“In one of the largest such purchases in American history, the University of Texas at Austin has bought the Watergate papers of Bob Woodward and Carl Bernstein for $5 million, the university announced today… As part of the extraordinary deal to purchase the materials, the university agreed to honor Woodward and Bernstein’s long-standing commitment to protect the identity of a number of confidential sources until their deaths, including ‘Deep Throat,’ the Nixon administration official whose deep-background information was crucial to The Post’s pursuit of the Watergate story.”