I suspect this is just a paid ad. Columbia Publications, which put out Big Shot, was owned by some big mainstream magazine. I can't remember which offhand, but I've never heard of Short Stories Inc. publishing comics. On a related note, I'm pretty sure I remember hearing that the Target, Blue Bolt group were owned by the company that published the Saturday Evening Post. One last note as I veer totally off the subject, does anyone know why Prize Comics were advertised in various DC comic publications?