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. 18, 1951 a male, mixed Shetland pony 2-years-old was admitted to the clinic with the history of having a nail run into his left hind foot some time ago.
Hennager, C. G.
"Streptococcus Infection in a Pony,"
Iowa State University Veterinarian: Vol. 13
, Article 14.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol13/iss2/14