| Sources |
- [S724] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Coolidge John Calvin Sr #323239 http://thepeerage.com/p32324.htm#i323239.
- [S724] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Coolidge Calvin Galusha #322710 http://thepeerage.com/p32271.htm#i322710.
- [S724] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Coolidge Calvin #322708 http://thepeerage.com/p32271.htm#i322708.
- [S742] Ancestry.com, Vermont, Death Records, 1909-2008, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2010;).
Record for John Calvin Coolidge
http://search.ancestry.com/cgi-bin/sse.dll?db=VermontDeaths&h=172651&indiv=try
- [S432] Ancestry.com, 1850 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), Year: 1850; Census Place: Plymouth, Windsor, Vermont; Roll: M432_931; Page: 427A; Image: 441.
Record for Calvin G Coolidge
http://search.ancestry.com/cgi-bin/sse.dll?db=1850usfedcenancestry&h=1354393&indiv=try
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