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
The fattening of lambs with feeds grown on Colorado's irrigated farms has become an important industry since its start in 1889' as an emergency measure toward furnishing a market for the abundance of alfalfa hay produced. At the present time, in her four principal lamb feeding sections, Colorado fattens normally 32 percent of the total sheep and lambs fattened during the winter feeding season in the entire United States.
Osland, H. B.
Iowa State University Veterinarian: Vol. 3
, Article 5.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss3/5