Abstract The Peter DeLafosse papers (1907-1999) consists of correspondence, manuscripts, diary entries, articles, biographical materials, and collection registers pertaining to the life of Charles Kelly (1889-1971). Kelly, a historian of the American west, was an author of a book on trails in the western salt desert in Utah and Nevada, and wrote biographies of Porter Rockwell, Caleb Greenwood, and Miles Goodyear.