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 Nov. 19, 1952, a six-month-old Shetland female colt was admitted to Stange Memorial Clinic with an enlarged, edematous, and hemorrhagic growth on its jaw. The only history available was that the owner had noticed its appearance about a month previous. The patient was quite active and alert. The growth did not hinder mastication nor affect the patient's appetite. Temperature, pulse, respiration, and bowel movements were within normal limits.
"Fibrosarcoma in a Shetland Colt,"
Iowa State University Veterinarian: Vol. 15
, Article 12.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol15/iss2/12