Celebrated as one of the most influential artists of his day, Roy Lichtenstein became one of the pioneers of the Pop Art movement in the 1960s, alongside Andy Warhol, Jasper Johns, and James Rosenquist. Trained as an abstract painter, Lichtenstein was a relatively unknown artist until his mid-30s when he created his first comic-strip painting. Intending to make his paintings look like oversized mass media publications, he decided to translate the Ben-Day dots produced by commercial presses onto the canvas, rendering them by hand, using paint and stencils. Sourcing material from comics, advertisements and the everyday, Lichtenstein brought what was during the reign of Abstract Expressionism a great taboo, commercial art, into the gallery. In the year 1962, Roy Lichtenstein presented his paintings to Leo Castelli, who immediately agreed to exhibit them at his gallery in New York City. From 1962-1987, he had over 16 solo shows at the famous Leo Castelli Gallery.