This painting awed me, I still think about it. Art Institute of Chicago - John Singer Sargent "Mrs. George Swinton (Elizabeth Ebsworth)" My essay: http://derekdenton.com/blog/2011/9/5/waiting-on-elizabeths-portrait.html
Vincent van Gogh. "Weeping Woman," 1883. Black and white chalk, with brush and stumping, brush and black and grey wash, and traces of graphite, over a brush and brown ink underdrawing on ivory wove paper. Art Institute of Chicago.