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- [S2534] Minnesota, Fillmore County, FCR: Fillmore Co., MN 1880, (http://www.ancestry.com: National Archives and Records Administration, 1999), T9, roll 619, Bristol, enumeration district (ED) 80, p. 377B, dwelling 156, family 162, Caleb Wertman, accessed 11 Dec 2025 (Reliability: 3).
- [S1241] Find A Grave, Find A Grave, ((http://www.findagrave.com/)), accessed 11 Dec 2025), memorial page for Caleb Matlock Wertman (1857–27 May 1900), Find a Grave Memorial ID 192474741; citing Webster Cemetery, Webster, Day County, South Dakota, USA; Maintained by Gaikowski (contributor 49264516). (Reliability: 3).
- [S2544] FamilySearch, Minnesota, U.S., Marriages Index, 1849-1950, ((http://www.ancestry.com : 2011)), accessed 11 Dec 2025), Wertman-Walton, 1879, Fillmore County; citing FHL Film No. 1316805. (Reliability: 3).
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