1½ pages, 4to (10 7/8 by 8½ in.), on one side each of two sheets of typewriter bond paper, tiny punctures in upper right corners from stapling faint penciled note by Leo Szilard at top: "Original, not sent!"" /> EINSTEIN, Albert. Typed letter signed ("A. Einstein") TO PRESIDENT FRANKLIN DELANO ROOSEVELT, Peconic, Long Island, 2 August 1939, <I>1½ pages, 4to (10 7/8 by 8½ in.), on one side each of two sheets of typewriter bond paper, tiny punctures in upper right corners from stapling</I> faint penciled note by Leo Szilard at top: "Original, not sent!" | Christie's