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
In the annals of canine surgical history, the case of a two and one-half months old collie pup and his stomach full of nails will hold a unique position. The patient, was presented with a history of having swallowed twenty roofing nails after discovering the family tool box in the cellar.
Grell, H. A.
"Nails in Stomach of a Dog,"
Iowa State University Veterinarian: Vol. 4
, Article 13.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol4/iss2/13