Northern (Alaska) Fur Seal (Callorhinus ursinus) - BK-53, ©1986, Box: 5, Folder: 13, item: 5. Natural History Art and Illustration by D. D. Tyler, MS 337. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/310529 Accessed June 16, 2025.