Seymour Hersh; Thomas Starzl; 'The Book of Love'

Investigative reporter Seymour Hersh reveals new facts about the assassination of George Wallace and the secret Nixon tapes. Surgeon Thomas Starzl comments on the experimental transplantation of a baboon's liver to a human being. Letters from "The Book of Love," which Cathy Davidson compiled by reading over 3,000 love letters from famous writers, are recited in the studio. Cathy Davison shares "The Book of Love," a compilation of love letters from famous writers; actors Dyna Corsetti and Joe Morton read some of those letters aloud.