"Birdscape", Cornell Lab of Ornithology, Vol. 14, No. 3-4; Vol. 15. No. 2-4; Vol. 16, No. 1-2, 2000 - 2002, Box: 9, Folder: 1. Sauer's Gouldiana Research about John Gould and other papers, MS 304. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/204193 Accessed May 19, 2024.