1. Barbara Liggett, Archaeology at New Market, Excavation Report (Philadelphia: N.p., 1981), pp. 74–76. 2. “The Bill of Thomas Wharton May 10, 1771,” Pennsylvania Magazine 33 (1909): 253. For a reprint of this bill, see Graham Hood, “Bonnin and Morris of Philadelphia: The First American Porcelain Factory, 1770–1772,” p. 58, Appendix 7, in this volume.