cover 1927, Wilkins North Pole Expedition Flight Cover (AAMC #1052), U.S. 2c Carmine (634) tied by purple Expedition cachet and Barrow, Alaska purple pmk. on air mail cover with Roessler cachet, ms. notation "12,000 miles over Artic by plane, Lat 77.45, N. Long 175, 100 miles on foot to shore", Fairbanks backstamp, with Wilkins pencil autograph signature, very fine, AAMC $400.00 photo