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
Shetland ponies seem to be becoming increasingly popular as pets and as show animals. With certain important exceptions, usually due to their size and to the husbandry practices of the owners, the problems encountered in treating ponies are comparable to those encountered in larger horses.
Lundvall, Richard L.
"Shetland Pony Practice,"
Iowa State University Veterinarian: Vol. 21
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol21/iss1/4