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
A Hereford cow, age 5 1/2 years, was admitted to Stange Memorial Clinic on Oct. 20, 1951, for sterility examination with a history of having been bred several times. The cow had been purchased and at the time of purchase was with calf. She gave 108 birth to a normal healthy calf, but would not conceive subsequently.
Moore, Meredith H.
"Cystitis in a Bovine,"
Iowa State University Veterinarian: Vol. 14
, Article 15.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol14/iss2/15