Biographer Robert Caro on taking decades to capture LBJ

Robert Caro is one of the nation’s preeminent biographers, known for meticulous research and taking his time with a subject. Indeed, he began his massive series "The Years of Lyndon Johnson" in 1977, but its final volume won't be published for at least another year. Meanwhile, Caro has written a memoir about how he does what he does, titled simply, "Working." Jeffrey Brown sits down with Caro.