Click on access for public users, and then on "Constitutions" at the top of the next screen. A comprehensive collection of early constitutional documents in facsimile, including numerous failed revisions and amendments.
From the American Library Association, links to publications for specific states similar to the United States Government Manual with directory information and/or descriptions of departments and agencies.
NCSC charts of the routes of appeal and jurisdictional bases of courts in each state. This is the place to learn that the New York Supreme Court is a trial court, or that Oklahoma and Texas each have two courts of last resort.