Muhlenberg’s Headquarters on PA Historic List
The Pennsylvania Historical and Museum Commission (PHMC) has been collecting information concerning archaeological sites and historic resources for the greater part of a century. In February, 2020, there are well over 26,000 archaeological sites and over 139,000 historic properties in these files. One of those is the Moore Irwin property in Upper Merion, CRGIS file #079789. On July 17, 1979,