Calvin Coolidge, Jr. (April 13, 1908- July 7, 1924) was the son of President Calvin Coolidge and a First Son of the United States, which title he held from August 2, 1923 until his death. Calvin, Jr. was born to Calvin Coolidge and Grace Goodhue Coolidge. His father became President of the United States upon the death of President Warren G. Harding in 1923, when Calvin, Jr. was fifteen years old. Wikipedia
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