The fashion designer aided in undercover missions for Abwehr during World War II.

The personal contents were placed in a box and weren't revealed until more than 100 years after the president's assassination.

The first lady continued to wear the outfit covered in her husband's blood to convey a message and as a way of coping with her own trauma.

Take a look at images of these American world leaders before they took office.

The unveiling of previously hidden passages in 2018 revealed there was still more to learn about the famed documentarian of Nazi oppression.

Despite JFK's father feuding with the Prime Minister during World War II, the late president idolized and took cues from the British politician.

Research into Leonardo's genealogy traces his family to outside of Italy.

The Prime Minister was rarely spotted without his favorite accessory — a cigar.

The Nobel Prize winner retreated to the Florida island in the 1920s and ultimately discovered a new muse — the city itself.

Many tales have been told about Pocahontas, but not all of them are true.

In a career that spanned four decades, the Nobel Prize-winning author was never without a woman by his side.

Frank Hamer and Maney Gault killed the infamous 1930s crime duo in a torrent of bullets.

Queen Elizabeth II's younger sister led a charmed life as a member of the British royal family but was unlucky in love.

Princess Margaret was a royal rebel who followed a different path in life than her sister, who ascended the throne.

The 1961 visit demonstrated that although Queen Elizabeth's powers were limited, by wielding those powers well, the monarchy could still have an impact.

The scientist's discoveries and theories laid the foundation for modern physics and astronomy.

Learn about how the beloved children's book came to be and the hidden political message in its story.

Despite early criticism, the former Beatle's anthem for peace has withstood the test of time.

One is an American political dynasty. The other is British royalty. Though from different worlds, their lives have been intertwined for decades.

These paved the way for other female artists through their paintings, sculptures, films, photos, and illustrations.

The work of these women was overlooked during their lifetime with men receiving recognition instead.

Despite being one of the most influential people of the 20th century, Disney endured many failures before creating 'the Happiest Place on Earth.'

It lasted just seconds, but the brief interaction between JFK and Bill Clinton inspired the teen to a life of public service — and helped lead to his own election as president 30 years later.

Prior to writing 'James and the Giant Peach,' 'Charlie and the Chocolate Factory,' 'Matilda,' and more, Roald Dahl was a fighter pilot and a spy during World War II.