Last weekend was the golden anniversary of the publication of the original Godfather novel by Mario Puzo. Francis Ford Coppola’s 1972 movie version was infinitely better than the novel, and his sequel movie, starring Robert De Niro as a young Vito Corleone in flashback scenes while Al Pacino moved forward as youngest son Michael, was even better than the first film. For a while there, every iteration of The Godfather improved impressively upon its predecessors. And then came The Godfather Part III…