The Illinois River corridor anchors this modern topographic perspective, detailing the dense industrial and residential layout of Peru and La Salle. The confluence where the Little Vermilion River meets the larger waterway highlights the area's historical reliance on river geography for development. Moving south, the terrain transitions into the more open spaces of Oglesby and Jonesville, where the presence of Illinois Valley Community College and Forest Lawn Memory Gardens signifies the shift toward educational and institutional land use in the latter half of the 20th century.
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This is the sole edition of this map. No revisions or reprints were ever made.
1892 · Ottawa
USGS Topo · 1:62,500
1893 · Lasalle
USGS Topo · 1:62,500
1911 · La Salle
USGS Topo · 1:62,500
1913 · La Salle
USGS Topo · 1:62,500
1915 · Ottawa
USGS Topo · 1:62,500
1925 · Streator
USGS Topo · 1:62,500
1927 · Streator
USGS Topo · 1:62,500
1934 · Wenona
USGS Topo · 1:48,000
1939 · Wenona
USGS Topo · 1:62,500
1946 · Ottawa
USGS Topo · 1:62,500