Andy Warhol’s most famous series is a collection of 32 paintings, each one of a Campbell’s Soup can, and each one is of a different flavor. Warhol unveiled the images at Los Angeles’ Fergus Gallery on July 9, 1962, in an exhibition that is often cited as the introduction of pop art to the west coast. If there's a Warhol work to know, whether or not you care about its story, it's this one.