Bonnie & Clyde
Buck Barrow and his brother, Clyde, had built up a bit of a following before Bonnie Parker attracted a following, but she wasn't anywhere near as famous in life as she became in death.

John Dillinger
He wasn't the first gangster to be listed as America's most wanted, but John Dillinger remains our most famous twentieth century bank robber.

Frank Nash
Forgotten today, Frank Nash was a central figure in one of the most infamous events in American crime history — the Union Station Massacre in Kansas City, Missouri, in 1933.
Harvey Bailey
America's most-wanted man in the summer of 1933. Harvey Bailey began and ended the year in prison. Unlike most robbers of the 1920s and '30s, Bailey managed to reach old age.

"Machine Gun" Kelly
George Francis Barnes Jr. probably doesn't register with anyone, but as "Machine Gun" Kelly, Barnes became famous, though he wasn't fond of the weapon that gave him such a colorful nickname.

Verne Sankey
No clever nickname was ever found the first criminal to be listed as America's most-wanted, in 1933. Sankey was a prime suspect whenever a clever or efficient kidnapping or robbery was reported.
Leonard Scarnici
You name the crime, New York City-based Prohbition-era hitman Leonard Scarnici probably committed it at least once.

Harry Sitamore
The man sometimes called the greatest jewel thief of his day had a different alias for every day of the week, and then some.

Wilbur Underhill
If John Dillinger had a rival for the title of most-feared outlaw, he would have been Wilbur Underhill, known as "The Tri-State Terror."

Verne Miller
Formerly a soldier and a policeman, Vernon Clate Miller was blamed for crimes he didn't commit, while those he did commit were sometimes blamed on others.

Waxey Gordon
A bootlegger who thrived in the 1920s, he's remembered today as the man who gave Gypsy Rose Lee a boost by sending her to a dentist to do something about her worst feature — her teeth.
Gus Winkler
He supposedly began his short life of crime in Detroit with the legendary "Purple Gang", then moved to Chicago and found a spot in the Al Capone organization.