In my 1993 biography of Woodward and Bernstein, "Deep Truth," I argued that Deep Throat had to be a composite portrayal. No more.

Yesterday's unveiling of Woodstein's notes at the University of Texas is an appropriate time to let Poynter's readers know -- based on recent events and my own research at the National Archives in College Park, Maryland -- who I believe DT is and why.

He's not one of the nearly 100 suspects who've already been named -- either by the University of Illinois investigative team or dozens of other Watergate scholars and experts.

Certainly nearly everyone who reads Poynter was mystified when George W. Bush -- a President who arguably hates the press -- gave Bob Woodward seven hours of interviews which became the core of two best-selling and largely laudatory books. He also urged his cabinet to cooperate with Woodward and many did.

The explanation: George Herbert Walker Bush, the president's father, is Deep Throat.

Historians will immediately point out that Bush, the elder, wasn't in Washington between 1971 and 1973 but lived at the Waldorf-Astoria in New York where he was ambassador to the United Nations.