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 September 26, 1959, a ten year old, male dog of mixed breeding was admitted to Stange Memorial Clinic for repair of a bilateral perineal hernia. The condition was diagnosed by a veterinarian in private practice and was referred for surgical repair.
"Repair of a Bilateral Perineal Hernia in a Dog,"
Iowa State University Veterinarian: Vol. 22
, Article 9.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol22/iss2/9