Description: Papers of John H. Litchfield (1929- ), (M.S. 1954 and Ph.D. 1956 Food Technology and Microbiology) contains correspondence, publications, presentations, and patents concerning industrial microbiology, enzyme technology, advancing the science and technology of microbial production of food and food ingredients, food plant sanitation, food production and the Clean Water Act, and service as President (1991-92) of the Institute of Food Technologists.