Billerica - map search

Topographic map 003922 of scale 1:24 000

English - US Geological Survey - 1950 - 10Mb -

Topographic map 056947 of scale 1:63 000

English - US Geological Survey - 1921 - 9Mb -

Topographic map 056947 of scale 1:63 000

English - US Geological Survey - 1918 - 11Mb -