Mammoth plate photographs of San Francisco, Yosemite Valley and Mariposa Grove, taken by Carleton Watkins and printed between 1859 and 1881. Contains images of the Pacific Mail Steamship Company, a San Francisco panorama, El Capitan, Cathedral Rock, Yosemite Fall, Nevada Fall, and other features of the Yosemite area. Includes a portrait of Galen Clark standing in front of the Grizzly Giant in Mariposa Grove.