There's just one novel, The Godfather by Mario Puzo, which incorporates GF1 and the early-Vito segments of GF2. The rest of the trilogy story was written by Puzo and Francis Coppola for the screenplays.
Welcome to the board!
Geoff
Posted By: Anonymous
Re: How many novels - 08/21/0107:02 PM
Also, there are elements from the films (aswell as characters) in several others books, among them The Sicilian, Omerta etc, just check everything at the Mario Puzo store, you'll be amazed