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
When the automobile replaced the driving and riding horse as a means of transportation and the tractor and truck began to replace the draft horse, the problem of lameness became progressively less important. Now with the return of the light horse to popularity the veterinarian is again confronted with this old-time problem.
Getz, Austin T.
"Lameness of Equines: Discussion of Most Common Types,"
Iowa State University Veterinarian: Vol. 9
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol9/iss2/4