FDC, 6.5 x 3.5, with a cachet honoring aviation pioneer Octave Chanute, signed in ballpoint or felt tip by seven crew members of the Enola Gay, three adding their position: R. H. Nelson, Tom Ferebee, Dutch Van Kirk, Paul Tibbets, George R. Caron, Jacob Beser, and Morris R. Jeppson. In fine condition, with a few traces of postal ink to reverse. R&R COA.