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 Oct. 4, 1958, an 8-year-old spayed female dog of the Pomeranian type was presented to Stange Memorial Clinic. The dog had a very stiff, tense neck which could not be moved without the animal eliciting extreme pain. The condition had first appeared last April and became progressively worse.
Maahs, Robert L.
"Cervical Arthritis in the Dog,"
Iowa State University Veterinarian: Vol. 21
, Article 12.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol21/iss2/12