The Line of Property is the name commonly given to the line dividing Indian from British Colonial lands established in the Treaty of Fort Stanwix of 1768. In western Pennsylvania it is referred to as the Purchase line.
As written with original spellings and place names; (modern names in parentheses):
The starting point is the confluence of the Tennessee River with the Ohio River at Paducah, Kentucky. The line follows the south bank of the Ohio almost the entire length of Kentucky and all of West Virginia to Pittsburgh where the Allegheny River joins the Monongahela River to form the Ohio. It then follows the Allegheny River north.
For the line from Kittanning, Pennsylvania to the "nearest fork" of the west branch of the Susquehanna River at Cherry Tree, Pennsylvania, see the article on the Purchase line.
From Cherry Tree the line followed the West Branch on its sinuous course due north and then northeast to Clearfield, Pennsylvania and then meandered through the deep gorges of the Alleghenies past Renovo, Pennsylvania, exiting the mountains into Bald Eagle Valley at Lock Haven, Pennsylvania, and then east-northeast to the confluence with Pine Creek at Jersey Shore, Pennsylvania.
The next section of the line is difficult to fix, since the "Burnetts Hills" of the treaty never been positively identified. Also, the distance to follow Pine Creek, let alone which of the forks of that Creek to follow, is not specified.
The only part of this section that can be definitely established is the lowest (easternmost) portion of Towanda Creek from Monroeton, Pennsylvania to Towanda, Pennsylvania.