The USDA Bureau of Plant Industry Horticultural and Pomological Investigations Records contain black and white photographs, acetate and glass negatives, glass slides, drawings, note cards, project reports, research records, and correspondence related to research on small fruits and nuts from the U.S. Department of Agriculture (USDA) Fruit Laboratory. Examples of topics include experimental fruits, fruit varieties, plant anatomy, breeding, crossing, diseases, insects, irrigation, handling, pruning, harvesting, and marketing. Many photographs were taken in Beltsville and Glenn Dale, Maryland. A subset of this collection consists of 350 images depicting grapevines and grounds of the USDA's Oakville (California) Experimental Winery (now the property of the University of California). Additional photographs exist of other grapevine research done by USDA in various parts of the United States. These materials complement the USDA Bureau of Plant Industry Wine Research Collection (collection number 288) housed in Special Collections, National Agricultural Library.