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- [S241] Folketelling USA 01.04.1940, Census Place: Leyden, Cook, Illinois; Roll: m-t0627-00781; Page: 18B; Enumeration District: 16-250 (Troverdighet: 3).
- [S46] Ancestry.com, U.S., Social Security Applications and Claims Index, 1936-2007 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2015. (Troverdighet: 3).
- [S46] Ancestry.com, U.S., Social Security Death Index, 1935-2014 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2014. (Troverdighet: 3).
- [S238] Find a grave, (USA), https://www.findagrave.com/memorial/229044200/john-anton-anderson (Troverdighet: 3).
Accessed 12 January 2024, memorial page for John Anton Anderson (18 Aug 1905– 16 Sep 1988), Find a Grave Memorial ID 229044200, citing Memory Gardens Cemetery, Arlington Heights, Cook County, Illinois, USA; Maintained by Mark Goebel (contributor 48218627).
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