• [S13] Richard Circle, "Circle Family History," in Zirkle Family Hist. Ass'n Newsletter, vol. 7, no. 2 (Jun 1989).
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  • [S736] Walter Golladay, electronic mail to Roger Bartlett, 26 Mar 2002.
  • [S850] Linda Cyers, electronic mail to Roger Bartlett, 1 Jul 2003.
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  • [S908] Biography of Jonathan Winter, online http://www.rootsweb.com/~inmontgo, viewed on 27 Dec 2003 (citing H. W. Beckwith, History of Montgomery County, Indiana (Chicago, Ill.: Beers, 1881), p. 245.
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  • [S1325] The Jamestown Press, Jamestown, Ind., online at http://www.myheritage.com
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  • [S1468] The Richmond Item, Richmond, Ind., online at http://www.newspapers.com
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  • [S1528] Texas Marriages, 1966-2010, online at https://www.familysearch.org
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  • [S2238] Obituary for Mamie Buchanan Loop, online at findagrave.com, https://tinyurl.com/bda6xvhm, viewed on 23 Apr 2023.
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  • [S2282] Obituary for Euphemia Dice Loop, Crawfordsville Daily Journal, Crawfordsville, Indiana, 2 May 1946, p. 6, col. 2, image provided by Crawfordsville District Public Libary on 18 Jul 2023.
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