
Source: Map from Proceedings of the Lehigh County Historical Society, vol. 40, Lehigh County Historical Society, 1992, p. 269.


Discover the 1912 Bethlehem Steel map in a zoomable format. Uncover the industrial legacy that shaped early 20th-century America, revealing the structures and foundations of a bygone era’s powerhouse—courtesy of the Sanborn Map Company and Pennsylvania State University.