木匠正在田納西州道格拉斯水壩 (Douglas Dam) 上頭工作：水壩幫助水力發電廠從奔流的河水取得更多水力

出處: Palmer, Alfred T. photographer. "Carpenter at Work on Douglas Dam (TVA), Tennessee." June 1942. America from the Great Depression to World War II: Color Photographs from the FSA-OWI Collection 1939-1945. American Memory collections, Library of Congress.