Richard P. Feynman to H.-J. Jodl, April 10, 1987 / Nigel Calder to Richard P. Feynman, July 2, 1987 / Richard P. Feynman to Philip Daly, July 22, 1987 by Michelle Feynman & Nigel Calder narrated by Johanna Parker / Richard P. Feynman narrated by Richard Poe