East Troy - map search

Topographic map 013492 of scale 1:24 000

English - US Geological Survey - 1960 - 7Mb -

Topographic map 069099 of scale 1:250 000

English - US Geological Survey - 1962 - 17Mb -

Topographic map 053638 of scale 1:63 000

English - US Geological Survey - 1892 - 8Mb -