| Kilder |
- [S277] Nordisk Tidende, New York, USA, (New York, USA.), 13.12.1945 (Troverdighet: 3).
- [S238] Find a grave, (USA), Memorial page for Percival Alexander "Percy" Harney Jr. (23 Apr 1918–7 Feb 1991), Find a Grave Memorial ID 754782, citing Calverton National Cemetery, Calverton, Suffolk County, New York, USA; Maintained by Joe McKenzie (contributor 46854853). (Troverdighet: 3).
https://www.findagrave.com/memorial/754782/percival-alexander-harney
- [S124] Folketelling USA 01.04.1950, Seventeenth Census of the United States, 1950; År: 1950; Folkräkningsplats: New York, Kings, New York; Rulle: 2659; Sida: 27; Räkningsdistrikt:: 24-900 (Troverdighet: 3).
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