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 August 21, 1954, a horse was admitted to the Stange Memorial Clinic showing a granulamatous swelling on the penis.
"Habronemiasis of the Penis,"
Iowa State University Veterinarian: Vol. 17
, Article 12.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol17/iss3/12