A visual artist and writer closely associated with the New York School of the 1960s and ’70s, Joe Brainard invented variations on commercial images and artifacts that have become icons of Pop art. This exhibition presents 20 mixed-media works from Brainard’s provocative If Nancy Was series, a recent gift of the Alex Katz Foundation. Taking the popular comic-book character Nancy as his muse, Brainard cast this loveable and enigmatic little girl in a variety of surprising roles, among them Nancy as a face on Mount Rushmore, as an old Kleenex, as a de Kooning “Woman” painting, and as a building in New York City.