Wash. Admin. Code § 434-120-135
(1) All charitable organizations registered under this act shall keep records of all contributors to the organization for three years. If a commercial fund-raiser manages a campaign for a charitable organization, either the commercial fund-raiser or the charitable organization must be the entity responsible for maintaining the contributor records for that campaign. These records shall include the names of the following contributors:
[Statutory Authority: Chapters 11.110, 19.09, and 43.07 RCW. WSR 14-17-025, § 434-120-135, filed 8/12/14, effective 9/12/14. Statutory Authority: RCW 19.09.075, [19.09.]079, [19.09.]097, and [19.09.]520. WSR 12-14-114, § 434-120-135, filed 7/5/12, effective 8/5/12. Statutory Authority: RCW 19.09.540 and 43.07.125. WSR 10-22-048, § 434-120-135, filed 10/28/10, effective 11/28/10. Statutory Authority: Chapters 34.05, 19.09, 11.110 and 43.07 RCW and 1993 c 471. WSR 94-01-004, § 434-120-135, filed 12/1/93, effective 1/1/94.]