This traveling show of Paterson Ewen’s works begins with several of his paintings from the early ’70s. At this time he made a sharp break from his formal abstract works of the ’50s and ’60s, seeking a new, less didactic form of expression. The earliest works are Thunderchain, 1971, an assemblage piece made of metal, wood, and linoleum, and Rocks Moving in the Current of a Stream, 1971, whose backdrop of metal and plywood marks a move away from working on canvas. The latter uses diagrammatic symbols—arrows and readable, abstract signs—to represent natural phenomena, a growing source of inspiration