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 March 20. 1950, a two year old Guernsey bull was admitted to Stange Memorial Clinic with a large pendulous growth on the left side of the throat near the midline and approximately four in. posterior to the angle of the mandible. This growth had first been noted 30 days before being brought to the clinic and had increased rapidly in size during this 30 day period. The growth appeared to involve the skin only; however, it was very vascular and hemorrhaged easily when traumatized.
Downard, J. A.
"Actinobacillosis in a Bull,"
Iowa State University Veterinarian: Vol. 12
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol12/iss3/11