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
Dr. W. C. Merritt, Fort Dodge, Iowa, who has been doing some work in artificial insemination, sent us this picture of Test Tube Ormsby Sir Bessie, his first test tube calf, born Dec. 22,1940. This calf was sired by Femco Sir Bessie Cecelia 752588 owned by Mr. Herbert Porter (on the right in the photograph) and the dam was Verla Posch Ormsby ana Inka 1959376 owned by Mr. Ernie Schmobes
Christensen, L. T.
"Test Tube Calf,"
Iowa State University Veterinarian: Vol. 3
, Article 16.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss2/16