This undated photo provided by The Art Institute of Chicago shows the painting “Oh, Jeff…I Love You, Too…But ” by the late pop artist Roy Lichtenstein. The artwork will be part of the exhibit Roy Lichtenstein: A Retrospective, which runs through Sept. 3, 2012 before traveling to Washington, London and Paris. (AP Photo/Courtesy the Estate of Roy Lichtenstein via The Art Institute of Chicago)