Madison County
Estimated GPS Coordinates: 38.897584,-90.185523
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Alton, Illinois Mobile and Ohio Roundhouse 1938
Illinois Historical Aerial Photographs
Alton, Illinois Mobile and Ohio Roundhouse Map 1927
USGS topoView
Alton, Illinois Mobile and Ohio Roundhouse 1945
USGS Earth Explorer
Alton, Illinois Mobile and Ohio Roundhouse 1968
