Strollers along Manhattan's Madison Avenue last week did a double take at the Contemporaries Gallery windows. There seemed to be blank papers, framed and on show. A closer look from a sharp angle revealed that the papers were actually prints, but made without ink. They were geometrical constellations of straight, raised and interlocking lines, embossed on the paper. On close inspection the lines proved to border geometrical shapes in space, which seemed to keep shifting. These were puzzle pictures by Abstractionist Josef Albers.
An early luminary of Walter Gropius' Bauhaus in Germany, which developed...