Robert Caro, who was working on the fifth and final volume of his biography series on President Lyndon Johnson, offered a tour of his New York City office and home library. NOTE: a lengthier version of this interview is available for watching here: https://www.c-span.org/event/book-tv/pulitzer-prize-winning-author-robert-caro-on-his-lbj-robert-moses-biographies/443311