American portrait and genre painter, 1824-1906 American painter and printmaker. Between 1840 and 1842 he was apprenticed to the Boston lithographer John H. Bufford (1810-70). His mastery of this medium is apparent in his few lithographs, of which the best known is Marguerite (c. 1865-70; Worcester, MA, Amer. Antiqua. Soc.). In 1845 he moved to Washington, DC, where he drew portraits in chalk, crayon and charcoal of prominent Americans, including Daniel Webster, John Quincy Adams and Dolly Madison (all 1846; Cambridge, MA, Fogg). In 1846 he settled in Boston and brought his early portrait style to its fullest development. His chiaroscuro charcoal drawings, of exceptional sensitivity, were remarkably sophisticated for an essentially self-trained artist. In 1848 he travelled to Europe to study painting at the D?sseldorf Akademie. During his two-year stay he was closely associated with Emanuel Leutze, and painted his first genre subjects