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 August 5, 1970, an eight-year-old Collie was admitted into Stange Memorial Clinic with a growth on the thorax adjacent to the right leg. The subcutaneous mass was very hard and about 7 cm. in diameter.
"An Extraskeletal Osteosarcoma,"
Iowa State University Veterinarian: Vol. 32
, Article 15.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol32/iss3/15