Big Island
Island in Angelina County, Texas · on the USGS Etoile North quadrangle
31.38519, -94.48659
Maps that show Big Island
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Etoile North, TX
USGS topo, 2022

Broaddus, TX
USGS historical 15-minute topo (1958)

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-19 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-06 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-21 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).