SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

(Amendment No. )

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[  ]   Definitive Proxy Statement

[X]   Definitive Additional Materials

[  ]   Soliciting Material Pursuant to Section 240.14a-12

THE CASH MANAGEMENT TRUST OF AMERICA

______________________________________________

(Name of Registrant as Specified In Its Charter)

__________________________________________________________

(Name of Person(s) Filing Proxy Statement, other than the Registrant)

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[  ]   Fee paid previously with preliminary materials.

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[logo – American Funds ®]

The Cash Management Trust of America

The U.S. Treasury Money Fund of America

IMPORTANT REMINDER:

 PLEASE VOTE YOUR SHARES BEFORE JUNE 15, 2009

Dear Shareholder:

We recently mailed you proxy materials relating to proposals to be voted on at a Special Meeting of Shareholders of The Cash Management Trust of America, and The U.S. Treasury Money Fund of America, scheduled for June 15, 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 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 American Funds Service Company toll free at (800) 421-0180.  As a helpful reminder, you may receive a call from a representative of Computershare Fund Services, the Funds’ proxy solicitation firm, 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!