1924, The Trans-Polar Flight Expedition, tiny card franked by Newark NJ Mar 22 1924 cds with Norwegian stamps tied by Kings Bay 18.VI.25 cancel on back (Image)

Est. 50

1931 Wilkins-Ellsworth Trans-Arctic Submarine Expedition, U.S. and Norwegian stamps on cover with illus submarine cachet, VF (Image)

Est. 40

Grants, Maine, Dec 15 1933 cds on cover to Woodfords, ms '1st trip via Dog Team', letter enclosed from Postmaster at Oquossoc, Maine, documenting the first trip made on Dec 14 to Grants known as Route 1982...no special cancel available; Grants is a DPO 1914-1954 (Image)

Est. 25

1938, Phoenix, Arizona - Fabric Art/handpainted woman & flowers, woman's dress made of pieces of fabric on cover, addr to NJ (Image)

Est. 40

1946, Byrd Antarctic Expedition III, 'The Snow Cruiser Reaches the South Pole", cover lightly addressed to Boston, backstamped: "Registered No. 2040 / Carried from Little America by U.S.S. North Star" (Image)

Est. 30

2002, three similar covers from LaQueita Resort Club, Calif to Bangor, Maine, franked with various 1992 Columbian Expo issues, each paying the Priority Mail fee of $3.50, with PM label on back, (Image)

Est. 30

2008, Certified cover franked with $5 1053 (scuffed by mailing equipment), 10¢ 1044 & 11¢ 1044A pair, from Edgartown, Mass, to Bangor Maine, pretty Thorncroft Inn illus corner card, with mailing receipt & green return card (Image)

Est. 20