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
Margaret Wragg Sloss always liked to begin her lectures with a joke-like this one. "The city boy came to visit his country cousin and found him in the barn milking a big cow and holding the pail between his legs. 'Come in,' he said. 'Would you like to learn how to milk a cow? I'll show you.' The city boy hesitated, then replied, 'Gee, thanks, but could I start with a calf?"
Brown, Suzanna and Stalheim, O. H.V.
"Dr. Margaret Wragg Sloss: The Past and Future of Women in Veterinary Medicine,"
Iowa State University Veterinarian: Vol. 62
, Article 2.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol62/iss2/2