It's hard to believe it now, but there was a time and a place where billboards were true works of art and a mirror to our culture. The time was the 1970s -- the place, the Sunset Strip. That's where icons of rock 'n' roll were displayed larger than life. Back then a young photographer began snapping pictures of those billboards. Those shots are now collected in a book. It's called "Rock 'n' Roll Billboards of the Sunset Strip." Madeleine talks to the photographer, Robert Landau.