nytimes September 2, 2021 5:01pm The Roots of Joan Mitchell’s Greatness #art #mitchelljoan192592 #sanfranciscomuseumofmodernart #baltimoremuseumofart #joanmitchellexhibit #parisfrance #contenttypepersonalprofile #artanddesign #news The Roots of Joan Mitchell’s Greatness A retrospective at the San Francisco Museum of Modern Art tracks how the painter’s signature style extended the contours of Abstract Expressionism.