Field data on virus diseases of potatoes, potato pest control, and the development of scab- and virus-resistant varieties of potatoes; also, a few letters, photographs, and word and number puzzles.

Scrapbooks containing ms. typescript, mimeographed, and printed reports on seed potato inspection, instructions to inspectors, lists of fields recommended or disqualified, letters to potato farmers, reports of a test made with New York State seed potatoes in Florida, graphs, and statistical tables; much of the material concerns the activities of the New York State Seed Improvement Cooperative Association and the New York State Potato Association.