After experiments with collage, conceptual art and "earth art" — he once painted the surface of a frozen lake — Novak, in the '60s, developed his current medium which he calls froissage. These delicate watercolor fantasies are made by crumpling paper, straightening it out and washing the surface with diluted ink to bring out the random linear patternings formed by the creases. Among these lines the artist hunts down hidden images, fixes them in with pale delicious watercolor.