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 small Holstein cow, age 4 years, was admitted to Stange Memorial Clinic, Feb. 3. 1948. She had been in labor since early that morning.
"A Giant Bovine Fetus,"
Iowa State University Veterinarian: Vol. 10
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol10/iss3/11