Excellent work.
I would add this anti-war column written by one Joseph Wilson in The Nation:
Issue date of The Nation is March 3, but note, web posted on February 13, 2003.
This dovetails with your post-SOTU/pre-NY Times no mention of any concern regarding the representations made by President Bush in his speech in reference to uranium and Africa.
Also, I'm sure you see that Wilson writing in The Nation means it is no surprise that it is David Corn that starts the drumbeat about the "outing" of Plame.
Other FReepers have said they think there is a wider story here, and they may well be right. But at least insofar as the thread that winds through to eruption of the current "leak" controversy, it looks like Wilson, Pincus, Corn, and probably Wilson's wife are the key players.