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 Feb. 26, 1959, two angus cows and a bull were presented at -Stange Memorial Clinic with a history of overeating cracked corn. Physical examination revealed that a very loose, foul-smelling diarrhea was present with the hind parts of the cattle being red. The temperatures were normal. Severe tympanites was present.
"Rumen Engorgement in Three Bovine,"
Iowa State University Veterinarian: Vol. 22
, Article 16.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol22/iss2/16