"Between 1830 and 1880, oil sketches by American landscape painters gradually emerged from the privacy of the studio as desirable and marketable works of art in their own right. Landscape painting was of prime importance in America during the mid-nineteenth century, and artists such as Thomas Cole, Frederic Edwin Church, Albert Bierstadt, and Sanford Robinson Gifford traveled to distant, often inaccessible places in search of new images. The hazards accompanying such ventures added to the public's interest in the on-the-spot sketches, which also became marketing tools for the carefully composed paintings that would later be created in a studio setting."

"The painted sketch : American impressions from nature, 1830-1880 : [Dallas Museum of Art, 21 June-20 September 1998] : [The Corcoran Gallery of Art, Washington D.C., 11 October 1998-10 January 1999] : [Sterling and Francine Clark Art Institute, Williamstown, Massachusetts, 6 February-9 May 1999]"
"The painted sketch American impression from nature, 1830 - 1880 : [Dallas Museum of Art, 21 june - 20 sept. 1998]"
"The painted sketch : American impressions from nature, 1830-1880"@en
"The painted sketch : American impressions from nature, 1830-1880"
"The painted sketch American impressions from nature, 1830-1880"@en
"The painted sketch : American impressions from nature 1830-1880"
"The painted sketch : American impressions from nature, 1830 - 1880"