The Henry A. Wallace Beltsville Agricultural Research Center (BARC), also known as the National Agricultural Research Center, is a unit of the United States Department of Agriculture's Agricultural Research Service. It is located in unincorporated Prince George's County, Maryland, with sections within the Beltsville census-designated place. The BARC is named for Henry A. Wallace, former United States vice president and secretary of agriculture. BARC houses the Abraham Lincoln Building of the National Agricultural Library.