Old State Line
The northern boundary of Pennsylvania, before the purchase of the Erie Triangle in 1792, crossed the highway at this point. The State paid $151, 640.25 for the Erie tract and its port on the Lakes.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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