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
On Sept. 25, 1952, a fetus was presented to the Iowa State Diagnostic Laboratory for examination of a possible cause of the abortion. The fetus was from a Holstein cow that was about seven and one half months along in her gestation period. This was the second abortion to occur under similar circumstances within ten days.
Lang, Merle H.
"Abortion Due to Fungi,"
Iowa State University Veterinarian: Vol. 15
, Article 13.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol15/iss2/13