Hi, You might want to check out these web sites. http://sdss4.physics.lsa.umich.edu:8080/~mckay/amckay/presintr.htm The Presbyterian Archives and Historical Society http://www.philadelphiabuildings.org/pab/app/in_display.cfm/480887 I hope this helps. I'd like to know where the Bullskin records are located also. Ann