Pearson Air Museum is a National Park Service museum at Pearson Field within Fort Vancouver National Historic Site, interpreting one of the United States' oldest continuously operating airfields and the early Pacific Northwest history of flight. Exhibits connect Pearson's Army and military-aviation service, the internationally significant World War I Spruce Production Division mill site and the 1937 Soviet transpolar landing; the collection includes four historic aircraft and a hands-on replica DH-4 Liberty Plane cockpit. The museum also supports airfield-history education and community programmes. The current NPS visitor page lists year-round hours Tuesday–Saturday 09:00–16:00 and always-free admission; free parking is available in the adjacent lot and on E 5th Street. Pets are not allowed inside but may be outside on a leash; service animals are permitted. An accessible entrance, one-floor main gallery, elevator to the mezzanine, accessible restrooms and loan wheelchairs support visits. Front desk: (360) 816-6232. Address: 1115 East 5th Street, Vancouver, Washington 98661, United States.