American art museums flourished in the late twentieth century, and the impresario leading much of this growth was J. Carter Brown, director of the National Gallery of Art in Washington, DC, from 1969 to 1992. Along with S. Dillon Ripley, who served as Smithsonian secretary for much of this time, Brown reinvented the museum experience in ways that had important consequences for the cultural life of Washington and its visitors as well as for American...