"Excalibur," Incomplete typescript of "Excalibur and the Atom." Includes extensive correspondence between Sturgeon and Terr Carr, Ace Books, Box: 12a, Folder: 21. Papers of Theodore Sturgeon, MS 254. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/243863 Accessed May 13, 2024.