Andy Warhol, Heinz Tomato Ketchup Box [Prototype], 1963-64.

Andy Warhol (American, 1928-1987)
Heinz Tomato Ketchup Box, 1964
silkscreen ink and house paint on plywood

Read more at warhol.org: http://www.warhol.org/ArtCollections.aspx?id=1642#ixzz2Mp1FOmjI

Pop art is about liking things. Andy Warhol print graphics on boxes to pretend the real Heinz tomato ketchup which is one of the most popular products in America.