Hitler's back. A mad scientist thought he could reform him; make Hitler a productive member of our future society. He was wrong. Now, the only thing standing between mankind and total oblivion is Albert Einstein. Einstein has hand picked the greatest minds in history to face off against this great evil. But who will prevail the latest iteration of The Third Reich? Or the Heroes of Science!

Annotations and commentary

Panel 2
I tried to research C1905 carnival owners, hoping that there was a Barnum type figure out and about in France. There wasn't. Just imagine that this guy is time-travelling PT Barnum with some plastic surgury. Or something.