Laumer - Retief (1977), Star Colony (1977), Fort Ancient (1977), World of the Imperium (1977), Bolo (1976), The Ultimax Man (1976), Box: 12, Folder: 37. 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/230373 Accessed November 23, 2024.