Felt, Mark (17 August 1913–18 December 2008), FBI official and the source (“Deep Throat”) who helped Washington Post reporters expose the Watergate scandal, was born William Mark Felt in Twin Falls, Idaho, to Mark Earl Felt, a carpenter and building contractor, and Rose Dygert Felt. At the University of Idaho, Felt was president of his fraternity, Beta Theta Phi, whose mission was “developing men of principle for a principled life.” After graduating in 1935, Felt became a correspondence clerk for the Idaho senator James P. Pope in Washington, D.C. Three years later Felt married Audrey Robinson from Gooding, Idaho. The couple had two children. Felt graduated George Washington Law School in 1940 and worked at the Federal Trade Commission before joining the Federal Bureau of Investigation (FBI) on 16 January 1942....