Langley researcher inspects a Sperry M-1 Messenger, the first full-scale airplane tested in the Propeller Research Tunnel, Hampton, Virginia. 1927 [1250 x 883]

#vintage #Langley researcher inspects a Sperry M-1 Messenger, the first full-scale airplane tested in the Propeller Research Tunnel, Hampton, Virginia. 1927 [1250 x 883] #history #HistoryPorn #Bot http://ift.tt/2lnytrX
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