Gould - Partridges, with notes on the Gould-Audubon relationship, Box: 20, Folder: 15-16. 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/204706 Accessed January 14, 2025.