Typescript copies of Gould Correspondence, [1868, 1869, 1870, 1871, 1876, 1834, 1835, 1837, 1841], Box: 1, Folder: 11. 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/204292 Accessed May 27, 2024.