Carleton E. Watkins, ‘Mt. Hood and the Dalles, Columbia River’, 1867, National Gallery of Art, Washington, D.C.
sheet (trimmed to image): 40 x 52.4 cm (15 3/4 x 20 5/8 in.)  support: 55 x 68.4 cm (21 5/8 x 26 15/16 in.)

About Carleton E. Watkins