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- [S9] 1910 United States Federal Census, (National Archives and Records Administration), T624., roll 1160. Clermont County, Ohio, Washington township, ED 053, sheet 06-B, dwelling 154, family 156, Albert Preuer (Reliability: 3), 1 Mar 2012.
- [S8] 1920 United States Federal Census, (National Archives and Records Administration), T625., roll 1355. Clermont County, Ohio. Washington township, ED 074, sheet 04-A, dwelling 56, family 88, Albert Preuer (Reliability: 3), 1 Mar 2012.
- [S5] 1930 United States Federal Census, (National Archives and Records Administration), T626., roll 1758. Clermont County, Ohio. Washington township, ED 23, p. 09-B, dwelling 207, family 208, Noah Preuer (Reliability: 3), 1 Mar 2012.
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