Simak - Correspondence (1980-[19]81) - Way Station (1965, 1966, 1967, 1972, 1974, 1975, 1977, 1978, 1979, 1980), Box: 20, Folder: 12. 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/230630 Accessed May 15, 2024.