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Subject (Topic)
- Railroads--Wisconsin--Maps8
- Geological surveys--Wisconsin3
- Railroads--Middle West--Maps3
- Geology--Wisconsin--Maps2
- Railroads--Michigan--Maps2
- Counties--Michigan--Maps1
- Counties--Wisconsin--Maps1
- Geology--Illinois--Maps1
- Geology--Iowa--Maps1
- Hydrography--United States--Wisconsin--Maps1
- Lakes--Wisconsin--Oconomowoc--Maps1
- Lakes--Wisconsin--Waukesha County--Maps1
- Lead mines and mining--Illinois--Maps1
- Lead mines and mining--Wisconsin--Maps1
- Lead--Illinois--Maps1
- Lead--Wisconsin--Maps1
- Mines and mineral resources--Illinois--Maps1
- Mines and mineral resources--Iowa--Maps1
- Mines and mineral resources--Wisconsin--Ma1
- Mines and mineral resources--Wisconsin--Maps1