Moondust: In Search of the Men Who Fell to Earth
Shortly after that, the author (Andrew Smith) decided to go find each of the men who had walked on the moon, and ask them what they'd done with their lives since walking on the moon. It's a wonderful mix of his own recollections of growing up when Apollo was happening, each of the astronaut's personal backstories and recollections of what it was like to be at the center of the Apollo program, and what life has been like after walking on the moon.
I can't recommend it highly enough. It's being re-issued this summer for the 50th anniversary of the first landing, but you can also order the original version from 2005.