“No matter what I do,” the late Ed Clark told The New York Times in 2014, “there’s not a day that I’m not an artist.” Perhaps that’s what Clark was thinking in the 1950s, when he contemplated a push broom and decided to use it as a huge paint brush. “The motions of the strokes give the work life,” Clark explained. He also began working on shaped canvases—ovals, circles—the first American artist to do so. Moving between New York City and Paris, Clark’s work blends America’s Abstract Expressionism with European Modernism. In this survey, his formative paintings from the 1960s through the 80s are on display. —E.C.