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 one week old Shetland colt was admitted to Stange Memorial Clinic on September 12, 1959 with a suspected inguinal hernia. Symptoms consisted of a hot, hard, and painful bilateral enlargement of the scrotum. The right side was larger than the left. The animal was depressed and weak.
"Orchitis in a Week Old Shetland Colt,"
Iowa State University Veterinarian: Vol. 22
, Article 12.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol22/iss1/12