| Eadweard Muybridge On the trail to Pi-wy-ack. Vernal Falls. [Yosemite Valley, California.] 1868 Stereoview Bancroft Library, University of California Berkeley Zelda Mackay Collection of Stereographic Views, ca. 1860-ca. 1900, BANC PIC 1905.16034--STER LL/101983
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