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Source - Year: 1915; Iowa State Census Collection, 1836-1925; Census Place: Fairbank, Buchanan, Iowa; Roll: IA1915_58; Image: 314
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Henry A. Trebon - line 89
Source - Year: 1920; Census Place: Fairbank, Buchanan, Iowa; Roll: T625_479; Page: 3B; Enumeration District: 62; Image: 1107.
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Henry A. Trebon - line 117
Source - Year: 1925; Iowa State Census Collection, 1836-1925; Census Place: Fairbank, Buchanan, Iowa; Roll: IA1925_1621; Image: 43