X-Planes from the X-1 to the X-60: An Illustrated History (Springer Praxis Books): Gorn, Michael H., De Chiara, Giuseppe: 9783030863975: Amazon.com: Books
Pfalz Scout Aces of World War 1 (Aircraft of the Aces): VanWyngarden, Greg, Dempsey, Harry: 9781841769981: Amazon.com: Books