John Singer Sargent, Mary Crowninshield Endicott Chamberlain (Mrs. Joseph Chamberlain), 1902, Oil on
John Singer Sargent, Mary Crowninshield Endicott Chamberlain (Mrs. Joseph Chamberlain), 1902, Oil on canvas, 150,5 x 83,8 cm, National Gallery of Art, Washington -- source link
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