Videos Featuring Dr. Richard Kunin Dr Richard Kunin, Linus Pauling, Ph.D., and Gladys Block, Ph.D. Email 14 December 2017 TwitterShare on TumblrVideo length: 50:41 Dr. Richard Kunin, Linus Pauling, Ph.D., and Gladys Block, Ph.D. discuss vitamin therapy and medicine at Stanford in 1993.