On June 30, 2014, Yosemite turned 150 years old. On June 30, 1864, during the Civil War, President Abraham Lincoln signed the Yosemite Grant Act establishing Yosemite Valley and Mariposa Grove as the first protected parcels of wild land in the world. The grant didn’t just save the areas from development, it also created the first California State Park, and laid the foundation for the National Parks system. Later, John Muir led a successful movement to establish Yosemite National Park, which included not just Yosemite Valley and Mariposa Grove, but the land surrounding and between the two areas as well.
To find more information about Yosemite, including guidebooks, histories and pictures, look under the Subject Heading Yosemite National Park in the Marin County Free Library catalog.