USDA Molecular Plant Pathology Laboratory Photograph Collection

The USDA Molecular Plant Pathology Laboratory Photograph Collection includes photographs, associated notes, and a record book on various U.S. Department of Agriculture (USDA) activities and personnel, dated between 1888 and 1968. The collection contains a series of photographs related to testing insecticide spraying apparatuses on different crops between 1912 and 1944. Much of the collection consists of photographs of employees from departments of Plant Industry and Plant Pathology, and other unidentified individuals and departments. Also included are photographs of the USDA experimental facility at Arlington Farm in Arlington, Virginia, before it was closed in the 1940s. Also in the collection is a 1925 record book on seed treatment data from Rocky Ford, Colorado. More recent handwritten notes, possibly on the use of these historical documents in later research, are inserted in the photographs and record book.