After James G. Ray landed an autogiro plane on the South Lawn of the White House in Washington, April 22, 1931, President Herbert Hoover presented the Collier Trophy to Harold Pitcairn of Philadelphia as the outstanding American aviation feat of 1930. From left to right: with the aircraft in the background and the trophy in front, are Pitcairn, shaking hands with the president, and Sen. Hiram Bingham of Connecticut, president of the National Aeronautics Association. (AP Photo)