This is from CNN Wolf Blitzer Reports transcript today, Wilson got to read the letter...
And as a consequence of the article I wrote, I received a letter from the first President Bush. Let me just read part of it to you, if I may.
BLITZER: This was a letter you received when?
WILSON: I received this on October 25th, 2002, at the very beginning of the serious debate on what U.S. policy toward Iraq should be, eight months after I made a trip to Niger, and eight months before my wife's identity was compromised.
He says, "Dear Joe: I read your fascinating article, and I agree with a lot of it. I am not sure Saddam Hussein will back down in the face of this latest challenge, but I certainly hope he will. Further, let me conclude by saying thank you very much for your letter. Further, I have great respect for you and for your service to our country. I hope you know that. Warm regards, George Bush."
http://transcripts.cnn.com/TRANSCRIPTS/0507/14/wbr.01.html