Typescript copies of Gould Correspondence, [1840, 1841, 1839, 1857, 1880, 1878, year?], Box: 1, Folder: 21. 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/204302 Accessed May 19, 2024.