TAX-FREE TRUST OF OREGON

                       Supplement to the Prospectuses and
                       Statement of Additional Information
                             Dated January 31, 2006


         On June 1, 2006 the Aquilasm Group of Funds launched a new mutual fund
called "Aquila Three Peaks High Income Fund" ("Three Peaks"). Three Peaks is
designed for long-term investors who primarily seek high current income.

         The materials in the prospectuses and Statement of Additional
Information relating to the Trust's exchange privilege are supplemented as
follows:

         The Board of Trustees of the Trust has approved the addition of Three
Peaks to the list of Aquila funds into which shares of Tax-Free Trust of Oregon
may be exchanged. Similarly, shares of Three Peaks may be exchanged into shares
of the Trust.

         All exchanges are subject to the terms of the Trust's exchange
privilege. Before exchanging your shares into Three Peaks, or any of the other
Aquila funds, you should read about and carefully consider the investment
objectives, risks, charges, expenses and other information found in the fund
Prospectus.

                         The date of this supplement is
                                  June 16, 2006