Letter from Nicholas Aylward Vigors, June 7, 1832 (Zoological Society, 33 Bruton Street), Box: 24, Folder: 38. Letters, literary manuscripts, and personal papers of the Porter family, MS 28. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/467283 Accessed March 13, 2025.