History 58 Manufactures 56 Glass manufacture 43 Gas manufacture and works 26 Cotton manufacture 24 Sugar 19 Manufacturing industries 18 more ... Manufacture and refining 17 Manufacturers 17 Glassware 15 Commerce 11 Cotton growing 11 Industries 11 Woolen and worsted manufacture 10 Cotton growing and manufacture 9 Equipment and supplies 9 Streets 9 Description and travel 8 Tariff 8 Textile industry 8 Agriculture 7 Protectionism 7 Manufacture 6 Manufacturing 6 Societies, etc 6 Strikes 6 Travel 6 Catalogs 5 Economic conditions 5 Iron industry and trade 5 Labor and laboring classes 5 Manufacturer's catalogs 5 Manufacturing--Philadelphia--20th century 5 Ordnance 5 Porcelain 5 African Americans 4 Chemical industry 4 Electrical apparatus industry 4 Employment 4 Fabrication 4 less ...