Engineer (1890–1974) known for his pivotal role in the development of the atomic bomb as a primary organizer of the Manhattan Project. Vintage print of a Eugene Montgomery portrait of Bush working in his laboratory, 11 x 13.5, signed in and inscribed in the lower border in fountain pen, “To Ralph & Terry Booth, with cordial regards, Vannevar Bush.” Print is affixed to an identical size board. In fine condition, with scattered light soiling to borders, as well as some slight rippling. RRAuction COA.