Pennsylvania Keystone Markers … Symbols of our Past and Bright Future
Duportail House 297 Adams Drive, Chesterbrook, PennsylvaniaThe Keystone Marker Trust was founded in 2010 to protect the historic keystone-shaped town marker signs of Pennsylvania. These signs, typically painted blue and yellow, are found throughout the Commonwealth and were installed starting in the mid-1920s by the Pennsylvania Department of Highways, the predecessor to PennDOT. Though many towns have adopted and cared for …