| Kilder |
- [S2] Tvedestrand ministerialbok A 01 1885 - 1916. Tvedestrand sokn, Tvedestrand prgj, Aust-Agder, Levende fødte 1899. Side 57 - nr. 29. Helena Maria. (Troverdighet: 3).
- [S46] Ancestry.com, USA, evangelisk-lutherska kyrkan i USA, register, 1781-1969 [database on-line]. Lehi, UT, USA: Ancestry.com Operations, Inc., 2015. (Troverdighet: 3).
- [S238] Find a grave, (USA), Memorial page for Helena M Pederson Graham (12 Oct 1899–7 May 1995), Find a Grave Memorial ID 207305287, citing Craftsbury Common Cemetery, Craftsbury, Orleans County, Vermont, USA; Maintained by Cindy Walcott (contributor 48460179). (Troverdighet: 3).
https://www.findagrave.com/memorial/207305287/helena_m-graham
- [S2] Tvedestrand ministerialbok A 01 1885 - 1916. Tvedestrand sokn, Tvedestrand prgj, Aust-Agder, I Ægteskab Indtraadte 1888. Side 203 - nr. 3. Aslak Pedersen, styrmand og Ingeborg Randine Olsen. (Troverdighet: 3).
- [S17] Folketelling Norge 01.01.1891, (Norge), 0914 Holt herred (Troverdighet: 3).
https://www.digitalarkivet.no/pf01052864003161
- [S46] Ancestry.com.
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