Two glossy photos of William 'Pete' Knight wearing flight suits and posing in front of high-powered aircraft, including the X-15 Flight 188, signed in blue ballpoint and black felt tip, "Wm. J. Knight, Maj., Pete, USAF." Typed notations to reverse of both photos date the signatures to 1966. In overall very good to fine condition, with staple holes to the upper right corner of the vertical photo.
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