Though it was a major event, this series does not at all mention the assassination attempt made on Roosevelt's life (when he was President-elect) in February, 1933 in Florida. The attempt resulted in Chicago Mayor, Anton Cermak being slain.
Extremely infamous German/Nazi Leader Adolf Hitler (along with Italian leader Benito Mussolini) is mentioned several times in this series (as well in footage used), but is never portrayed by an actor.