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
Eighty-three Holstein calves were shipped interstate by truck from Wisconsin to an Iowa farm on February 22, 1962. The length of time that the calves were enroute is unknown, but the total distance was between 300 and 400 miles.
Baker, John D.
"Salmonellosis in the Bovine,"
Iowa State University Veterinarian: Vol. 25
, Article 6.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol25/iss1/6