A vigorous spirit of enterprise : merchants and economic development in Revolutionary Philadelphia / Thomas M. Doerflinger. Doerflinger, Thomas M. Institute of Early American History and Culture (Williamsburg, Va.) Businesspeople Pennsylvania Philadelphia History 18th century. HC108.P5 D64 1986 380.10974811 DOV Includes index. Bibliography: p. [383]-398. Chapel Hill : Published for the Institute of Early American History and Culture, Williamsburg, Va. by the University of North Carolina Press, c1986. c1986. 1986 Text xvi, 413 p. : eng Philadelphia (Pa.) Commerce History 18th century. Philadelphia (Pa.) Economic conditions. Pennsylvania Philadelphia