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In what year was the Academy of Natural Sciences of Drexel University (formerly the Academy of Natural Sciences of Philadelphia) founded?
19th century, 20th century, Academy of Natural Sciences, Environment and Nature, Pennsylvania, Philadelphia, Science and MedicineComments: 2
Who helped construct the Cambria Iron Works in Johnstown, Pennsylvania, and worked for Bethlehem Steel?
Wealthy merchant and landowner William Bingham helped establish what landmark institution in Philadelphia in 1781?