humboldt - map search
Topographic map nk10 of scale 1:1 000 000
English - US military - 1957 - 5Mb -
Topographic map nk15 of scale 1:1 000 000
English - US military - 1957 - 3Mb -
Topographic map 068684 of scale 1:250 000
English - US Geological Survey - 1956 - 10Mb -