Joan Mitchell was a ‘Second Generation’ Abstract Expressionist painter. Along with Lee Krasner, Grace Hartigan, and Helen Frankenthaler she was one of the few female painters of her era to gain critical and public acclaim. Her paintings can be seen in major museums and collections across America and Europe. Mitchell was born in 1925 in Chicago, Illinois. In 1942 she enrolled at Smith College, later transferring to The Art Institute of Chicago in 1944. Wikipedia
The definitive Wikipedia entry for Joan Mitchell. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Joan_Mitchell