No disclosure requirements for written solicitations by charities not using professional solicitors.
OREGON - O.R.S. § 128.891(2); O.R.S. § 128.893
Any written statement made in connection with a solicitation of contributions that the person or organization conducting the solicitation is registered or has filed, will file or is required to file any report with the Attorney General, or any statement of similar import, shall be immediately followed by a statement of equal prominence that such registration or report in no way constitutes or implies any endorsement, sanction or approval of the solicitation, its purposes, the manner in which it is conducted or the person or organization conducting it, by the Attorney General or any other governmental agency or officer. O.R.S. § 128.891(2)