I read my dad's copy (ORIGINAL edition) when I was 15.
While we're on the subject of Mario Puzo, I should also mention that I loved "The Sicilian," a fictionalized portrayal of the legendary bandit Salvatore Giuliano, in which Michael Corleone is a tangential character.
9 posted on 12/06/2008 6:15:15 PM PST by Clemenza
(Red is the Color of Virility, Blue is the Color of Impotence)