Close had been known for his skillful brushwork as a graduate student at Yale University. There, he emulated Willem de Kooning and seemed "destined to become a third-generation abstract expressionist, although with a dash of Pop iconoclasm". After a period in which he experimented with figurative constructions, Close began a series of paintings derived from black-and-white photographs of a female nude, which he copied onto canvas and painted in color. As he explained in a 2009 interview with Cleveland, Ohio's "The Plain Dealer" newspaper, he made a choice in 1967 to make art hard for himself and force a personal artistic breakthrough by abandoning the paintbrush. "I threw away my tools", Close said. "I chose to do things I had no facility with. The choice not to do something is in a funny way more positive than the choice to do something. If you impose a limit to not do something you've done before, it will push you to where you've never gone before." One photo of Philip Glass was included in his resulting black-and-white series in 1969, redone with watercolors in 1977, again redone with stamp pad and fingerprints in 1978, and also done as gray handmade paper in 1982.