
The Base Line serves as a critical surveying divide on this map, separating the townships of Marion and Jefferson counties. Walnut Hill sits at the northern edge, where the Southern railroad cuts across the prairie landscape towards Creeds Hill. The land use here is a mix of agricultural expanses like Grand Prairie and industrial zones, most notably the Boyd Oil Field located near the small settlement of Boyd.
33 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1914 · Centralia
USGS Topo · 1:62,500
1933 · Mount Vernon
USGS Topo · 1:48,000
1934 · Salem
USGS Topo · 1:62,500
1935 · Centralia
USGS Topo · 1:62,500
1938 · Salem
USGS Topo · 1:62,500
1940 · Mount Vernon
USGS Topo · 1:62,500
1943 · Ashley
USGS Topo · 1:62,500
1946 · Ashley
USGS Topo · 1:62,500
1958 · Belleville
USGS Topo · 1:250,000
1962 · Belleville
USGS Topo · 1:250,000