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- [S104] Daniel B Cooley, DBC master CMSB database, (created by Daniel B Cooley, 1968-2006), DBC entry (Reliability: 3).
- [S355] United States Government, Census - main, (Censuses conducted 1790-1930), Deduced from 1840 census (Reliability: 3).
- [S355] United States Government, Census - main, (Censuses conducted 1790-1930), Not in 1840 Iowa State Census (Reliability: 3).
- [S510] Obituary, Obituary by son Stephen Warren Cooley published Elkader Register: November 6, 1890; Locals: Garnavillo (Reliability: 3).
- [S510] Obituary, The Register, D.G. Griffith & Son, Elkader, Iowa, Friday Morning, Nov. 8, 1895, p5. (Reliability: 3).
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