- Black Diamond Museum - Tools and equipment from coal mining, and household items from life 100 years ago.
- Chewelah Museum - Features a collection of over 800 photographs of the area, mining equipment, historic radio equipment, a telephone directory display, and local artifacts. Includes hours and directions to the location in Chewelah, WA.
- Kittitas County Historical Museum - Non-profit organization dedicated to collecting and preserving artifacts of the region. Includes a directory of staff members and volunteers, events, hours, a list of members, a membership form, and volunteer opportunities. Located in Ellensburg.
- Pacific County Historical Society and Museum - Private, nonprofit, charitable organization devoted to preserving and presenting the history of this region. Includes a virtual tour, FAQs, hours, and directions to the location in South Bend.
- The Lewis County Historical Museum - Depicts the early settlements and pioneer life in the area, one of the first areas settled in the region and the oldest county in Washington State.
- Washington State History Museum - Explore the museum's Hall of Washington History and discover a new view of the past, from frontier towns to modern technology. Includes events, programs, membership details, and publications. Located in Tacoma.
- Whatcom Museum of History and Art - Dedicated to the collection, preservation, exhibition and interpretation of this region's art and cultural history. Includes information about tours, research grants, collections, a gift shop, and employment opportunities. Located in Bellingham.
- Yakima Valley Museum - Offers displays focusing on natural history, Native American culture, early pioneer life, and the roots and development of the Valley's fruit industry. Includes events, memberships, programs, hours, tours, and directions.
