The Nixon presidential materials, especially the transcripts of President Nixon's recorded, Oval Office conversations makes for great reading this morning.

As early as 1973, Nixon and John Dean believed W. Mark Felt was leaking information to Time Magazine and others. But Nixon was afraid Felt knew too much, and declined to take any action. Although they were hopeful others would, eventually:

PRESIDENT: In other words, you can't blow the whistle on Felt, just like you can't blow the whistle on that son of a bitch out there, the yeoman, in the Jack Anderson case, right?

DEAN: That's right, but there will become, ah, there will come a day when (Acting FBI Director L. Patrick) Gray's comfortably in there, when other things come past, ah --

PRESIDENT: Like what?

DEAN: I think that Gray called at some point when, if this sort of things continues, once he gets through his confirmation, I don't know why he couldn't himself say, "I'm gonna take a lie detector test and I'm gonna ask everybody in my immediate shop to take one and we're gonna go out and ask some of the other agents to take them...

PRESIDENT: Just for the leakage.

DEAN: "...as for leakage, because this, this only hurts, ah, this whole institution."

Every time a new revelation occurs, it shines a new light on the events of Watergate and the Nixon administration. The "Deep Throat" revelation will bring an especially bright light onto the whole episode.