Sphere Books - correspondence (1972-[19]76) - Peter Tremayne - The Ants (1978), John Laffin - The Daggers of Islam (1980), Paul Stevens - Complete Book of Home Expansion (1974), Box: 21, 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/229868 Accessed April 29, 2024.