Monarch Butterfly (Danaus plexippus) - Fold-over card, ©1990, Box: 5, Folder: 16, item: 3. 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/310550 Accessed June 24, 2025.