
Brokenstraw Creek carves a deep valley through this corner of Warren County, serving as the primary corridor for both the Pennsylvania railroad and early automotive travel in the mid-1920s. The settlement at Youngsville acts as a regional hub, where the creek meets Mathews Run and several rail lines converge. The surrounding uplands are characterized by a dense network of country schools, including Yankeebush Sch and Dalrymple Hill Sch, illustrating the dispersed rural population typical of the era.
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1904 · Chautaqua
USGS Topo · 1:62,500
1905 · Clymer
USGS Topo · 1:62,500
1905 · Jamestown
USGS Topo · 1:62,500
1906 · Warren
USGS Topo · 1:62,500
1907 · Warren
USGS Topo · 1:62,500
1908 · Warren
USGS Topo · 1:62,500
1927 · Tidioute
USGS Topo · 1:48,000
1927 · Titusville
USGS Topo · 1:62,500
1929 · Corry
USGS Topo · 1:48,000
1929 · Youngsville
USGS Topo · 1:62,500