Probably several things, but one that comes to mind: he was the first US president to appear in a "talkie" (a motion picture with sound).
First inauguration of Calvin Coolidge happened on 1923-08-03.
Calvin was his middle name; his first name was actually John.
Calvin Coolidge's birth name is John Calvin Coolidge.
No, Calvin Coolidge is not single.
Coolidge was 51 when he first became President.
Calvin Coolidge
What is an intresting fact about Calvin Coolidge
Calvin Coolidge's weight was 168lbs
His full name was John Calvin Coolidge Jr.
Calvin Coolidge was the 30th President of the United States. At birth he was named John Calvin Coolidge Jr. Later in his life he removed his first name to be known as Calvin Coolidge Jr.
Calvin Coolidge John Calvin Coolidge Jr. was the 30th president of the U.S.
Calvin Coolidge is the only president born on July 4th. He was born in Plymouth, Vermont on July 4, 1872.