[1] During his post, DeLoach was the third most senior official in the FBI after J. Edgar Hoover and Clyde Tolson.

[2] In his book, “The Secrets of the FBI” national security journalist Ronald Kessler reported an incident in which a highly placed congressional staffer believed that DeLoach attempted blackmail using derogatory information from the agency's files.

:[3] Roy L. Elson, administrative assistant to U.S. Sen. Carl T. Hayden, experienced [FBI blackmail] first-hand.

Elson had reservations about the request, but Cartha D. “Deke” DeLoach, one of the FBI’s top officials, met with him and “hinted” that he had “information that was unflattering and detrimental to my marital situation and that the senator might be disturbed,” Elson told me for my book.

There was no doubt in my mind what he was talking about.” Elson suggested that they both tell Hayden, who headed the Senate Appropriations Committee, about his affair.