The content of comic books has been governed by an industry self-regulatory code adopted by publishers in 1954 in response to public and governmental pressure. This book, the first full-length study of this period of comic book history, examines the reasons that comic books were the subject of heated controversy. In tracing the evolution of the controversy and the resulting code, Seal of Approval shows that the comic book has yet to achieve legitimation as a unique form of expression appreciated by readers of all ages.