Tim, no, there has not been an article in CBM about Dennis. There is a certain snobbery in the comic hobby, I feel, where some titles are not deemed worthy of recognition. Many Archie & Harvey collectors I know feel the same way. It is an egregious oversight, especially considering Dennis has had numerous movies, tv shows, multiple comic series ranging across decades, and continuous worldwide syndication for over fifty years even after the death of his creator. Dennis is more of a household name in this day and age than Uncle Scrooge or even Tarzan. (If not for the recent Disney movie, I'm not sure any of today's kids would even know who Tarzan is.) It's a blight on the hobby that Ketcham could not see his creation on the cover of the Overstreet Guide or CBM before his death. The only homage I've seen paid toward Ketcham in our hobby is by Fred Hembeck and one of Ketcham's biggest fans, Matt Groening.
Joe
Au contraire...IIRC there was a GREAT article in CBM about Dennis, only not what you're expecting. The premise was that DTM has been replaced by a doppelganger of sorts - as evidenced by the fact that he is no longer the "menace" he used to be. The troubles he causes now are nothing in comparison to those he did in the 50s & 60s. I'll see if I can dig it up and scan it.
Incredible thread, by the way. Should definitely be archived.