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 Aug. 31, 1940, a three year old Pekingese bitch was presented for a pedicure. While clipping the nails it was noticed that the bitch was dribbling urine. The owner stated that this had been going on for about a month. The abdomen was palpated and a large object felt in the posterior abdominal region. A diagnosis of cystic calculus was made.
"Cystic Calculus in a Bitch,"
Iowa State University Veterinarian: Vol. 3
, Article 13.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss1/13