An exact answer is elusive, but a consensus is now available. MasterpieceCards, LLC, announces collections of art history cards that depict famous paintings cited most often by art historians throughout the world: “250 Masterpieces of Western Painting” highlights famous masterpiece paintings from nearly 100 museums and institutions around the world, while “125 Masterpieces in the Eastern U.S.” targets exemplary paintings along the Eastern seaboard.