Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
On Feb. 4, 1954, a 2-year-old Shorthorn heifer was admitted to the clinic with the history of being bred 3 months previously by a bull that was reportedly settling other cows in the herd. Six weeks later, there was a persistent discharge from the genital tract.
"White Heifer Disease,"
Iowa State University Veterinarian: Vol. 17
, Article 9.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol17/iss1/9