Roy Lichtenstein (October 27, 1923 September 29, 1997) was a prominent American pop artist, his work heavily influenced by both popular advertising and the comic book style. He himself described Pop art as, "not 'American' painting but actually industrial painting".
Curator's Tour of Lichtenstein's Exhibition at Tate Modern
The mission of this Web site "is to become the definitive and most effective guide to museum-quality fine art on the Internet." And it is an excellent resource! Only provides references to sites on the Web where artists' works can be viewed online.