| Kilder |
- [S82] Folketelling USA 05.01.1920, Census Place: Brooklyn Assembly District 3, Kings, New York; Roll: T625_1148; Page: 10A; Enumeration District: 145 (Troverdighet: 3).
- [S468] Ancestry.com. U.S.Evangelical Lutheran Church in America Church Records, 1781-1969 [database on-line]. Lehi, Utah, USA: 2015, Evangelical Lutheran Church in America Archives; Elk Grove Village, Illinois; Congregational Records (Troverdighet: 3).
- [S46] Ancestry.com, U.S., Department of Veterans Affairs BIRLS Death File, 1850-2010 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2011 (Troverdighet: 3).
- [S238] Find a grave, (USA), Memorial page for Arnold L Tellefsen (18 Dec 1913–May 1987), Find a Grave Memorial ID 161288097, citing Saint John Cemetery and Mausoleum, Middle Village, Queens County, New York, USA; Maintained by cfenters (contributor 46996728). (Troverdighet: 3).
https://www.findagrave.com/memorial/161288097/arnold-l-tellefsen
- [S46] Ancestry.com, New York, New York, U.S., Extracted Marriage Index, 1866-1937 [database on-line]. Provo, Utah, USA: Ancestry.com Operations, Inc., 2014. Certificate Number: 8022 (Troverdighet: 3).
- [S46] Ancestry.com, New York, New York, U.S., Marriage License Indexes, 1907-2018 [database on-line]. Lehi, Utah, USA: Ancestry.com Operations, Inc., 2017.New York City Municipal Archives; New York, New York; Borough: Queens (Troverdighet: 3).
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