Grantville and the southern edge of Fort Indiantown Gap define the lower reaches of this 2019 survey, where the suburban development of East Hanover Township meets the sharp ridgelines of the Blue Mountains. The landscape is dominated by the northeast-southwest trending ridges that shelter Stony Creek and Clarks Valley Road, creating a corridor for the Appalachian National Scenic Trail and the expansive DeHart Reservoir. Historical traces of previous transport and industry remain visible, such as the Old RR Bed running parallel to Stony Creek and the notable Devils Race Course boulder field.
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This is the sole edition of this map. No revisions or reprints were ever made.
1892 · Lykens
USGS Topo · 1:62,500
1892 · Hummelstown
USGS Topo · 1:62,500
1892 · Harrisburg
USGS Topo · 1:62,500
1893 · Lykens
USGS Topo · 1:62,500
1893 · Millersburg
USGS Topo · 1:62,500
1899 · Harrisburg
USGS Topo · 1:62,500
1924 · Hummelstown
USGS Topo · 1:62,500
1924 · Harrisburg
USGS Topo · 1:62,500
1943 · Millersburg
USGS Topo · 1:62,500
1943 · Lykens
USGS Topo · 1:62,500