silver ridge - map search
Topographic map 069102 of scale 1:250 000
English - US Geological Survey - 1966 - 12Mb -
Topographic map 063620 of scale 1:63 000
English - US Geological Survey - 1888 - 4Mb -
Topographic map 069102 of scale 1:250 000
English - US Geological Survey - 1972 - 12Mb -