Papers relating to the activities of the various members of the Robert H. Peebles family of Pittsburgh, Pa; includes letters, contracts, and other material concerning Peebles' transactions (1829-1845) in provisioning U.S. troops at Fort Gibson, Ok., Fort Snelling, Mn., and Fort Towson, Ok. Also, papers relating to the land interests of William R. Dickinson near Steubenville, Oh.; letters about Texas land claims; and genealogical records of Peebles, Dickinson, and Johnston families.