For the Good of the Farmer: A Biography of John Harrison ...
Frederick Whitford
Ruth W. Freehafer, R. B. Stewart and Purdue University (West Lafayette, IN: Purdue Research Foundation, 1983), 44. 16. IHS, letter to L. A. Pittenger, 16 February 1927. 17. IHS, letter to Addison Drake, 8 Ianuary 1927. 18. IHS, letter to Fred ...