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 July 9, 1943, a 9-week-old Boston Terrier female was presented at the Stange Memorial Clinic with a history of a good appetite but repeated vomition for the past week. This symptom became evident after the diet was changed from liquid to solid. Extreme emaciation and dehydration were apparent.
"Congenital Esophageal Stenosis,"
Iowa State University Veterinarian: Vol. 6
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol6/iss1/11