U.S. President Theodore Roosevelt (left) and nature preservationist John Muir, founder of the Sierra Club, stand together on Glacier Point in Yosemite National Park. In the background can be seen Upper and Lower Yosemite Falls. During this trip in 1903, Muir convinced Roosevelt to add Yosemite Valley and Mariposa Grove to the park, which had been established in 1890.Photo credit: Underwood and Underwood
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