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
After two years of persistent effort to overcome material and labor difficulties, the installation of the most powerful x-ray therapy unit for use exclusively in the treatment of animal diseases has been completed in Stange Memorial Clinic of Iowa State College.
Allen, Philip R.
"Radiological Facilities At Iowa State College,"
Iowa State University Veterinarian: Vol. 11
, Article 2.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol11/iss2/2