Charles E. Mills was a painter, printmaker and muralist.
Mills was one of the 'Duveneck boys' in Venice. Frank Duveneck was an American painter, sculptor, etcher and art teacher, who began his teaching career in 1874 at the Ohio Mechanics Institute in Cincinnati. He was in Munich in 1878. His pupils were described as the 'Duveneck boys'. They included Otto Henry Bacher, Robert Frederick Blum, Theodore M. Wendel, George Edward Hopkins, John Alexander White, Julius Rolshoven, Charles Abel Corwin and Harper Pennington.
The 'Duveneck boys' met JW in Venice in 1879/80. The young painters were in awe of JW's experience and reputation. JW, who enjoyed their admiration, happily discussed his work and gave advice to the students. He used to come and sketch from the windows of the Casa Jankowitz on the Riva San Biagio in Castello where the group were staying.
MacDonald, Margaret F., Palaces in the Night Whistler in Venice, Aldershot, 2001.