Big Lake
Lake in Brown County, Illinois · on the USGS Cooperstown quadrangle
39.96460, -90.52479
Maps that show Big Lake
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Cooperstown, IL
USGS topo, 2024
Meredosia, IL
USGS historical 15-minute topo (1928)
Meredosia, IL
USGS historical 15-minute topo (1931)
Network to Freedom Brochure Map - National Underground Railroad Network to Freedom Program
National Park Service Maps (public domain) · National Underground Railroad Network to Freedom Program
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-27 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).