David R. Brower
David Ross Brower (/ˈbraʊər/; July 1, 1912 – November 5, 2000) was a prominent environmentalist and the founder of many environmental organizations, including the John Muir Institute for Environmental Studies, Friends of the Earth (1969), the League of Conservation Voters, Earth Island Institute (1982), North Cascades Conservation Council, and Fate of the Earth Conferences. From 1952 to 1969, he served as the first Executive Director of the Sierra Club, and served on its board three times: from 1941–1953; 1983–1988; and 1995-2000. As a younger man, he was a prominent mountaineer.