ashton - map search
Topographic map 001694 of scale 1:24 000
English - US Geological Survey - 1953 - 5Mb -
Topographic map 068774 of scale 1:250 000
English - US Geological Survey - 1954 - 8Mb -
Topographic map 068651 of scale 1:250 000
English - US Geological Survey - 1958 - 11Mb -