James Abbott Mcneill Whistler American Tonalist Painter and Printmaker, 1834-1903, He was an American-born, British-based artist. Averse to sentimentality and moral allusion in painting, he was a leading proponent of the credo "art for art's sake". His famous signature for his paintings was in the shape of a stylized butterfly possessing a long stinger for a tail. Arrangement in Gray Portrait of the Painter Arrangement in Gray: Portrait of the Painter
(self portrait, c. 1872), Detroit Institute of Arts