Sixty years ago, a new band got together in Venice, California, and set the music world ablaze. The Doors, an improv group comprised of poet Jim Morrison, Ray Manzarek on keyboards, Robby Krieger on guitar and John Densmore on drums, are being celebrated with a new book, “Night Divide the Day: The Doors Anthology.” Correspondent Anthony Mason talks to Densmore and Krieger (the last surviving members of the group) and takes a tour of where it all began for The Doors.