Fried, Emanuel. Drop Hammer. USA: United Printers, 1963

Fried, Emanuel. Drop Hammer. USA: United Printers, 1963, Box: 1, Volume: 14. Midwest Distributors records, RH MS 949. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/573888 Accessed January 02, 2026.