"Seal of Approval" is a dryly academic book about a colorful and contentious topic, the sort of thing you get when your passion project has to make it past a review board or a thesis adviser. It is nevertheless a deeply researched and informative book, and worth reading if you are serious about learning more about the history of the Comics Code.
The book covers the controversies that lead to the creation of the original Comics Code and then its various revisions through the decades. Unfortunately it is now out of date, as shortly after this book was published Marvel Comics withdrew from the Comics Code Authority. A few years later, DC Comics and Archie Comics also withdrew from the CCA, leaving the Code after sixty plus years entirely defunct.
I would like to know Nyberg's thoughts on these developments.
It is in fact not entirely clear what she thinks of the code overall. While she bemoans the way its restrictions stymied innovation in comics for decades, she also appears to wag her finger at those who insist we can get along without it. But maybe I'm misinterpreting her.
Nyberg also mounts a defense of sorts of Frederic Wertham, the psychologist who was responsible for so much of the panic about comics. Wertham is often criticized for his sloppy or simplistic linkages between comics and juvenile delinquency, most popularly presented in his book Seduction of the Innocents. Nyberg argues that Wertham wasn't trying to build a scientific case against comics per se, but that he was advocating for a holistic, radical program of limiting kids' exposure to mass media of any kind. Seduction wasn't supposed to be science, it was propaganda.
It's hard to see how that makes it better. Or in any way excuses Wertham.
In a work this copiously researched and footnoted, what doesn't get said can be quite deceiving. Nyberg is quick to dismiss certain viewpoints but doesn't really back up her dismissals by digging into them, so it is hard to know how valid they are. Was the Comics Code a major factor in the near-collapse of the comics publishing industry in the late fifties? Nyberg says "No," but doesn't bother to delve into this much. Since you could undoubtedly make a strong counter-argument, it would have behooved her to grapple with this in greater depth or at least to admit the ambiguities.
At any rate, there is a lot of valuable material here for a student of comic book history. Just expect it to be a little dry.