The Fort Walla Walla Collection contains assembled records relative to the military fort, including historical sketches, and printed material. This collection, which dates from 1832 through 1997, also includes newspaper clippings, photographs, and scrapbooks. There are also unpublished manuscripts and copies of letters found in various archives. Included are materials related to the earlier fort of the fur traders era (Fort Nez Perce) and to Michael Kenny's reminiscences of his experiences with Colonel Edward J. Steptoe's expedition of 1858.