History of the Yosemite area people for the creation of a unified Yosemite National Park. The Sierra Club began to organize annual trips to Yosemite in 1901 in an effort to make the remote area more accessible. U.S. President Theodore Roosevelt camped with John Muir near Glacier Point for three days in May 1903. During that trip, Muir convinced Roosevelt to take control of the valley and the grove away from California and give it to the federal government. On June 11, 1906, Roosevelt signed a bill that did precisely that, and the superintendent's headquarters was moved from Wawona to Yosemite Valley. To secure congressional
Yosemite National Park U.S. Congress authorized the O'Shaughnessy Dam through passage of the Raker Act. In the late 1920s a bid for Yosemite for the 1932 Winter Olympics was put forward. Ultimately, the 1932 Winter Olympics were awarded to Lake Placid, New York. In 1937, conservationist Rosalie Edge, head of the Emergency Conservation Committee (ECC), successfully lobbied Congress to purchase about 8,000 acres of old-growth sugar pines on the perimeter of Yosemite National Park that were to be logged. More recently, preservationists persuaded Congress to designate , or about 89% of the park, as the Yosemite Wilderness—a highly protected wilderness area. The Park