lake san marcos - map search
Topographic map 037004 of scale 1:24 000
English - US Geological Survey - 1949 - 9Mb -
Topographic map 069016 of scale 1:250 000
English - US Geological Survey - 1947 - 15Mb -
Topographic map 037004 of scale 1:24 000
English - US Geological Survey - 1948 - 9Mb -
Topographic map 069016 of scale 1:250 000
English - US Geological Survey - 1956 - 12Mb -