Air Force Association Wright Brothers 46th Anniversary Air Mail Envelope, carried by Colonel Thomas G. Lanphier, Jr. on the record-setting AFA Around the World Flight, December 2-7, 1949, made using commercial airlines as a round trip from Washington, D.C., in 4 days, 23 hours, 47 minutes. The envelope was first sent from the president of the AFA in Washington, D.C., to the president of the Kill Devil Hills Memorial Association, Kitty Hawk, North Carolina. Following the world flight, the envelope was presented at a luncheon in Kitty Hawk on December 17, 1949, to the Curator, National Air Museum, and flown the same day back to Washington, D.C., for delivery to the Smithsonian Institution. The envelope carries international air mail stamps cancelled at each of its 21 stops, including a first day cancellation of four US Air Mail 6-cent Wright Brothers commemorative stamps. A group of 6 US Air Mail stamps affixed at top has been oversigned by James H. "Jimmy" Doolittle attesting to Lanphier’s round trip departure and arrival times from New York, NY.