John Singer Sargent

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John Singer Sargent (January 12, 1856 – April 14, 1925) was an American painter, and a "leading portrait painter of his generation." During his career, he created roughly 900 oil paintings and more than 2,000 watercolors, as well as countless sketches and charcoal drawings. His oeuvre documents worldwide travel, from Venice to the Tyrol, Corfu, the Middle East, Montana, Maine, and Florida.

Reference
http://en.wikipedia.org/wiki/John_Singer_Sargent