United States: Postal History 1935, Byrd Antarctic Expedition II to Little America, set of fiv...

United States: Postal History
1935, Byrd Antarctic Expedition II to Little America,
set of five oversized covers, each franked with block of four 3c Byrd Antarctic Expedition II and 8c Air Mail, tied by "Little America / Antarctica / JAN 30 1935" datestamp, each with Byrd Antarctic Expedition II /Little America, Antarctica / Second Cancellation Mail cachets, each carried on one of exploration flights one through five, with corresponding marking denoting latitude and longitude, each also signed "R.E. Byrd" in black ink, handstamped dates of November 15, 16, 19, 22, and 23, and each with San Francisco 25 March transit backstamps, a lovely and scarce group, very fine and rarely offered; from Little America, Antarctica, Rear Admiral Byrd led five exploration flights to locate a channel beween the Ross Ice Barrier and Weddell Sea, with 100 covers recorded carried on each flight.
Cover