Fyi, I previously researched that Women War Workers logo (WWW with the torch) on Famous Funnies #110 as I'm also rather fond of that issue/copy.
It was an official logo created for the express purpose of a “Women at Work Cover Promotion.” The Magazine War Guide (part of the U.S. Office of War Information) recommended all magazines participate in their September 1943 publications. The slogan for this campaign was “The More Women at Work the Sooner We Win.”
Norman Rockwell got behind the effort, painting “Liberty Girl’ for the Saturday Evening Post. I was able to find a number of participating magazines. In regard to comics, Famous Funnies #110 appears to be the only comic published with the promotion (other comics stuck to the standard buy war bonds theme). Superman that month was a classic image of him standing strong with the American flag in hand.