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 2-year-old American Saddle stallion was admitted to Stange Memorial Clinic on June 15, 1949, with a growth protruding laterally from the pastern region on the right front foot. According to the owner, the neoplasm had been growing slowly for several months. The owner wished the patient castrated in addition to removal of the neoplasm.
"Fibroma Removal by Cautery,"
Iowa State University Veterinarian: Vol. 12
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol12/iss1/11