Heffner, Henry, Hearing in Large Mammals, #BNS78-07391, Grant Award, 1978, Box: 42, Folder: 15. 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/454039 Accessed July 14, 2025.