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 Jan. 15, 1952, a 12-year-old male Coonhound was presented to the Stange Memorial Clinic with a history of having eaten the rat poison, warfarin, five days previously.
Cotton, C. E.
Iowa State University Veterinarian: Vol. 14
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol14/iss3/11