Hawaiian Tax-Free Trust

The Cascades Trust

Aquila Tax-Free Trust of Oregon

Supplement Dated May 24, 2019

to each Trust's Summary Prospectus and Prospectus

The following disclosure is added to the cover page of each Trust's Summary Prospectus and Prospectus:

Beginning in March 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Trust's shareholder reports will no longer be sent by mail, unless you specifically request paper copies of the reports. Instead, the reports will be made available on the Trust's website, and you will be notified by mail each time a report is posted and provided with a website link to access the report.

If you already receive shareholder reports electronically, you will not be affected by this change and need not take any action. You may elect to receive shareholder reports and other communications electronically by contacting your financial intermediary (i.e. broker dealer or bank) or, if you invest directly with the Trust, by calling 1-800-437-1000.

You may elect to receive all future reports in paper free of charge. If you invest directly with the Trust, you can inform the Trust that you wish to continue receiving paper copies of your shareholder reports by calling 1-800-437-1000. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue to receive paper copies of your shareholder reports. Your election to receive reports in paper will apply to all funds held in your account if you invest through a financial intermediary or all funds held with the Aquila Group of Funds if you invest directly.

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