'Stardrift' or 'Nail Down the Stars' by John Morressy is a cold war fiction novel about an orphan who runs off and joins the circus. He changes his name at every landfall to hide from the men who killed his parents.
This is a book about the loss of human knowledge and the fear of nuclear war. We are left with the questions of 'what happened to the earth?' and 'What will become of humanity?' This is a haunting story of misinformation and fear as much as it is a bleak view of the human animal.