Websites exist which have posted historic USGS topographic maps that can be found by town name as well as by quadrant.
The Pennsylvania State Archives also keeps historic survey records and warrant registers. These records can be extremely helpful, and can be found at the Land Records page of the State Archives.
Portion of the Southwest section of the
Barnesboro Quadrangle in PA.
Surveyed in 1902 and printed in 1904.