I just read about an obscure super hero called Atomas whose strip ran in the Mon Journal (issue #70). So I searched for that publication and it took me here. I think the story was published in the 1940s, but it was set in the 1990s. Interestingly, the art style looked much more sophisticated to me than much of the art running in American comics in 1940; to me, the style looked more like something that might have been published by Marvel in the 1970s. I would be interested in seeing issues of this publication from that era here if anyone has them.
Link to the book:
Mon Journal 1893-01-21