From Citizendium, the Citizens' Compendium
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- Miller, Randall M. and William A. Pencak, eds. Pennsylvania: A History of the Commonwealth (2002), detailed scholarly history
- Beers, Paul B. Pennsylvania Politics Today and Yesterday (1980), government textbook
- Klein, Philip S and Ari Hoogenboom. A History of Pennsylvania (1973).
- Weigley, Russell. Philadelphia: A 300-Year History (1982)
- WPA Federal Writers' Project. Pennsylvania: A Guide to the Keystone State, 1940.