"Introduction-Psychology and Science Fiction," "Extrapolation." The Future of Being Human: Psychology and Science Fiction. Editors Jackie Estrada and Dave Estrada. Canfield Press, San Crancisco, 1977, Box: 12a, Folder: 3. Papers of Theodore Sturgeon, MS 254. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/243844 Accessed May 13, 2024.