Iron industry and trade--Pennsylvania 10 Forges and Furnaces--Pennsylvania--19th century 2 Iron industry and trade--United States--History 2 Autographs--19th century 1 Business--History--Pennsylvania--Philadelphia--20th century 1 Chandler, Theophilus Parsons Jr, 1845-1928 1 Economic Recessions--18th century 1 more ... Family life--Philadelphia--18th-19th Century 1 Gasholders 1 Genealogy 1 Geology--South Mountain District, Pa.--Surveys 1 Historic buildings--Pennsylvania--Philadelphia 1 Homes and Haunts--Pennsylvania 1 Independence Hall (Philadelphia, Pa.) 1 Industry, Trade, and Tariffs--19th century 1 International trade--19th century 1 Iron Manufacturing--19th century 1 Iron Manufacturing--Mid-19th Century 1 Iron industry and trade--Cumberland County, Pa 1 Iron industry and trade--India 1 Iron ores--Pennsylvania--Cumberland Co 1 Isabella Furnace (Chester County, Pa.) 1 Merchants--Pennslyvania--Philadelphia--20th century 1 Merchants--Pennsylvania--Philadelphia--History 1 Paschal Iron Works 1 Pennsylvania--Politics and Government 1 Photographs on glass 1 Railroads 1 Regulations and Inspection--Shipping--Philadelphia--19th century 1 Scrapbooks 1 Shipping--Pennsylvania--Philadelphia--19th Century 1 Sweden--Genealogy 1 Sweden--History--1814-1905 1 Sweden--History--20th century 1 Sweden--Social life and customs 1 Tata Iron and Steel Company 1 Trade--Pennsylvania--19th century 1 United States--Foreign Relations--18th century 1 Warwick Furnace 1 Water heaters, Gas 1 less ...