Big Horn - map search
Topographic map 069027 of scale 1:250 000
English - US Geological Survey - 1958 - 10Mb -
Topographic map 068723 of scale 1:250 000
English - US Geological Survey - 1958 - 11Mb -
Topographic map 068723 of scale 1:250 000
English - US Geological Survey - 1955 - 11Mb -