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(help) - "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
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(help) - "Geographic Names Information System". United States Geological Survey. Retrieved 2008-01-31.
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(help) - "Find a Country". National Association of Counties. Retrieved 2008-01-31.