"Absolute Proof"

Guest: Robert Groden, author of new book "Absolute Proof"

Robert J. Groden (born November 22, 1945) is an American author who has written extensively about conspiracy tehories regarding the assassination of U.S. President John F. Kennedy. His books include The Killing of a President: The Complete Photographic Record of the JFK Assassination, the Conspiracy, and the Cover-up; The Search for Lee Harvey Oswald: A Comprehensive Photographic Record; and JFK: The Case for Conspiracy (shorter version than his 1975 co-authored book).Groden is a photo-optics technician who served as a photographic consultant for the House Select Committee on Assassinations.