Uploaded December 2009 | Updated September 2026, 23 minutes ago

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When Joseph Walker passed through in 1833, there were none, but today, thousands of maps portray Yosemite National Park. From a land grant created during the Civil War, to modern computer mapping, these maps also tell the story of the protection of Yosemite. For an audio described version of this video, go to youtu.be/HIjTYi1HjIs.