OppenheimerFunds, Inc. Two World Financial Center 225 Liberty Street, 11th Floor New York, New York 10281-1008 June 2, 2008 The Board of Trustees Oppenheimer Rochester Double Tax-Free Municipals 6803 S. Tucson Way Centennial, CO 80112-3924 To the...

                            OppenheimerFunds, Inc.
                          Two World Financial Center
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June 2, 2008

The Board of Trustees
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To the Board of Trustees:

      OppenheimerFunds, Inc. ("OFI") hereby offers to purchase 10,000 Class A
shares, 100 Class B shares, and 100 Class C shares, of ▇▇▇▇▇▇▇▇▇▇▇ Rochester
Double Tax-Free Municipals (the "Fund"), at a net asset value per share of
$10.00 for such class, for an aggregate purchase price of $100,000.

      In connection with such purchase, OFI represents that such purchase is
made for investment purposes by OFI without any present intention of
redeeming or selling such shares.




                                    Very truly yours,

                                    OppenheimerFunds, Inc.

                                    By:
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                                    Executive Vice President and General
                                    Counsel