We know a surprising amount about the dental history of the nation’s first president.

For most of American history, Washington's Birthday was a really big deal, but, as scholar Barry Schwartz explains, that's changed a lot since the middle of the twentieth century.

Often the subject of conspiracy theories, Masons captured the allegiance of much of the early American elite.

The Presidential Inauguration is January 20th as a result of a twentieth century change to the U.S. Constitution. Originally, it was March 4th.

What is Flag Day, again? Early American flags were all over the place. There was no consensus about the flag until 25 years after the Revolution.