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- [S1886] Hatch, Carleton Leon: Birth Announcement (Union City), (Public Library, Union City, Pennsylvania, online at ).
- [S1107] Hatch, Leon W. (I2329): 1910 US Census, (www.ancestry.com (2006): National Archives and Records Administration micropublication T624, roll 1343, enumeration district (ED) 133, sheet 31A, page 16A, line 13, dwelling 735, family 782; image accessed 12/30/2008.), 1910.PA.Erie.Union Ward 1.133.31.
- [S1887] Hatch, Carleton Leon: Grave Marker, (Evergreen Cemetery, Union City, Erie, PA.).
- [S1106] Hatch, Leon W. (I2329): 1900 US Census, (www.ancestry.com (2004): National Archives and Records Administration micropublication T623, roll 1409, enumeration district (ED) 124, sheet 7A, page 162A, line 9, dwelling 140, family 140; image accessed 12/30/2008.), 1900.PA.Erie.Union City.124.12.
- [S1510] Hatch, Verna M. Cupples: Obit (Union City), (Public Library, Union City, Pennsylvania, online at ).
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