Cresap's War (also known as the Conojocular War, from the Conejohela Valley where it was mainly located along the south bank) was a border conflict between Pennsylvania and Maryland fought in the 1730s. Hostilities erupted in 1730 with a series of violent incidents prompted by disputes over property rights and law enforcement.

May 25, 2017 · Colonial Maryland and Pennsylvania had it harder than most: they both had legitimate (to them) claims to a large area of land. It was this competing interest that led to Cresap’s War, also known...

The Maryland and Pennsylvania Railroad (reporting mark MPA), colloquially known as the "Ma and Pa", was an American short-line railroad between York and Hanover, Pennsylvania, formerly operating passenger and freight trains on its original line between York and Baltimore, Maryland, from 1901 until the 1950s.

The Mason–Dixon line is a demarcation line separating four U.S. states: Pennsylvania, Maryland, Delaware and West Virginia. It was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon as part of the resolution of a border dispute involving Maryland, Pennsylvania, and Delaware in the colonial United States. [1]

In the southwest corner of the state, near Mount Morris, there is a monument that reads: "MASON-DIXON LINE. Made famous as line between free and slave states before War Between the States. The survey establishing Maryland-Pennsylvania boundary began in 1763; halted by Indian wars 1767; continued to southwest corner in 1782; marked 1784."

History, map and pictures of the abandoned Maryland & Pennsylvania Railroad between Baltimore, MD and York, PA.

While the resolution of this dispute was no doubt a great relief to all parties, Maryland lost 4,300 square miles, and Virginia 1,100 square miles, to Pennsylvania—the outcome of, in the words of Edwin Danson, the “most ambitious geodetic survey ever conducted.” (Charles W. Mitchell)

Originally surveyed by Englishmen Charles Mason (1728-86) and Jeremiah Dixon (1733-79), the line separates Pennsylvania from Maryland and West Virginia along the 39º43ˊ N. parallel and bounds Delaware along an arc that extends from Maryland to the Delaware River.

May 25, 2021 · The colonial governments of Pennsylvania and Maryland became embroiled in the dispute when settlers from each colony started crossing the Susquehanna River back and forth and creating settlements in what was perceived to be each other’s territory.

Aug 23, 2024 · The Maryland & Pennsylvania Railroad (reporting mark, MPA), affectionately remembered as the " Ma & Pa," was a bucolic short line based in western Maryland and southern Pennsylvania connecting northern Baltimore with the small town of York, Pennsylvania.