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- [S270] California, Death Index, 1940-1997, "California, Death Index, 1940-1997"FamilySearch (https://www./ark:/61903/1:1:VPQQ-BXM : Tue Feb 25 17:15:59 UTC 2025), Entry for Harold Thomas Power and Power, 29 Mar 1942.
- [S270] California, Death Index, 1940-1997, "California, Death Index, 1940-1997"FamilySearch (https://www./ark:/61903/1:1:VPWN-5MR : Tue Feb 25 18:15:06 UTC 2025), Entry for Raymond Thomas Power and Power, 23 Apr 1958.
- [S185] California, County Birth and Death Records, 1800-1994, "California, County Birth and Death Records, 1800-1994"FamilySearch (https://www./ark:/61903/1:1:QGLW-4571 : Fri Mar 08 07:28:35 UTC 2024), Entry for McKinley Power and Harold T Power, 21 October 1900.
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- [S27] Find a Grave Index, "Find a Grave Index"FamilySearch (https://www./ark:/61903/1:1:QVKZ-W2RG : Thu Apr 03 02:37:18 UTC 2025), Entry for Harold Thomas Power.
- [S277] United States Census, 1860, "United States Census, 1860"FamilySearch (https://www./ark:/61903/1:1:MDK4-RWB : Mon Jul 08 03:54:58 UTC 2024), Entry for M H Powers and Iralin Powers, 1860.
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- [S554] United States Census, 1920, "United States Census, 1920"FamilySearch (https://www./ark:/61903/1:1:MH3D-C3K : Mon Jan 20 07:15:35 UTC 2025), Entry for Harold T Power and Mary ? Power, 1920.
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- [S552] United States Census, 1930, "United States Census, 1930"FamilySearch (https://www./ark:/61903/1:1:XCX3-2Q8 : Sat Jul 13 10:58:02 UTC 2024), Entry for Harold T Power and Treasure M Power, 1930.
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- [S553] United States Census, 1940, "United States Census, 1940"FamilySearch (https://www./ark:/61903/1:1:K97L-ZDF : Mon Mar 11 00:20:51 UTC 2024), Entry for Frances H Weldon and Harold T Power, 1940.
- [S352] California, San Francisco County Records, 1824-1997, "California, San Francisco County Records, 1824-1997"FamilySearch (https://www./ark:/61903/1:1:QL4P-15DB : Wed Jul 17 11:58:34 UTC 2024), Entry for Harold T Power and Mary V Sweeney, 23 Nov 1881.
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