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 annual junior class trip to drug houses began Sunday morning, March 2, 1975, at 7:00 a.m., when 56 students, two instructors, and two wives boarded two charter buses, taking them to places where few of them had ever been before. The first two days were spent at Eli Lilly and Company in Indianapolis, one day at Abbott Labs in North Chichago, and the final day at the Upjohn Company in Kalamazoo, Michigan.
"Visit to Pharmaceutical Firms,"
Iowa State University Veterinarian: Vol. 37
, Article 6.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol37/iss2/6