ¨ | Soliciting Material Pursuant to
Sec. 240.14a-12. |

BlackRock California Municipal Income Trust II

BlackRock California Investment Quality Municipal Trust Inc.

BlackRock California Insured Municipal Income Trust

BlackRock California Municipal Bond Trust

BlackRock California Municipal Income Trust

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment Of Filing Fee (Check the appropriate box):

| x | No
fee required. |
| --- | --- |
| ¨ | Fee computed on table below per
Exchange Act Rules 14a-6(i)(1) and 0-11. |
| 1) | Title
of each class of securities to which transaction
applies: |
| 2) | Aggregate
number of securities to which transaction applies: |
| 3) | Per
unit price or other underlying value of transaction computed pursuant to
Exchange Act Rule 0-11 (set forth the amount on which the filing fee is
calculated and state how it was determined): |

4) Proposed maximum aggregate value of transaction:

| ¨ | Fee
paid previously with preliminary materials. |
| --- | --- |
| ¨ | Check
box if any part of the fee is offset as provided by Exchange Act Rule
0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number,
or the form or schedule and the date of its filing. |
| 1) | Amount
Previously Paid: |
| 2) | Form,
Schedule or Registration Statement No.: |
| 3) | Filing
Party: |
| 4) | Date
Filed: |

BLACKROCK CALIFORNIA MUNICIPAL INCOME TRUST II

BLACKROCK CALIFORNIA INVESTMENT QUALITY MUNICIPAL TRUST INC.

BLACKROCK CALIFORNIA INSURED MUNICIPAL INCOME TRUST

BLACKROCK CALIFORNIA MUNICIPAL BOND TRUST

BLACKROCK CALIFORNIA MUNICIPAL INCOME TRUST

IMPORTANT REMINDER :

PLEASE VOTE YOUR SHARES BEFORE OCTOBER 26, 2009

Dear Shareholder:

We recently mailed you proxy materials relating to proposals to be voted on at a joint Special Shareholder Meeting of BlackRock California Municipal Income Trust II (“BCL”), BlackRock California Insured Municipal Income Trust (“BCK”), BlackRock California Municipal Bond Trust (“BZA”) and BlackRock California Municipal Income Trust (“BFZ”), each a Delaware statutory trust, and BlackRock California Investment Quality Municipal Trust Inc. (“RAA”), a Maryland corporation, to be held on Monday, October 26, 2009. As of the date of this letter, we have not received your vote.

YOUR VOTE IS IMPORTANT!

For the reasons set forth in the proxy materials previously mailed to you, each fund’s Board of Trustees or Board of Directors, as applicable, believe the proposals are in the shareholders’ best interest and unanimously recommend that you vote in favor .

We encourage you to vote TODAY using one of the following convenient options:

| 1. | Vote
by Phone . You may
cast your vote by calling the toll-free number listed on the enclosed
proxy card. Have your proxy card in hand in order to follow the
recorded instructions. |
| --- | --- |
| 2. | Vote
Online . You may
cast your vote by logging onto the Web address listed on the enclosed
proxy card. Have your proxy card in hand in order to follow the
instructions given on the Web site. |
| 3. | Vote
by Mail . You may
cast your vote by mail by signing, dating and mailing the enclosed proxy
card in the postage-prepaid return envelope
provided. |

If you have any questions about the proposal, you may call Computershare Fund Services, the Funds’ proxy solicitation firm; toll free at (866) 704-4427. As a helpful reminder, you may receive a call from a representative of Computershare Fund Services encouraging you to vote. When you provide instructions to Computershare Fund Services by phone, they will be authorized to deliver your proxy on your behalf.

YOUR VOTE IS IMPORTANT! PLEASE VOTE TODAY!