Smith, G. (1976). History of Delaware County, Pennsylvania: From the discovery of the territory included within its limits to the present time, with a notice of the geology of the country, and catalogues of its minerals, plants, quadrupeds, and birds. Media, Pa.: Delaware County Institute of Science.

Smith, George. History of Delaware County, Pennsylvania: From the Discovery of the Territory Included Within Its Limits to the Present Time, With a Notice of the Geology of the Country, and Catalogues of Its Minerals, Plants, Quadrupeds, and Birds. Media, Pa.: Delaware County Institute of Science, 1976.

Smith, George. History of Delaware County, Pennsylvania: From the Discovery of the Territory Included Within Its Limits to the Present Time, With a Notice of the Geology of the Country, and Catalogues of Its Minerals, Plants, Quadrupeds, and Birds. Media, Pa.: Delaware County Institute of Science, 1976.