Lac à Calahan
Lake in Avoyelles County, Louisiana · on the USGS Holum quadrangle
31.96850, -92.05013
Maps that show Lac à Calahan
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Holum, LA
USGS topo, 2024

Olla, LA
USGS historical 15-minute topo (1955)

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

U.S. Fish and Wildlife Service Alligator Snapping Turtle Range (2024)
Fish & Wildlife Service Refuge Maps (public domain)

Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)

IFR Enroute Low Altitude Chart L-18 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-22 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-06 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).