Federation of American Scientists
Fas: Intelligence Resource Program: U 2 Spy Plane
Complete history and information page from the development of the U-2 to the present day. Includes great illustrations and helpful tables.
Other
Aerostories: Gary Powers' Misadventure
An excellent resource for learning about the U-2 spy plane flown by Francis Gary Powers that was shot down over Russia in 1960. Contains a very detailed examination of the origins of spy plane missions plus fabulous details that bring...