It is clear that Deep Throat was a composite of characters. Steven Ambrose said that the original first draft of All the President's Men exists in a vault at Simon & Schuster and this draft does not have a Deep Throat character. Deep Throat was added at the Publisher's urging.
(Please read: http://www.freerepublic.com/focus/f-news/1418514/posts.)
I think also that when we're on the subject of what is fact and what is fiction and relative to a true scandal, let's compare Watergate and Nixon's actions during wartime, with Ted Kennedy at Chappaquidick. Every FR should read this.
http://www.ytedk.com/chappindex.htm
nick
Yeah, that is true, but it is my understanding that David Obst never knew the ID of Deep Throat. And I have read that in the beginning the book was a much different type of book, one that didn't tell Felt's story.