Highly suggest you take a look at “Genesis: The Story of Apollo 8,” by the same Author.
http://behindtheblack.com/books/genesis-the-story-of-apollo-8/
There is a nice podcast from The Moore Show, discussing the book, that I’ll post sometime later. (Or just search Moore Show + Apollo 8, at YouTube. Just be aware Google confuses this Robert Zimmerman, with Bob Dylan, George Zimmerman, and a revolting lefty hack with the same name.)
Here you go:
The Moore Show:
“Robert Zimmerman - The Future of Space Exploration & Apollo 8”
May 2013
https://youtu.be/jSMnjT-OuJA
-audio with graphics-
(56:12)