"A Comparative Study of the Chromosomes of the Norway Rat and the Black Rat" by Pincus, Gregory, 1927

"A Comparative Study of the Chromosomes of the Norway Rat and the Black Rat" by Pincus, Gregory, 1927, Box: 2, Folder: 19. Personal papers of John "Jack" A. Weir, PP 404. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/261241 Accessed December 24, 2025.