pound ridge - map search
Topographic map 320812 of scale 1:63 000
English - US Geological Survey - 1899 - 8Mb -
Topographic map 036231 of scale 1:24 000
English - US Geological Survey - 1960 - 12Mb -
Topographic map 320812 of scale 1:63 000
English - US Geological Survey - 1892 - 7Mb -
Topographic map 072228 of scale 1:250 000
English - US Geological Survey - 1947 - 19Mb -