Typescript copies of Gould Correspondence, [1861, 1862, 1863, 1865, 1866, 1867], Box: 1, Folder: 10. 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/204291 Accessed May 27, 2024.