Before Willie Mays joined the New York Giants for their pennant drive in 1951, he played for the Minneapolis Millers of the American Association. This poster advertises a game between the Millers and the Columbus Red Birds on May 1, 1951 -- Mays would be called up to the Giants just weeks later. This cardboard piece interestingly utilizes the centennial logo of 1939. 14x22”, VG.