Cotton Hill
Summit in Sangamon County, Illinois · on the USGS New City quadrangle
39.67949, -89.57342
Maps that show Cotton Hill
Get them in the map app
New City, IL
USGS topo, 2024

Divernon, IL
USGS historical 15-minute topo (1922)

Divernon, IL
USGS historical 15-minute topo (1924)

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
Name, class, county and location: USGS Geographic Names Information System (public domain).