Ponca Reservation, Joseph Band 1878 - 1885
"Indian Territory, Showing Location of Kansas, Nez Perces, Pawnee, Poncas and Osages" (map). In U. S. House. 46th Congress, 2d Session. Annual Report of the Secretary of the Interior, 1879 (H.Ex.Doc.1, Pt. 5, Vol. 1). Washington: Government Printing Office, 1880. (Serial Set 1910).