Richard Nixon Presidential Library to open access to about 154 hours of recordings . Tapes include conversations about Watergate , Roe v. Wade , Watergate . President Nixon announces the U.S. incursion into Cambodia during the Vietnam War in April 1970 . the U.S. Supreme Court 's also includes 30,000 pages of formerly classified documents .
Richard Nixon Presidential Library to open access to about 154 hours of recordings . Tapes include conversations about Watergate , Roe v. Wade , Watergate . the U.S. Supreme Court 's also includes 30,000 pages of formerly classified documents .