Knight - The World and Thorinn (1979, 1980, 1981), Orbit 21 (1976, 1979), Orbit 20 (1975), Orbit 19 (1975), Box: 11, Folder: 20. 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/230304 Accessed May 07, 2024.