The collection of materials on microfilm, copied from materials of Miss Jean Rumsey, contains seven published works, miscellaneous clippings, photographs, and correspondence of the Crawford sisters. The published works include the history of the Idaho mission, sign language translations by Mr. Levi W. Jonas, Nez Perce superintendent of the Kamiah church, and In-go-nom-pa-shi.

Meriwether Lewis and William Clark were explorers. This collection contains the manuscript journals kept by Lewis and Clark on their travels to the source of the Missouri River and across the continent to the Pacific Ocean. There are interlineations throughout by Nicholas Biddle, who published his narrative "History of the Expedition of Captains Lewis and Clark" (1814).

The Virginia D. Hymes Papers focus primarily on the Sahaptin language research of Virginia Hymes and several others between the 1970s and 1980s. They contain several extensive lexical card files of Sahaptin, original field notes, Sahaptin texts and a dictionary, notes toward an unpublished dissertation, works by others (especially Eugene Hunn, David and Kathrine French, and Bruce Rigsby on Sahaptin, and Noel Rude on Nez Perce/Niimi'ipuutímt), and smaller amounts of teaching files, conferences, correspondence, and personal and administrative files.