Bidspirit auction | Blackbird SR71 crew signed 1974

Blackbird SR71 crew signed 1974 Farnborough Internation Air Show cover flown in a Lockheed 'Blackbird' SR-71 on a World Record breaking flight from RAF Mildenhall to Beale AFB on California and signed by the crew, Captain Harold 'buck' Adams and Major William 'bill' Machorek.