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
More than 3,500 years ago there originated from the Libyan tribes of northern Africa, after a long and careful breeding period, a breed of horses known as the Arabians.
Hylton, Jack W.
"Thanks to Allah,"
Iowa State University Veterinarian: Vol. 3
, Article 6.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss2/6