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
No branch of animal production has developed more rapidly in the past ten years than has the raising of furbearing animals. The profits derived from the sale of pelts as well as the prices paid for breeding animals have greatly stimulated interest in this field. But besides the money angle, the raising of fur-bearing animals is an extremely interesting occupation.
Kjar, H. C.
Iowa State University Veterinarian: Vol. 5
, Article 8.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol5/iss1/8