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1.
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Title: Ohio. Ottawa County. 1880 U.S. Census, population schedule, Bay township. National Archive microfilm publication T9 roll 1056
Page: E.D. 65, sheet 26B, dwelling 187, family 187
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2.
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Title: Ohio. Ottawa County. 1900 U.S. Census, population schedule, Bay township. National Archive microfilm publication T623 roll 1311
Page: E.D. 123, sheet 5B, dwelling 93, family 96
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3.
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Title: Bahnsen Family Births, Deaths, and Marriages
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