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. 2, 1953, a six-year-old Brown Swiss cow was admitted to Stange Memorial Clinic with a history of having been bloated for three days. A trocar and cannula had been inserted in the left paralumbar fossa in the field and the cannula was still in place when the patient entered the clinic.
Smith, John E.
"Impaction of the Fore-Stomachs and Abomasum in a Cow,"
Iowa State University Veterinarian: Vol. 15
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol15/iss3/11