Commerce 65 History 12 Philadelphia (Pa.)--Commerce 7 Business enterprises 6 Description and travel 6 Economic conditions 6 Harbors 6 more ... Railroads 4 West Indies--Commerce 4 Commerce--Philadelphia--19th century 3 Directories 3 Harbor 3 Philadelphia (Pa.)--Commerce--History--19th century 3 Shipping--Pennsylvania--Philadelphia 3 Advertising--20th century 2 Advertising--Brand name products--United States 2 Advertising--Pennsylvania--Philadelphia--20th Century 2 Advertising--United States--History--20th century 2 African Americans 2 Coal trade 2 Finance 2 Industry 2 International trade--18th century 2 International trade--19th century 2 Manufacturing industries 2 Matchbook labels 2 Matchbook labels--Collectors and collecting 2 Matchbook labels--Pennsylvania--Philadelphia--20th century 2 Matchbook labels--United States--Collectors and collecting 2 Matchcovers 2 Matchcovers--Collectors and collecting 2 Matchcovers--Pennsylvania--Philadelphia--20th century 2 Matchcovers--United States--Collectors and collecting 2 Merchants--Pennsylvania--Philadelphia--19th century 2 Pennsylvania--History 2 Pennsylvania--History--Colonial period, ca. 1600-1775 2 Philadelphia (Pa.) 2 Philadelphia (Pa.)--Commerce--History--18th century 2 Philadelphia (Pa.)–-Merchants-–18th century 2 Philadelphia (Pa.)–-Merchants-–19th century 2 less ...