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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 ]
Asher Brown Durand, "The Chestnut Oak on the Hosack Estate, Hyde Park, New York with Five Figures and an Artist Sketching," 1838, graphite on paper, 10 1/2 x 14 in. (26.7 x 35.6 cm), irregular, New-York Historical Society, Gift of Miss Nora Durand Woodman, 1918.98
Inscribed at lower center in graphite: "Chestnut oak on Dr Hossacks place- / Hyde park July 12th. 1838"