Thompsons Island (historical)
Island in St. Lawrence County, New York · on the USGS Murphy Islands quadrangle
44.88000, -75.18556
Maps that show Thompsons Island (historical)
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Murphy Islands, NY-ON
Detailed map of terrain, trails and roads
USGS topo, 2023
Waddington, NY
Old map for history, not navigation
USGS historical 15-minute topo (1905)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-32 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-11 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-12 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).