Kummer, Insa. "Caspar Wistar." In Immigrant Entrepreneurship: German-American Business Biographies, 1720 to the Present, vol. 1, edited by Marianne S. Wokeck. German Historical Institute. Last modified September 25, 2014.
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[1] "On Dec. 7, 1738, a German immigrant named Caspar Wistar recruited four craftsmen from his homeland to help him launch his empire of glass in to the sandy forests of Salem County ."