Description: Papers of Donald Holt (1932- ) (B.S. 1954, M.S. 1956), Director of the Agriculture Experiment Station (1983- ), containing correspondence concerning the Agriculture Experiment Station, the American Society of Agronomy, the Agricultural Satellite Corporation, North Central Association of Experiment Station Directors, and other review boards and committees relating to sustainable agriculture, the Potash and Phosphate Institute, and the relationship of technology to extension service.