Robert L. M. Underhill

Robert Lindley Murray Underhill
Robert L. M. Underhill in the Sierra Nevada in 1931.
Born	(1889-03-03)March 3, 1889, Ossining, New York (then named Sing Sing)
Died	May 11, 1983(1983-05-11) (aged 94)
Known for	Mountaineering

Robert Lindley Murray Underhill (March 3, 1889 – May 11, 1983) was an American mountaineer best known for introducing modern Alpine style rope and belaying techniques to the U.S. climbing community in the late 1920s and early 1930s.