Little America, base for Antarctic exploring expeditions, Antarctica, on the Ross Ice Shelf, S of the Bay of Whales. Richard E. Byrd, a U.S. explorer, established and named Little America in 1929 and built bases on the same site in 1933–35, 1939–41, and 1946–48 for subsequent expeditions. Little America IV at Kainan Bay, 30 mi (48 km) to the east, was a U.S. station during the International Geophysical Year (1957–58).
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