Boeing B-50 Superfortress - Wikipedia,This week in history – April 9, 1957: First flight of KB-50J, jet-augmented tanker > Kirtland Air Force Base > Article Display,Boeing WB-50D Superfortress > National Museum of the United States Air Force™ > Display,Warplanes of the USA: Boeing B-50 Superfortress,Boeing WB-50D Superfortress > National Museum of the United States Air Force™ > Display