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
An eight-year-old yellow Labrador was referred to the Iowa State University Veterinary Clinic on September 24, 1961, with a history of posterior asthenia and incoordination. Chronic nephritis had been diagnosed a month previously and since that time the dog had become progressively weaker and wobbled considerably. Occasionally, he would lie and howl.
Burt, James K.
Iowa State University Veterinarian: Vol. 24
, Article 9.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol24/iss1/9