Letter from Erwin S. Strauss of the M.I.T. Science Fiction Society to P. Schuyler Miller, May 31, 1966, Box: 13, Folder: 439. Papers of P. Schuyler Miller, MS 255. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/249464 Accessed May 14, 2024.