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- [S124] U.S. Social Security Administration, United States -- Social Security Death Index, (United States Social Security Death Index (https://www.familysearch.org/search/collection/1202535 : 2016)), 24 Oct 2020, entry for Dale A. Calkins, 1993, accessed 24 Oct 2020.
- [S287] Fillmore Cemetery (Andrew County, Missouri), Missouri, Andrew County -- Fillmore Cemetery (PACT), 20 Oct 2020, Dale and Maxine Calkins marker, photographed by PACT.
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