Just another onMason site
- en.wikipedia.org/wiki/Calvin_Coolidge
- http://www.whitehouse.gov/about/presidents/calvincoolidge
- http://millercenter.org/president/coolidge
- http://www.calvin-coolidge.org/
- http://www.history.com/topics/calvin-coolidge
- http://www.brainyquote.com/quotes/authors/c/calvin_coolidge.html
- http://www.forbeslibrary.org/coolidge/coolidge.shtml
- http://www.britannica.com/EBchecked/topic/136173/Calvin-Coolidge
- http://www.ipl.org/div/potus/ccoolidge.html
- http://www.pbs.org/wgbh/americanexperience/features/biography/presidents-coolidge/