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 yearling Hereford steer was admitted to Stange Memorial Clinic January 12, 1949, with a history of inability to micturate, and a large subcutaneous swelling to the left of the ventral midline and about 2 inches posterior to the preputial orifice. Examination revealed the swelling to be soft and fluctuating. A diagnosis of urethral calculi was made.
Erickson, J. W.
"Section of the Penis,"
Iowa State University Veterinarian: Vol. 11
, Article 15.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol11/iss2/15