
The Conemaugh River and Blacklick Creek carve through the deep ridges of the Allegheny Front in this 1920 survey, defining a landscape of industrial river towns and upland farming communities. This era reveals a high density of rural infrastructure, from the Pennsylvania RR corridor to dozens of small district schools like Mahan School, Trindle School, and Snyders School. The map captures the specialized industrial geography of the region, including the Robindale Smokeless PO and the numerous named rows like Dixon Row and settlements like Black Lick. Between the river valley and the heights of Laurel Run, the terrain is marked by numerous reservoirs such as Big Spring Reservoir and Tubmill Reservoir, which supported the growing water needs of the neighboring steel and coal centers. Notable local landmarks like Fort Palmer Church and Ross Mountain Park sit alongside numerous quarries, showing the early 20th-century reliance on local mineral extraction.
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This is the sole edition of this map. No revisions or reprints were ever made.
1900 · Latrobe
USGS Topo · 1:62,500
1902 · Latrobe
USGS Topo · 1:62,500
1902 · Indiana
USGS Topo · 1:62,500
1902 · Barnesboro
USGS Topo · 1:62,500
1902 · Elders Ridge
USGS Topo · 1:62,500
1903 · Latrobe
USGS Topo · 1:62,500
1904 · Barnesboro
USGS Topo · 1:62,500
1904 · Elders Ridge
USGS Topo · 1:62,500
1904 · Johnstown
USGS Topo · 1:62,500
1907 · Johnstown
USGS Topo · 1:62,500