Selznick covers every aspect of the film's production, and has seemingly interviewed all of the key cast and crew, including Scorsese. Numerous on-set photos are included, along with script extracts, storyboards, and pre-production sketches. Scorsese has contributed a short essay on the influences of the Lumiere brothers and Georges Melies.
Given Selznick's proximity to the film's source novel, he's not really objective enough to write a making-of book. Fortunately, though, self-references are kept to a minimum - except in the final chapter, when he describes his own cameo role with false modesty and excessive detail.