Harrison - Wheelworld (1974), Four for the Future (1969), How to Buy a Swimming Pool (1973), John W. Campbell Memorial Anthropology (1971), Box: 9, Folder: 36. 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/230253 Accessed May 16, 2024.