The number of comic-book titles is a particularly elusive figure. As Advertising Age put it, "Statistics in the comic book field are somewhat misleading. A certain amount of duplication and consequent distortion . . ." are present. A number of times when I cited a specific comic book it disappeared—to reappear promptly under a different name. Other titles just disappear, and new ones crop up constantly. So do names of "new" publishing firms. That is why I have called crime comic books "hit and run publications." Often the public does not even know which firm publishes which crime comic book, because the names of the firms publishing crime comic books are almost as elusive as the titles. They change, and quite a number of concerns function under different names for different comic books. To count the number of crime-comic titles at any given moment is therefore just as futile as to publish the names of objectionable comic books.
Crime comic books represented about one tenth of the total of all comic books in 1946-1947. In 1948-1949 they increased to one third of the total. By 1949 comic books featuring crime, violence and sadism made up over one half of the industry. By 1954 they form the vast majority of all comic books.