Roy Lichtenstein's wry, comic book-y images may feel quintessentially New York. The Pop art pioneer, after all, grew up on Manhattan's Upper West Side, where he lived most of his life. But for more than 25 years, Lichtenstein had a love affair with Los Angeles. At least every other year starting in the late 1960s, and always strategically timed in the dead of winter, Lichtenstein migrated to L.A. to create new prints at Gemini G.E.L., the workshop that was at the epicenter of the nationwide printmaking revival happening at the time. The Skirball Cultural Center's "Pop for the People: Roy Lichtenstein in L.A.," which opens Oct. 7, explores the artist's relationship with L.A.