B-17 Flying Fortress Takes Flight Over Sevierville | Local Entertainment | greenevillesun.com
B-17 Flying Fortress, Vol. 2: Boeing's B-17E through B-17H in World War II (Legends of Warfare: Aviation): Doyle, David: 9780764361296: Amazon.com: Books
World War II Boeing B-17 Flying Fortress will take the skies over Des Moines
Belly Turret of a Boeing B27 Bomber. Editorial Photography - Image of equipment, ball: 159877437
The Mystery of Pittsburgh's “Ghost Bomber” - Heinz History Center