On the right is John Muir, the famous naturalist and scientist (and co-founder and first president of the Sierra Club), standing at Glacier Point in Yosemite National Park with Teddy Roosevelt, on a camping trip the two made together in 1903. Muir had been exploring the area since 1868, later publishing his journal of these explorations and becoming a big proponent of preserving the wilderness in the area. On the trip with Roosevelt, Muir told him about how California was exploiting the park's resources (allowing logging, livestock, etc.), which led to Roosevelt's signing a bill in 1906 to take control of Yosemite Valley (along with the Mariposa grove of giant sequoia) out of the hands of the state and into the hands of the federal government.