Beaver Swamp (historical)
Swamp in Putnam County, Ohio · on the USGS Hamler quadrangle
41.15422, -84.05411
Maps that show Beaver Swamp (historical)
Get them in the map app
Hamler, OH
Detailed map of terrain, trails and roads
USGS topo, 2023

Ottawa, OH
Old map for history, not navigation
USGS historical 15-minute topo (1908)

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

IFR Enroute Low Altitude Chart L-28 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-27 (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-10 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-12 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).