Fort Indiantown Gap and its extensive military infrastructure anchor this portion of Lebanon County, where the valley floor meets the ridges of the Blue Mountain. The landscape is defined by a significant military and commemorative presence, from the operational runways of Muir Army Airfield to the sprawling grounds of the Indiantown Gap National Cemetery. Water plays a central role in the geography here, with Swatara Creek winding through the south and several reservoirs like Marquette Lake and Memorial Lake providing focal points within the military reservation.
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1891 · Lebanon
USGS Topo · 1:62,500
1892 · Lykens
USGS Topo · 1:62,500
1892 · Hummelstown
USGS Topo · 1:62,500
1892 · Pine Grove
USGS Topo · 1:62,500
1893 · Lykens
USGS Topo · 1:62,500
1893 · Lebanon
USGS Topo · 1:62,500
1899 · Lebanon
USGS Topo · 1:62,500
1924 · Hummelstown
USGS Topo · 1:62,500
1943 · Lebanon
USGS Topo · 1:62,500
1943 · Lykens
USGS Topo · 1:62,500