1929, first flight cover "FIRST DIRECT FLIGHT CANTON YUNNANFU" with commemorative 4c. and 15c. air mail (left margin copy) tied by "CANTON 25.11.29." to cacheted cover, "YUNNANFU 2.12.1929" to reverse. The airplane started Nov. 26 but crashed at Wuchow, forwarded from "CANTON 26.11.29" by surface, scarce suspended flight, vertical crease (Image)