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[http://www.nga.gov/content/ngaweb/research/casva/research-projects.html A Project of the National Gallery of Art, Center for Advanced Study in the Visual Arts ]
G.K. Richardson after W.H. Bartlett, View from Hyde Park (Hudson River), 1840, Hand-colored steel engraving, from American Scenery; or, Land, lake, and river illustrations of transatlantic nature (London: 1840), vol. 1, no. 23