alto pass - map search

Topographic map 009372 of scale 1:24 000

English - US Geological Survey - 1948 - 10Mb -

Topographic map 050471 of scale 1:63 000

English - US Geological Survey - 1949 - 10Mb -

Topographic map 009372 of scale 1:24 000

English - US Geological Survey - 1947 - 8Mb -

Topographic map 050471 of scale 1:63 000

English - US Geological Survey - 1947 - 11Mb -