perris valley - map search
Topographic map 071212 of scale 1:24 000
English - US Geological Survey - 1953 - 5Mb -
Topographic map 069016 of scale 1:250 000
English - US Geological Survey - 1956 - 12Mb -
Topographic map 396058 of scale 1:250 000
English - US Geological Survey - 1904 - 9Mb -