re: Shepard and Armstrong
Moonshot was also a Slayton and Shepard biography (while Shepard was still alive) and it explained Apollo 14 to some extend. I wonder if the latest Shepard biography mentions Apollo 14.
I couldn't find anything more than his first Mercury flight.
I bought Armstrong's book and finally there's something written about him!
Scott and Leonov have also written one together:Two sides of the Moon.
It came home at the same time as Armstrong's.
Raoul