The administrative headquarters of the Washington state historical society is located at the Washington State History Museum, 1911 Pacific Avenue, Tacoma, WA 98402, (253) 272-3500. The office is open each day for the transaction of business from 8:00 a.m. to 5:00 p.m., Monday through Friday, excluding legal holidays.
Wash. Admin. Code § 255-01-060
Statutory Authority: RCW 43.17.250. 98-07-071, § 255-01-060, filed 3/17/98, effective 4/17/98.