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- [S246] 1870 US Census - KY - Bracken Co.
1870 U.S. census, Bracken County, Kentucky, population schedule, Berlin, p. 292-A, dwelling 17, family 17, Abram Free household; digital images, Ancestry (http://www.ancestry.com : accessed 26 Jun 2026); citing National Archives and Records Administration microfilm M593, roll 449.
- [S247] 1880 US Census - KY - Bracken Co.
1880 U.S. census, Bracken County, Kentucky, population schedule, Berlin, enumeration district (ED) 15, p. 554-A, dwelling 5, family 5, Mary Free household; digital images, Ancestry (http://www.ancestry.com : accessed 26 Jun 2026); citing National Archives and Records Administration microfilm T9, roll 404.
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