Davidson, Richard. Glass Roads. New York: Home Planet Publications, 1976

Davidson, Richard. Glass Roads. New York: Home Planet Publications, 1976, Box: 5, Volume: 6. Midwest Distributors records, RH MS 949. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/574141 Accessed January 01, 2026.