Black Knight. New York, N.Y.: Margood Publishing Corp., May 1955

Black Knight. New York, N.Y.: Margood Publishing Corp., May 1955, Volume: Gilbert D115. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525316 Accessed December 27, 2025.