The Nixon tapes constitute by far the largest collection of presidential recordings--and the most famous. Between February 1971 and July 1973, Nixon secretly recorded over 3,700 hours of his meetings and conversations.
This comprehensive website details all aspects of the Watergate scandal, giving a historical overview, important documents and speeches and a comprehensive chronology of events.
This UC Berkeley resource provides the audio format of the most important Watergate tapes and a brief description of their content.
The Nixon Library contains millions of documents, photographs, videos and tapes, many of which are available in digital format through the virtual library.