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
Photography also provides the professional medical individual, in this case the veterinarian, with an additional recording system. It allows him to adequately record and demonstrate important patient progress (the classical before and after sequence). It provides him with visual emphasis to support written and verbal reports of selected medical-surgical cases.
Hillmann, Daniel J.
"Photography for the Veterinarian,"
Iowa State University Veterinarian: Vol. 33
, Article 7.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol33/iss3/7