Additionally, the museum is home to many local and photographs from the 19th century which showcase the prosperous dairy industry.
[2] Models of the Mosquito Fleet, along with records of the Dungeness Wharf, Washington Harbor, and Port Williams serve as reminders of the early primary transportation to the region.
The DeWitt Building also houses the Whatton Library for Historical Research, the Vollenweider Archives, the Robert Cooper Photography Studio, and the John & Inez Cowan Collection.
The Sequim Museum operates and maintains the historic Dungeness School (available for rentals), Captain John Morris House and Washington Harbor Schoolhouse.
The museum is a 501(c)(3) private nonprofit organization, supported by membership fees, donations, bequests, and grants.