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
A Brown Swiss cow from a local herd of 60 head was admitted to Stange Memorial clinic on Feb. 5, 1950, with a history of being off feed, circling to the right and with being a possible rabies suspect. Another animal in the herd had died previously with similar symptoms.
Jensen, Loyd A.
"A Case of Clinical Listerellosis,"
Iowa State University Veterinarian: Vol. 12
, Article 16.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol12/iss3/16