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
On December 29, 1942, the Veterinary Pathology Department of Iowa State College received three nematodes from Dr. J. S. Dick, Jr., Minneapolis, Minn. These worms were taken from the eye of a nine-year old female Samoyede. The owner stated that the dog was with him in California during the past summer and the worms were observed in the dog's eye about three weeks before their removal by Dr. Dick. They were identified by Dr. E. A. Benbrook as Thelazia californiensis, the eye worm of the dog. This is the first time this parasite has been reported outside of California, where they were apparently acquired by this dog.
Kjar, Harold A.
"Eye Worm of the Dog,"
Iowa State University Veterinarian: Vol. 5
, Article 9.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol5/iss3/9