[1] The Harold Byrd Mountains are in relatively flat country to the northeast of the lower reaches of the Leverett Glacier, and to the south of the Ross Ice Shelf.

Discovered in December 1929 by members of theByrd Antarctic Expedition Geological Sledging Party under Laurence Gould.

Discovered in December 1929 by theByrd Antarctic Expedition geological party under Laurence Gould, and named by R. Admiral Byrd for Malcolm P. Hanson, chief radio engineer of the expedition, and a pioneer in the development of radio communication apparatus for polar regions.

Graham, officer in charge of the winter-over detachment of United States Navy Squadron VX-6 at Little America V, 1956.

Named by US-ACAN for William L. Nichols, construction mechanic with the Byrd Station winter party in 1957.

Peak, 870 metres (2,850 ft) high, located 7 nautical miles (13 km; 8.1 mi) east of Harold Byrd Mountains between the southeast edge of the Ross Ice Shelf and Watson Escarpment.

The peak was visited by a USARP-Arizona State University geological party, 1977-78, and so named from its composition of nearly all white marble.

A ridge-like nunatak rising to 940 metres (3,080 ft) high, 3.5 nautical miles (6.5 km; 4.0 mi) south-southwest of Mount Manke, Harold Byrd Mountains.

It was visited in 1977-78 by a USARP-Arizona State University geological party, led by Edmund Stump, and named in the spirit of Coalsack Bluff (q.v.

); thin lenses of disintegrating mica and schist form a type of light soil on the slopes of thenunatak.

Named by US-ACAN for Lt. John B. Webster, United States Navy, flight surgeon with the McMurdo Station winter party in 1962.