Alto Pass and the surrounding high ground of the Shawnee National Forest define this section of southern Illinois. The landscape is marked by prominent elevations such as Bald Knob and Milligan Hill, which separate the various watersheds that feed into Cedar Lake and the Alto Pass Reservoir. The area is historically rooted in small settlements like Mountain Glen and Kaolin, the latter of which shares its name with the local Kaolin Trl, reflecting the region's mineral interests. Genealogy researchers can find numerous burial grounds scattered across the terrain, including Stearns Cem, Collins Cem, and Tabor Cem. The map reveals a complex network of trails and rural routes, such as the Ranbarger Hollow Trl and Godwin Trl, which navigate the steep ridges and hollows that characterize this portion of Union and Jackson Counties.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Jonesboro
USGS Topo · 1:62,500
1920 · Dongola
USGS Topo · 1:62,500
1922 · Carbondale
USGS Topo · 1:62,500
1923 · Dongola
USGS Topo · 1:62,500
1923 · Jonesboro
USGS Topo · 1:62,500
1924 · Alto Pass
USGS Topo · 1:62,500
1941 · Carbondale
USGS Topo · 1:62,500
1947 · Jonesboro
USGS Topo · 1:62,500
1947 · Alto Pass
USGS Topo · 1:62,500
1947 · Gorham
USGS Topo · 1:24,000