Solid Principles: Episode 30 - The Presidential Tapes: Between FDR and Nixon, the White House secretly recorded meetings, telephone conversations, and press conferences unbeknown to the participants involved. The bulk of these recordings are housed at the Presidential Recordings Program or on-line at whitehousetapes.net. On this edition, Solid Principles speaks with Professor David Coleman, Chair of the Presidential Recordings Program at the Miller Center of Public Affairs (University of Virginia) about the archive.