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
A male dog, one year old, was brought to the clinic on March 19, 1941. The history received was that the dog had a slight discharge from its left eye, and that the owner had recently cut some hair that was protruding between the eyelids.
Gathman, A. C.
Iowa State University Veterinarian: Vol. 4
, Article 9.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol4/iss2/9