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
When can a farmer discontinue feeding milk to his calves? Directions which accompany so-called milk substitutes frequently suggest discontinuing the milk when the calf is ten days to two weeks of age, while most dairy husbandry bulletins recommend six months. How far can we "lean to the left" in these days of limited rations, and still obtain normal mature animals?
"Problems of Calf Feeding,"
Iowa State University Veterinarian: Vol. 6
, Article 2.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol6/iss2/2