The Secret Agent X-9 and the Mad Assassin Big Little Book #1472 is a vintage hardcover comic book from 1938, featuring the popular character Secret Agent X-9. Written by Robert Storm and illustrated by Charles Flanders, this "Golden Age" book is part of a series of adventure and detective comics published by Whitman Publishing. With a black and white style and large print format, this collectible piece of US Comics tradition is sure to appeal to fans of classic comic books and vintage literature.