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Facts and Events
References
- ↑ 1.0 1.1 McDonough, Illinois, United States. 1910 U.S. Census Population Schedule: Thirteenth Census of the United States, NARA Microfilm Publication T624. (Washington D.C.: National Archives and Records Administration).
- ↑ Mercer, Illinois, United States. 1930 U.S. Census Population Schedule: Fifteenth Census of the United States, NARA Microfilm Publication T626. (Washington D.C.: National Archives and Records Administration).
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