"Lysorophus--L. Perm" [articles on copying and photographing fossils, correspondence], 1982-1983, undated, Box: 4, Folder: 6. Personal papers of Larry D. Martin, PP 630. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/494443 Accessed December 02, 2024.