American newspapers--Ownership 1 Compromise of 1850 1 Grotjan's Philadelphia Public Sales Reports 1 Mexican War, 1846-1848 1 Philadelphia (Pa.)--Hickory Club 1 Reading (Pa.)--Riots 1798 1 Scott, Dred 1 more ... Slavery 1 United States--Latin American relations 1 Wilmot proviso 1 Yellow fever--Pennsylvania--Philadelphia 1 less ...