Robert De Niro and James Woods created gangster icons for Sergio Leone’s mob masterpiece, Once Upon a Time in America.

In January 1856, Scientific America featured an introduction to nitroglycerin as a safe-cracking tool. It was not to be taken lightly by the time's yeggmen, a slang term for burglars.

The Godfather inspired the gangster movie Once Upon a Time in America, and it is the closest thing fans have to the 1972 masterpiece.

As Collider looks back on classic movies, Sergio Leone's Once Upon a Time in America's narrative is too beautiful for its characters.