As part of the U.S. Department of Agriculture (USDA) National Agricultural Library, Special Collections preserves and provides access to manuscripts and archival materials related to the history of agriculture and the USDA. These collections document the work of USDA from the 19th through the 21st centuries, as well as non-USDA agricultural activities and organizations related to agriculture. Materials found in these collections include correspondence, field notes, journals, photographs, publications, posters, and other items. For more information or to schedule a research visit, please contact Special Collections.