Collection consists of a typescript, "Captain Nathaniel J. Wyeth's Journey up the Deschutes River in 1834-35," 7 pages, undated, regarding the plotting of a trail that differs from that of the Ralph Shane maps. Also included is a typescript letter to Thomas Vaughan, January 31, 1971, regarding corrections in plotting Peter Skene Ogden's 1824-1826 expeditions in Snake Country.