Dunmore and Critcherson, ‘The Arctic Regions: No. 36. The Glacier As Seen Flowing Or Being Forced Down Between The Hills, Ploughing Up A Moraine Of Earth And Rocks, Twenty To Thirty Feet High’, 1869, National Gallery of Art, Washington, D.C.
image: 11 5/16 x 15 1/2 in. (28.7 x 39.4 cm)  support: 47.9 x 61.8 cm (18 7/8 x 24 5/16 in.)

Image rights: Courtesy National Gallery of Art, Washington

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