After spending three nights camping alone with John Muir, President Roosevelt helped push for including the Yosemite Valley and Mariposa Grove of giant sequoias as part of Yosemite National Park. Previously, it had been under the care of the state of California.
Source:
Yosemite National Park
Episode:
Episode Two: 1890-1915
Associated Park:
Yosemite National Park
Era:
1900-1920
Associated People:
John Muir, Theodore Roosevelt