| Kilder |
- [S2] Tvedestrand ministerialbok A 01 1885 - 1916. Tvedestrand sokn, Tvedestrand prgj, Aust-Agder, Levende fødte 1893. Side 29 - nr. 36. Inga. (Troverdighet: 3).
- [S636] Flosta ministerialbok A 01 1885 - 1912. Flosta sokn, Dypvåg prgj, Aust-Agder, Konfirmerede 1908. Side 388-389 - nr. 5. Inga Halvorsen. (Troverdighet: 3).
- [S599] "Emigranter over Kristiansand 1873 - 1930.", https://www.digitalarkivet.no/pe00000000303830 (Troverdighet: 3).
- [S568] Emigranter over Oslo 1867 - 1930, https://digitalarkivet.no/view/8/pe00000001175144 (Troverdighet: 3).
- [S84] Family Search, (USA), https://www.familysearch.org/ark:/61903/3:1:33SQ-G5H9-ZV6?i=93&cc=1923888 (Troverdighet: 3).
- [S46] Ancestry.com, National Archives and Records Administration (NARA); Washington, D.C.; Index to Naturalization Petitions of the United States District Court for the Eastern District of New York, 1865-1957; Microfilm Serial: M1164; Microfilm Roll: 52 (Troverdighet: 3).
- [S83] Folketelling USA 01.04.1930, Census Place: Brooklyn, Kings, New York; Page: 15B; Enumeration District: 1153; FHL microfilm: 2341244 Source Information Ancestry.com. 1930 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2002 (Troverdighet: 3).
- [S277] Nordisk Tidende, New York, USA, (New York, USA.), 02.03.1950 (Troverdighet: 3).
- [S238] Find a grave, (USA), Memorial page for Inga Halvorsen Eckland (3 Nov 1893–23 Feb 1950), Find a Grave Memorial ID 144172244, citing Green-Wood Cemetery, Brooklyn, Kings County, New York, USA; Maintained by Sally - Midcoast Maine (contributor 48138595). (Troverdighet: 3).
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