I'm currently updating my long OOP book, ONE GOOD FILM DESERVES ANOTHER: A Pictorial History of the Movie Sequels (1977).
It's a much harder job than I thought.
I recently finished updating THE MUSICAL: From Broadway to Hollywood (1980), which wasn't too bad.
Not looking forward to updating MAKE IT AGAIN, SAM: A Survey of Movie Remakes (1975). That one is going to be a nightmare.
But, my publisher wants them, so...