Willett , E.L. and G.W. Salisbury. "The effect of various diluters, cooling rate, temperature of storage, and some other factors, on the livability of spermatozoa in stored samples of bull semen." Cornell University Agricultural Experiment Station, Memoir 249, November 1942.

Willett , E.L. and G.W. Salisbury. "The effect of various diluters, cooling rate, temperature of storage, and some other factors, on the livability of spermatozoa in stored samples of bull semen." Cornell University Agricultural Experiment Station, Memoir 249, November 1942., Box: 5. Veterinary Reprint and Pamphlet Collection, 24-4-3369. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/263327 Accessed December 24, 2025.