There aren't many rumors that American socialite Wallis Simpson hasn't been subjected to. So here's how she actually infiltrated the British monarchy.

How Wallis Simpson Infiltrated British Royalty (4:18)

Prepare to be amazed.

Ask Smithsonian: What’s a Stone Baby? (1:07)

With the development of better flight technology, commercial air travel received an unprecedented boom in the 1960s. But to fully sell the glamor of flying, the airlines needed these women on board.

Air Travel Was a Party, and They Were the Hosts (2:57)

In this exclusive clip from the 1930s, Confederate veterans step up to the mic and let out their version of the fearsome rallying cry

What Did the Rebel Yell Sound Like? (4:22)