Sylvester K. Stevens
Contributor
Executive Director, Pennsylvania Historical and Museum Commission, Harrisburg, 1956β72. Author of Pennsylvania: Birthplace of a Nation.
Primary Contributions (1)
Philadelphia, city and port, coextensive with Philadelphia county, southeastern Pennsylvania, U.S. It is situated at the confluence of the Delaware and Schuylkill rivers. Area 135 square miles (350 square km). Pop. (2010) 1,526,006; Philadelphia Metro Division, 4,008,994;β¦
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