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 Sept. 23, 1951, a 9-year-old female Collie was admitted to the Stange Memorial Clinic. Iowa State College Veterinarian This case was referred to the clinic by a local veterinarian with a history of the abdomen filling with fluid and difficulty in urinating and defecating.
"Removal of a Cyst from the Neck of the Bladder of a Dog,"
Iowa State University Veterinarian: Vol. 14
, Article 14.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol14/iss2/14