Niagara Falls

1855–1865

Medium: ambrotype
Dimensions: image (visible): 13.3 × 18.4 cm (5 1/4 × 7 1/4 in.) mat: 16.5 × 21.5 cm (6 1/2 × 8 7/16 in.) case (closed): 18 × 23 × 2 cm (7 1/16 × 9 1/16 × 13/16 in.)
Genre: Photograph
Museum: National Gallery of Art, Washington, DC, US