Other
Gerald R. Ford Presidential Library and Museum: The Watergate Files
Detailed story of the political crimes collectively known as Watergate, as told by the Ford Library. Includes coverage of the trials, the Senate hearings, the tapes, and the people involved.
Digital History
Digital History: Watergate
This site is a comprehensive overview of the Watergate break-in and investigation that would eventually result in Nixon's resignation.
Independence Hall Association
U.s. History: Undoing a President
A good description of the Watergate affair, what led up to it, who was involved, and why it was such a big deal.