Walter Sickert (1860-1942) was a leading figure in the development of British painting and the graphic arts. Influenced by Whistler and Degas early in his career, by 1914 he was respected as a major figure within the Camden Town Group and a renowned painter in his own right. Yet Sickert's life and art were never stable, and he was never complacent. His work varies strikingly--from a strongly worked paint surface laden with impasto to the thinnest...