International trade--18th century 42 International trade--19th century 30 Merchants--Pennsylvania--Philadelphia--18th century 26 Shipping--Pennsylvania--Philadelphia--18th century 15 Iron industry and trade--Pennsylvania 10 Shipping--Pennsylvania--Philadelphia--19th Century 8 Trade--West Indies--18th century 8 more ... Lumber trade--Pennsylvania--19th century 7 Trade--China--19th Century 7 Trade--England--18th Century 7 Building Trades--19th century 6 Grocery trade--19th century 6 Stock market and trading--Philadelphia--19th century 6 Trade--foreign and domestic--19th century 6 Fur trade--Philadelphia--18th century 5 Furniture industry and trade--Philadelphia--19th century 5 Tobacco-Sales and Trade--19th century 5 Trade--Transatlantic--18th century 5 Accounts--19th century 4 China--Commerce 4 Commerce--Philadelphia--18th century 4 Commerce--Philadelphia--19th century 4 French and Indian War 4 International Trade--18th century 4 Tea--Sales and Trade 4 Trade and professional associations--Philadelphia (Pa.)--19th century 4 Trade--Transatlantic--19th century 4 United States--History--Revolution, 1775-1783--Economic aspects 4 Accounts--18th century 3 Commerce--18th century 3 Commerce--West Indies--18th century 3 Industry, Trade, and Tariffs--19th century 3 International Slave Trade--19th century 3 Merchants--Dry Goods--Philadelphia--18th century 3 Merchants--Pennsylvania--Philadelphia--19th century 3 Philadelphia (Pa.)--Commerce--History--19th century 3 Societies, etc 3 Trade - 18th Century 3 Trade--Pennsylvania--19th century 3 United States--History--War of 1812--Commerce and Trade 3 less ...