21959 at the NASM collection was built in Dayton, Ohio, by the Dayton-Wright Airplane Company. It was completed and flown on October 29, 1917. This was the prototype American-built DH-4. This airplane was used in more than 2,600 experiments, including engine, propeller, and control tests, until its retirement in April 1919. On may 13, 1918, Orville Wright made his last flight as a pilot flying a 1911 Wright Model B alongside this DH-4, flown by Howard Max Rinehart. He then made a flight as a passenger in the DH-4 with Rinehart. The museum's DH-4 carries the complete military equipment used on American DH-4s in World War I: six 11 kg (25 lb) Mark II bombs, two DeRam DR-4 cameras, a wireless transmitter, and two Holt wing-tip flare holders. Defensive armament consists of two fixed, forward-firing .30-caliber Marlin machine guns, and the observer's position is armed with two flexible .30-caliber Lewis machine guns on a Scarff ring mount. The War Department transferred the NASM DH-4 to the Smithsonian Institution in 1919. The National Air and Space Museum restored the aircraft in 1980-1981.
N489 at the USAF Museum, Dayton, Ohio is a composite of two aircraft
652 at The Aviation Heritage Center, Omaka, Blenheim , New Zealand
N3258 at the Evergreen Museum, McMinnville, Oregon (loaned from Museum of Flight, Seattle)
One example at the National Museum of the US Marine Corps, Quantico, Virginia (part original)
One example at the Fantasy of Flight, FL (see photo)
One example at the San Diego Air and Space Museum
One example at the Peter Jackson Collection, New Zealand