Harrison - One Step From Earth (1969), Pigs Make the Best Cheesecake (1963), A Plague of Demons (1963), Plague From Space (1964), Box: 9, Folder: 22. 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/230239 Accessed November 23, 2024.