Sixmile Spring (historical)
Spring in Okanogan County, Washington · on the USGS Strawberry Mountain quadrangle
48.44544, -118.92197
Maps that show Sixmile Spring (historical)
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Strawberry Mountain, WA
USGS topo, 2023

Bald Knob, WA — USGS historical 15-minute topo (1953)
USGS Historical Topo Maps (public domain) · Washington

IFR Enroute Low Altitude Chart L-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)

IFR Enroute Low Altitude Chart L-13 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)

IFR Enroute High Altitude Chart H-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)

IFR Enroute Low Altitude Chart L-01 (Alaska) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).