Merchants--Pennsylvania--Philadelphia--18th century 2 Slaves and Slave Trade--Jamaica--18th and 19th Centuries 2 Slaves and Slave Trade--Philadelphia--18th century 2 Slaves and slave trade--Pennsylvania--18th century 2 Commerce--18th century 1 Estate administration--18th century 1 Family life--Upper class--Philadelphia--18th and 19th Centuries 1 more ... International trade--18th century 1 Powel Genealogy 1 Real Estate--Philadelphia--18th-19th Centuries 1 Shipping--Pennsylvania--Philadelphia--18th century 1 Sugar Plantations--Jamaica--18th and 19th Centuries 1 Trade - 18th Century 1 less ...