Letter from P. Schuyler Miller to Henry Holt, Inc, "The Reference Library," Astounding Science Fiction, April 13, 1953, Box: 16, Folder: 696. Papers of P. Schuyler Miller, MS 255. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/249717 Accessed December 21, 2024.