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Spatial Coverage
- Mississippi River[remove]33
- Mississippi River Valley8
- Missouri River8
- Louisiana5
- Mississippi River.5
- Breton Sound (La.)2
- Borgne, Lake (La.)1
- Breton Sound.1
- East Saint Louis Region1
- Illinois1
- Iowa1
- Iowa City Region1
- Itasca State Park (Minn.)1
- Itasca, Lake (Minn.)1
- Mexico, Gulf of1
- Middle West1
- Middle West.1
- Mississippi River Delta (La.)1
- Mississippi River Valley.1
- Missouri1
