Heffner, Henry, Hearing in Large Mammals, #BNS78-07391, KU# 4802, $50, 761, May 1, 1978-October 31, 1980, Box: 42, Folder: 14. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/454038 Accessed May 18, 2025.