One Hundred and Fifty years ago, President Abraham Lincoln signed the Act authorizing the protection of the “Yo-Semite valley” and “Mariposa Big Tree Grove.”
The Act was one of the first instances of land preservation for public use. Initially granted to the State of California, this area would later be incorporated into the future Yosemite National Park in 1890.
An Act authorizing a grant to the State of California of the “Yo-Semite valley,” and of the land embracing the “Mariposa Big Tree Grove,” June 30, 1864. Record Group 11: General Records of the United States Government, 1778 - 2006
Petition and map from John Muir and other founders of Sierra Club protesting a bill to reduce the size of Yosemite National Park. 01/02/1893. National Archives Identifier: 306674
(This map was included with a petition to Congress from the Sierra Club, protesting a bill to reduce the size of the park in 1893.)
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