The Curtiss XP-40 Warhawk fighter undergoes drag-reduction testing in the full-scale wind tunnel at Langley Research Center in 1939. (NASA Photograph.)
Category - black-and-white
A Luftwaffe FW 190 fighter shot down by 9th Air Force Mustangs over the American sector in Normandy in July 1944. (U.S. Air Force Photograph.)
B-26 Marauder recognition sheet. (U.S. War Department.)
A U.S. Navy Martin AM-1 Mauler attack aircraft in flight at the Naval Air Test Center (NATC) at Naval Air Station Patuxent River, Maryland. (U.S. Navy Photograph.)
A Douglas OA-4A Dolphin photographed at the Langley Aeronautical Laboratory in September 1938. (NASA Photograph.)
Test installation of a triple rocket launcher mounted on a P-38 Lightning. (U.S. Air Force Photograph.)
Douglas A-20H with an extended-range fuel tank mounted in the bomb bay. (U.S. Air Force Photograph.)
Ryan FR-1 Fireball aircraft of U.S. Navy Fighter Squadron 66 (VF-66) aboard the aircraft carrier USS Ranger (CV-4) in May 1945. (U.S. Navy Photograph.)
A side view of a Royal Air Force Brewster Bermuda I waiting on an airfield. (U.S. Air Force Photograph.)
U.S. Army soldiers from the 630th Tank Destroyer Battalion dig positions on a hill near Wiltz, Belgium during the Battle of the Bulge in December 1944. (Signal Corps Photograph.)