The very first Prometheus Hall of Fame Award, back in 1983, was given, in a tie, to Robert Heinlein’s The Moon Is a Harsh Mistress and Ayn Rand’s Atlas Shrugged. The Moon Is a Harsh Mistress, published in 1966, won the Hugo for best novel in 1967. It was a favorite of mine when I read it during the 1970s, as a high school student. Evidently it was a favorite of lots of people.
Tyler Cowen, the influential libertarian-leaning blogger, author and columnist, recently re-read The Moon Is a Harsh Mistress and found that it holds up.