1929 (29 Sep) United States 5c Beacon, used on cover, endorsed "this cover was carried to Seattle, Wash. on Russian Airplane "Land of the Soviets", through the courtesy of Commander Shestakoff", signed Chass A. Sheldon, Postmaster, Seward, Alaska, addressed to Seattle, with Oct.14 arrival pmk on back, fine. Only 10 covers were carried on the "Land of the Soviets" from Seward (Cat No. AAMC 1095b) (Image)

Est.US$500

1931 (5 Oct) 1931, 5c stationery entire envelope flown from Seattle to Divernon, Ill., with "Pangborn & Herndon First Trans-Pacific Hop. 7 AM. Wenatchee" handstamp, fine (Image)

Est.US$150

1932 Mattern & Griffin Round the World Flight, cover franked with U.S., German and Russian adhesives, bearing appropriate postmarks and autographed by both fliers, light adhesive toning, otherwise v.f., with 1987 PFC. The U.S. pilot Jimmy Mattern, with Lt. Griffin attempted to beat the "round-the-world" record, held at the time by Post and Gatty. After flying from New York via Harbour Grace, they landed in Berlin and later reached Moscow. Their plane crashed up on the way to Siberia. Only a handful of covers carried on this flight (Cat No. AAMC TO1167) (Image)

Est.US$750

1937 (14 July) World Record Non-stop Transatlantic flight, Moscow-San Jacinto, by Soviet aviators Gromov, Danilin and Yumashev on their long-distance record flight via the North Pole. The airplane was a single-engine ANT-25-1 which flew 6262 miles in 62 hours and 17 minutes, fine cover with photo cachet and San Jacinto pmks (Image)

Est.US$250