What is Calvin Coolidge?
{{Use mdy dates|date=May 2020}} {{Infobox officeholder | image = President Calvin Coolidge, 1924 head-and-shoulders portrait, facing slightly right.tif | caption = Coolidge in 1924 | order = 30th | office = President of the United States | term_start = August 2, 1923 | term_end = March 4, 1929 | vicepresident = ''None'' (1923–1925){{Efn|Coolidge was Vice President under [[Warren G. Harding]] and became President upon Harding's death on August 2, 1923. As this was prior to the adoption of the [[25th Amendment to the United States Constitution|Twenty-Fifth Amendment]] in 1967, a vacancy in the office of Vice President was not filled until the next ensuing election and inauguration.}}<br />{{nowrap|[[Charles G. Dawes]] (1925–1929)}} | predecessor = [[Warren G. Harding]] | successor = [[Herbert Hoover]] | office2 = 29th [[Vice President of the United States]] | term_start2 = March 4, 1921 | term_end2 = August 2, 1923 | president2 = Warren G. Harding | predecessor2 = [[Thomas R. Marshall]] | successor2 = [[Charles G. Dawes]] | order3 = 48th [[Governor of Massachusetts#List of Governors|Governor of Massachusetts]] | lieutenant3 = Channing H. Cox | term_start3 = January 2, 1919 | term_end3 = January 6, 1921 | predecessor3 = [[Samuel W. McCall]] | successor3 = [[Channing H. Cox]] | office4 = 46th [[Lieutenant Governor of Massachusetts]] | governor4 = [[Samuel W. McCall]] | term_start4 = January 6, 1916 | term_end4 = January 2, 1919 | predecessor4 = [[Grafton D. Cushing]] | successor4 = Channing H. Cox | office5 = [[President of the Massachusetts Senate]] | term_start5 = 1914 | term_end5 = 1915 | preceded5 = [[Levi H. Greenwood]] | succeeded5 = [[Henry Gordon Wells]] | office6 = [[Massachusetts Senate#Me