Dickson - Capsule (1970), Combat SF (1970), Computer's Don't Argue (1972, 1976), Dace Plague (1973), Danger-Human (1967), Delusion World (1961), Box: 5, 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/230132 Accessed May 18, 2024.