American flags. Targets. Collage. As banal as some of Jasper Johns’s subject matter and motifs may seem, his technique was muscular and his work was freighted with hidden socio-political meaning. Or not so hidden, as in the toothbrush mounted with human teeth and titled The Critic Smiles. Decades after he helped bridge Abstract Expressionism as one of the artists ushering in a new era known as Pop Art, Johns’s work—especially his printmaking—continues to engage. This exhibition, a selection of 90 pieces drawn from the Walker Art Center’s collection, surveys six decades of the artist’s printmaking oeuvre. A few paintings and sculptures are also included.