| William Henry Jackson Natural Bridge, Shoshone Falls, Idaho 1883 (ca) Albumen silver print 10 1/8 x 6 3/16 ins (25.7 x 15.7 cm) (image) 10 5/8 x 6 3/4 ins (27 x 17.1 cm) (sheet) Philadelphia Museum of Art Gift of Theodore T. Newbold, 1983, Accession Number: 1983-203-3 LL/71844
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