assumption - map search
Topographic map 068743 of scale 1:250 000
English - US Geological Survey - 1958 - 9Mb -
Topographic map 068799 of scale 1:250 000
English - US Geological Survey - 1955 - 8Mb -
Topographic map 068743 of scale 1:250 000
English - US Geological Survey - 1961 - 9Mb -
Topographic map 068799 of scale 1:250 000
English - US Geological Survey - 1958 - 8Mb -