This site from the John Singer Sargent Virtual Gallery is a great sight with thumbnails of John Sargent's artworks including the "Madame Gautreau" and "Madame X" portraits. Provides links to websites with more information on the pictures...

This site from the John Singer Sargent Virtual Gallery displays Sargent's painting, "Daughters Sargent's Edward Darley Boit." Informative site on the painting with good, in-depth information.

The Smithsonian presents a collection of sixty pieces of art from the Gilded Age period in America. Works are included by such artists as Sargent, Thayer, Bannister, Beaux, and others.