Tolong jelaskan mengenai Operator dari Curtiss NC dalam bahasa melayu

Steirman, Hy and Glenn D. Kittler. The First Transatlantic Flight, 1919, (originally Triumph). New York: Richardson & Sterman, 1986, first edition 1961. .

Taylor, Theodore. The Magnificent Mitscher. Annapolis, Maryland: Naval Institute Press, 1954. .

Wagner, Ray. American Combat Planes. New York: Doubleday, 1982, .

Contemporary technical description of the NC-1 in its original three-engine configuration, with photographs and drawings.