High-altitude spy planes :
Sweetman, Bill
High-altitude spy planes : the U-2s / by Bill Sweetman. - Mankato, Minn : Capstone Press, 2001. - 32 p. - War Planes .
Discusses the U-2 spy plane, its uses, engines, sensors, and future in the U.S. Air Force.
073680790X
U-2 (Reconnaissance aircraft)
High-altitude spy planes : the U-2s / by Bill Sweetman. - Mankato, Minn : Capstone Press, 2001. - 32 p. - War Planes .
Discusses the U-2 spy plane, its uses, engines, sensors, and future in the U.S. Air Force.
073680790X
U-2 (Reconnaissance aircraft)