| Sources |
- [S924] Heckethorn, Isaac A. (I24259): 1910 US Census, (www.ancestry.com (2006): National Archives and Records Administration micropublication T624, roll 112, enumeration district (ED) 201, sheet 1A, page 297A, line 12, dwelling 4, family 4; image accessed 1/2/2009.), 1910.CO.Baca.Precinct 2.201.1.
- [S925] Heckethorn, Isaac A. (I24259): 1920 US Census, (www.ancestry.com (2005): National Archives and Records Administration micropublication T625, roll 156, enumeration district (ED) 9, sheet 10B, page 54B, line 95, dwelling 95, family 99; image accessed 1/2/2009.), 1920.CO.Baca.Stonington.9.8.
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