Figure 2  Map of the Philadelphia region showing quarries, churchyards, and towns. Quarries: (a) Henderson, (b) Brooks/Reeseville, (c) Wilkinson/Fritz/Potts, (d) Traquair/Cedar Grove, (e) Marble Hall, (f) Lentz. Churchyards: (1) Saint Peter’s, (2) Great Valley Presbyterian, (3) Great Valley Baptist, (4) Trappe Lutheran, (5) Gloria Dei. Towns: (C) Conshohocken, (M) Malvern, (N) Norristown, (W) Whitemarsh.