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
Dr. Thorp introduced his topic by emphasizing that in order to be of service to any branch of the livestock industry one must study that particular industry and become aware of the problems that it faces. Lamb feeding is done on a large scale in Colorado where Dr. Thorp has had wide experience studying the diseases of sheep. One-third of the lambs marketed in this country are fattened in the Colorado feedlots. Many of these lambs are shipped in from the ranges.
Hoyt, Harvey H.
"Dr. Thorp Speaks,"
Iowa State University Veterinarian: Vol. 3
, Article 5.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss2/5