| Kilder |
- [S46] Ancestry.com, Evangelical Lutheran Church in America Archives; Elk Grove Village, Illinois; Congregational Records (Troverdighet: 3).
- [S82] Folketelling USA 05.01.1920, Census Place: Brooklyn Assembly District 7, Kings, New York; Roll: T625_1154; Page: 15B; Enumeration District: 383 (Troverdighet: 3).
- [S414] USA registreringskort 2. verdenskrig, National Archives at St. Louis; St. Louis, Missouri; WWII Draft Registration Cards for New York City, 10/16/1940 - 03/31/1947; Record Group: Records of the Selective Service System, 147 (Troverdighet: 3).
- [S139] Folketelling USA 15.04.1910, Brooklyn Watd 8, Kings, New York, ED 0145, sheet A 32, p. 324, dwelling 518, family 543, William Pitchard; NARA microfilm publication T624, T624_958. (Troverdighet: 3).
- [S83] Folketelling USA 01.04.1930, Census Place: Brooklyn, Kings, New York; Page: 26A; Enumeration District: 1157; FHL microfilm: 2341245 (Troverdighet: 3).
- [S238] Find a grave, (USA), https://www.findagrave.com/memorial/100433791/olaf-pritchard (Troverdighet: 3).
Accessed 04 December 2023, memorial page for Olaf Pritchard (1902– 29 Jan 1954), Find a Grave Memorial ID 100433791, citing Green-Wood Cemetery, Brooklyn, Kings County, New York, USA; Maintained by Athanatos (contributor 46907585).
- [S46] Ancestry.com, Ancestry.com. New York, New York, U.S., Extracted Marriage Index, 1866-1937 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2014. (Troverdighet: 3).
- [S411] Folketelling USA 01.06.1900, Census Place: Brooklyn Ward 12, Kings, New York; Page: 15; Enumeration District: 0168; FHL microfilm: 1241050 (Troverdighet: 3).
- [S139] Folketelling USA 15.04.1910, Folkräkningsplats: Brooklyn Ward 8, Kings, New York; Rulle: T624_958; Sida: 32a; Räkningsdistrikt:: 0145; FHL-mikrofilm: 1374971 (Troverdighet: 3).
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