
Pine Grove Mills and its surrounding agricultural valleys are the focal point of this late 20th-century survey of the Centre Co and Huntingdon Co borderlands. The landscape is defined by the massive ridge of Tussey Mountain, which separates the northern valley settlements of Fairbrook and Rockspring from the southern woodland reaches of the Rothrock State Forest. This transition from farmed valley floor to high timbered ridges reflects the region's industrial heritage, anchored by historic sites like Monroe Furnace and Neffs Mills.
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This is the sole edition of this map. No revisions or reprints were ever made.
1908 · Bellefonte
USGS Topo · 1:62,500
1909 · Bellefonte
USGS Topo · 1:62,500
1919 · Menno
USGS Topo · 1:62,500
1922 · Philipsburg
USGS Topo · 1:62,500
1923 · Tyrone
USGS Topo · 1:62,500
1929 · Tyrone
USGS Topo · 1:48,000
1933 · Tyrone
USGS Topo · 1:62,500
1935 · Allensville
USGS Topo · 1:62,500
1938 · Allensville
USGS Topo · 1:62,500
1939 · Philipsburg
USGS Topo · 1:62,500