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
Polydactylia, the presence of supernumery digits on the leg, has been reported in the world literature. However, since it is not often seen, we felt it would be of interest to report a case brought to the I.S.U. Veterinary Clinic.
Amdor, John E.
Iowa State University Veterinarian: Vol. 27
, Article 6.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol27/iss2/6