Blish - Correspondence (1979) - Survivors (1965), Warriors of Day (1976-[19]77), Book on Witchcraft (1969), Box: 2, Folder: 53. 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/230022 Accessed May 18, 2024.