Robert Steelman - correspondence (1975) - Ambush at Three Rivers (1964), Dakota Territory (1973), The Fox Dancer (1974, 1975), Winter of the Sioux (1975), Fay Stanley - Portrait in Jig-Saw (1972), Box: 21, Folder: 25. Corporate Papers of the Robert Mills Literary Agency, MS 307. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/229871 Accessed April 29, 2024.