On your web site you asked for info about the Zagat Survey (note that it's Zagat). I don't know if this is the reference that you're looking for but I found this site that rates Tito's.

On a more personal subject, I have been going to Tito's since I was in Little League in 1959 or 1960. It would be great to learn some of the history of Tito's, the owners, when they moved from the Sepulveda corner location, any employees been there since the beginning etc. Has there been a story or article that covers all this kind of stuff? I live up in Monterey County now but I still have friends and family that are regulars and I visit whenever I'm down your way.