. . "The Pittsburgh directory, for 1819. : Containing the names, professions, and residence of all the heads of families, and persons in business, in the city of Pittsburgh, and its suburbs. : And a variety of other useful information"@en . . "Directories"@en . . . . . . . . "The Pittsburgh directory for 1819"@en . . . "The Pittsburgh directory, for 1819. Containing the names, professions, and residence of all the heads of families, and persons in business, in the city of Pittsburgh, and its suburbs. : And a variety of other useful information"@en . "City directories"@en . . . "Registers (Lists)"@en . . . . . "Pittsburgh (Pa.)" . .