International trade--19th century International trade--18th century 2 Merchants--Pennsylvania--Philadelphia--18th century 2 Merchants--Pennsylvania--Philadelphia--19th century 2 Business records--Pennsylania--Philadelphia--19th century 1 Merchants--Rhode Island--Newport 1 Newport (R.I.)--Merchants--18th century 1 more ... Philadelphia (Pa.)–-Merchants-–18th century 1 Philadelphia (Pa.)–-Merchants-–19th century 1 Slavery--West Indies--18th century 1 Trade--China--18th century 1 less ...