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- [S1164] Hatch, Charles M. (I17679): 1930 US Census, (www.ancestry.com (2002): National Archives and Records Administration micropublication T626, roll 170, enumeration district (ED) 1276, sheet 5A, page 32A, line 33, dwelling 131, family 132; image accessed 12/30/2008.), 1930.CA.Los Angeles.Pasadena.1276.9.
- [S1976] Hatch, Helen Beecher: Death Index (CA), (Provo, UT, USA: The Generations Network, Inc., 2000. Original data: State of California. California Death Index, 1940-1997. Sacramento, CA, USA: State of California Department of Health Services, Center for Health Statistics.).
- [S1163] Hatch, Charles M. (I17679): 1910 US Census, (www.ancestry.com (2006): National Archives and Records Administration micropublication T624, roll 1342, enumeration district (ED) 95, sheet 3B, page 195B, line 58, dwelling 31, family 42; image accessed 12/20/2008.), 1910.PA.Erie.Erie Ward 4.95.5.
- [S1868] Hatch, Charles M. (I17679): 1920 US Census, (www.ancestry.com (2005): National Archives and Records Administration micropublication T625, roll 1565, enumeration district (ED) 97, sheet 12B, page 240B, line 76, dwelling 299, family 299; image accessed 12/30/2008.), 1920.PA.Erie.Erie Ward 4.97.24.
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