Mark FeltWilliam Mark Felt Sr. (August 17, 1913 – December 18, 2008) was a Federal Bureau of Investigation (FBI) special agent and Associate Director, the Bureau's second-highest-ranking post, from May 1942 until his retirement from the FBI in June 1973. During his time as Associate Director, Felt served as an anonymous informant, nicknamed "Deep Throat", to reporters Bob Woodward and Carl Bernstein of ''The Washington Post''. He provided them with critical information about the Watergate scandal, which ultimately led to the resignation of President Richard Nixon in 1974.
Though Felt's identity as Deep Throat was strongly suspected by some in Washington, D.C., including Nixon himself, it generally remained a secret for 30 years. In 2005, Felt finally acknowledged that he was Deep Throat, after being persuaded by his daughter to reveal his identity.
Felt worked in several FBI field offices prior to his promotion to the Bureau's headquarters. In 1980, he was convicted of having violated the civil rights of people thought to be associated with members of the Weather Underground, by ordering FBI agents to break into their homes and search the premises as part of an attempt to prevent bombings. He was ordered to pay a fine, but was pardoned by President Ronald Reagan during his appeal.
Felt published two memoirs: ''The FBI Pyramid'' in 1979 (updated in 2006), and ''A G-Man's Life'', written with John O'Connor, in 2006. In 2012, the FBI released Felt's personnel file, covering the period from 1941 to 1978. It also released files pertaining to an extortion threat made against Felt in 1956. Provided by Wikipedia