Dedicated to conserving America’s precious natural resources, Horace Albright 1912 (left) helped create the National Park Service in 1916 and served as its second director. Many policies he initiated, such as historic preservation, are still practiced today, and he was personally involved in creating the Zion and Grand Teton National Parks. Often considered the father of the modern environmental movement, David Brower (right) was the first executive director of the Sierra Club and fought to protect the redwoods, stop the building of dams in national parks, and gain passage of the Wilderness Act of 1964, among other crusades. He later founded Friends of the Earth and Earth Islands Institute.

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