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 February 27, 1945, a 4-year-old mare was presented to the Stange Memorial Clinic. A swelling on the right side of the face had been noted the previous day. The tongue was swollen and she was unable to open her mouth. The temperature was normal and the general condition good.
Innes, John L.
"Dental Involvements in the Equine,"
Iowa State University Veterinarian: Vol. 7
, Article 14.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol7/iss4/14