Greater Pittsburgh Chamber of Commerce

• Lake Erie and Ohio River ship canal
• Lake Erie and Ohio River Ship Canal: Report of the Provisional Committee of the Chamber of ..
• A year's record of great achievements
• Lake Erie and Ohio River Ship Canal
• Mercantile, manufacturing and mining interests of Pittsburgh, 1884
• Notas interesantes acerca de Pittsburg
• Pittsburgh
• Pittsburgh and the lake cities
• Pittsburgh and western Pennsylvania