The J. Paul Getty Museum
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The J. Paul Getty Museum: image dedicated to the public domain under Creative Commons Zero (CC0), stated on the media record itself ('Rights for Media'), with download clearance.
Carleton Watkins. Piwyac, or the Vernal Fall, 300 feet, from the cliff, Yosemite Valley, Mariposa County, Cal., about 1867. The J. Paul Getty Museum.