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
For over a hundred years animal shave been used for research in America. Until the 1920's little attention was given to the maintenance, husbandry, nutrition and diseases of experimental animals. Biological research workers have always realized the importance of maintaining high standards of quality in their research and in recent years these high standards have been extended to their experimental animals.
Schollmeyer, Michael and Flatt, Ronald E.
"Training Programs for Veterinarians in Laboratory Animal Medicine,"
Iowa State University Veterinarian: Vol. 33
, Article 14.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol33/iss2/14