Peregrine Falcon (Falco peregrinus) and Chick from “Falcon Flight” by Ada and Frank Graham, ©1978, Dell Publishing, Box: 5, Folder: 22, item: 4. 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/310582 Accessed June 14, 2025.