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
The introduction of exotic breeds of cattle into the United States has begun to accelerate within the last ten years. It is almost impossible to keep up with the breed names. Although most of these breeds have existed for many years in Europe,, they are now being found to have potential in crossbreeding with the beef breeds that are more familiar within the United States.
"An Overview of the Exotic Breeds of Cattle,"
Iowa State University Veterinarian: Vol. 36
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol36/iss3/4