Have I missed one? We could count Kansas perhaps but their Sesquicentennial commission deals with the founding of the territory, bound up in Civil War history as that may be.
Update, 4/6/08. Jack Dempsey writes to answer my question as to if I missed any:
Ten percent! Anybody got more?
The answer is two, Michigan and North Carolina.
Michigan's is referenced here...
You'll note that the Governor assigned the responsibility to the Michigan Historical Comm'n rather than create a new one. I happen to have the honor of being a member of the MHC, so I'm thrilled to be involved...
Here's a link to North Carolina's.
As far as I'm aware, that's it.