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
Veterinary Bacteriology, I. A. Merchant, D.V.M., Ph.D., C.P.H., Associate Professor of Veterinary Bacteriology and Hygiene, Iowa State College. 1st edition. Cloth bound, 636 pages, 135 illustrations. Collegiate Press, Inc., Ames, Iowa. 1940. Price $7.00.
Packer, R. A.
Iowa State University Veterinarian: Vol. 3
, Article 21.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol3/iss1/21