"Birdscape", Cornell Lab of Ornithology, Vol. 11, No. 3; Vol 12, No. 2-4; Vol. 13, No. 3, 1997 - 1999, Box: 9, Folder: 2. 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/204194 Accessed November 24, 2024.