Harper Mountain
Summit in Wheeler County, Oregon · on the USGS Spray quadrangle
44.82911, -119.86876
Maps that show Harper Mountain
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Spray, OR — USGS 7.5-minute topo (2023)
USGS Topo Maps (public domain) · Oregon
Public domain
Spray, OR — USGS historical 15-minute topo (1953)
USGS Historical Topo Maps (public domain) · Oregon
Public domain
Entire District Motor Vehicle Use Map (MVUM) — Umatilla National Forest (2026)
Forest Service Maps (public domain) · Umatilla National Forest
Public domain
IFR Enroute Low Altitude Chart L-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-11 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-13 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-01 (Alaska) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Name, class, county and location: USGS Geographic Names Information System (public domain).