Keystones aren’t the only stones indelible to Pennsylvania’s character. Limestone monuments marking each mile of the Mason-Dixon Line — a survey line dating back to the 1760s intended to resolve a ...

Could there be a more opportune moment for an authoritative book on the border crisis? No, not that border, and not today’s crisis, but the dispute that once raged over where Pennsylvania ended and ...

PHILADELPHIA — If Todd Babcock had his way, the Mason-Dixon Line would be known as the technological marvel that kept Philadelphia in Pennsylvania, not as flawed shorthand for the Civil War ...

But in the intervening three centuries, as the line came to represent a metaphoric boundary more than a physical one, the stones, which lacked any meaningful government protection, languished. Nicked ...

STATE LINE — The Middleburg/Mason-Dixon Line Historical Society will meet on Thursday, Feb. 20, at 7 p.m., according to a news release. The event will take place at the State Line Ruritan Building, ...