
Yacolt serves as the central hub of this 1941 tactical survey, situated at the base of Yacolt Mt. The landscape is defined by the winding Lewis River and the significant basin of Lake Merwin, which straddles the Cowlitz and Clark County line. This era captures a region balancing timber management and early electrification, evidenced by the Sunset Guard Sta and the presence of the Golden Wonder Mine.
43 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Portland
USGS Topo · 1:62,500
1905 · Portland
USGS Topo · 1:62,500
1918 · Troutdale
USGS Topo · 1:62,500
1919 · Mount St Helens
USGS Topo · 1:125,000
1934 · Troutdale
USGS Topo · 1:48,000
1940 · Lookout Mtn
USGS Topo · 1:62,500
1940 · Portland
USGS Topo · 1:62,500
1940 · La Center
USGS Topo · 1:62,500
1941 · Camas
USGS Topo · 1:62,500
1942 · Camas
USGS Topo · 1:62,500