wheeler ridge - map search
Topographic map 028984 of scale 1:24 000
English - US Geological Survey - 1934 - 3Mb -
Topographic map 068661 of scale 1:250 000
English - US Geological Survey - 1966 - 11Mb -
Topographic map 068661 of scale 1:250 000
English - US Geological Survey - 1955 - 10Mb -