Pop Art is a style of art, which explores the everyday imagery that is so much a part of contemporary consumer culture. Common sources of imagery include advertisements, consumer product packaging, celebrity photographs, and comic strips. The Pop Art movement originated in England in the 1950s and traveled overseas to the United States during the 1960s. Richard Hamilton and Eduardo Paolozzi, both members of the Independent Group, pioneered the movement in London in the 1950s. In the 1960s, the movement was carried by Peter Blake, Patrick Caulfield, David Hockney, Allen Jones, and Peter Phillips. In the early sixties, Pop art found its way to the United States, seen in the work of Jim Dine, Roy Lichtenstein, and Robert Rauschenberg. It developed in the United States as a response to the wealth of the post World War II era and the growing materialism and consumerism in society. The most recognized Pop Artist, Andy Warhol, used a photo-realistic, mass production printmaking technique called seriagraphy to produce his commentaries on media, fame, and advertising.
This website explains what pop art is and there is a huge list of pop artists. I think this web page is reliable because Artchive specializes in all movements of arts.
There is Chronological Listing of Pop Artists, which helps to find out what kind of works pop artists create. There is a small thumbnail of artworks by each pop artist.
This website features works by pop artists. So you can see all the works created by po artist linked to one page. Its is very easy to use.
This web site features extensive permanent collections of art and archives on one of the most influential American artists of the twentieth century. This website is very reliable as it is created by The Andy Warhol Museum associates.