User:Gene Nygaard/sandbox/156

Collier's Encyclopedia, 1986
Macmillan Publishing Company, New York; P.F. Collier, Inc., London and New York

vol. 19 p. 201 POLAR REGIONS|Explorations, Arnold L. Gordon

Sir Ernest Shackleton's expedition of 1908 performed two notable feats, climbing Mount Erebus (12,280 feet; 3,743 meters) and reaching a point within 100 miles (160 kilometers) of the Pole.

vol 20 p. 628 SHACKLETON, SIR ERNEST HENRY (1874-1922), Alfred Lansing (author of Endurance: Shackleton's Incredible Voyage)

With three companions, he came within 97 nautical miles (180 km) of the Pole before a food shortage forced him to abandon the attempt.

The World Book Encyclopedia
1992 vol. 17 p. 339, John Edwards Caswell

Shackleton, Sir Ernest Henry (1874-1922), an Irish explorer, led a British expedition that came within 97 miles (156 kilometers) of the true South Pole in 1908 (see Antarctica [Early exploration])

1994 vol. 17 p. 341, William Barr

Shackleton, Sir Ernest Henry (1874-1922), an Irish explorer, led a British expedition from the Ross Sea that came within 97 nautical miles (180 kilometers) of the south geographic pole in 1908 (see Antarctica [Early exploration])

1992 vol 1 p. 536 (same two sentences, same page number, same contributor 1994, 1996, 2000)

Antarctica| Exploration |Early exploration, Ian W. D. Dalziel

Food shortages forced the men to turn back early. But they had arrived within 97 miles (156 kilometers) of the pole, close enough to prove that the pole was on land rather than beneath a frozen sea.

1992 Caswell, John Edwards, B.A., M.A., Ph.D. Author, Arctic Frontiers: United States Explorations in the Far North

1994 1:XV Barr, William, M.S. Prof., Department of Geography, Univ. of Saskatchewan.

1994 1:XXI Dalziel, Ian W. D., Ph.D., Prof. of Geological Sciences, Univ. of Texas at Austin.