References
- HASTINGS, M. M. (1909a) The Egg Trade of the United States. US Government
- HASTINGS, M. M. (1909b) The Dollar Hen. Arcadia Press, New York
- HASTINGS, M. M. (1915) A million chicks to the acre. Scientific American 18 September: 247–260
- PAUL, G. F. (1913) Hatching chickens wholesale. Technical World, Chicago 19: 248–249
- PAYNE, L. F. (1962) History of the Department of Poultry Husbandry 1900–1960. Kansas State University Press, Manhattan
- SUPREME COURT OF THE UNITED STATES (1936) 301 US 216–233
- UNITED STATES PATENT 911875, 9 January 1909