Andy Warhol is a figurehead of American pop-art. According to his own definiton he called his works "reproductions of everyday things", which owe their effect to either enlargement, alienation effect of isolation or alignement of the motif.
http://www.warhol.org/
Since 2002 Rosenthal studio-line and the Rosenthal limited art edition have been celebrating his come-back with a marvellous own Warhol edition. In 1980 Warhol had made a portrait of Philip Rosenthal, next to other celebrities, - in 2003 this was reproduced as »Portrait Philip Rosenthal« within the edition "Hommage | Philip Rosenthal" in the limited art editions (49 pieces).