I loved Curious George books as a kid, especially the one where he eats a puzzle piece. Little did I know that George started out as Fifi, and his creators, Margret and H. A. Rey, were German Jews living in France, who fled by bicycle to escape the invading Nazi army.
Louise Borden researched the story for a book, and the NYT explains almost enough of it to make buying the book unnecessary. It's the damn Catch 22 of publicity, I guess.
Almost, but not quite? Buy The Journey That Saved Curious George: The True Wartime Escape of Margret and H. A. Rey at Amazon.
How Curious George Escaped the Nazis [nyt]
The book I was thinking of: Curious George Goes To The Hospital [amazon]