Excerpt from Proceedings of the Engineers' Club of Philadelphia, 1909, Vol. 26 Hering, C., Discussion on Recent Improvements in Incandescent Testing of Sheet St
Excerpt from Proceedings of the Engineers' Club of Philadelphia, 1892, Vol. 9 From New York to Beaufort and Moorhead City, N. C., the route is already open to v
Excerpt from Proceedings of the Engineers' Club of Philadelphia, 1880, Vol. 1 The Future of American Engineering, Classification of Masonry Cleemann, Thos. 31.