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Just buy this magic hand-held lamp (for an undisclosed price) and you can get relief from "rheumatism, neuralgia, tonsilitis, earache, indigestion, and countless other ailments," says the copy of this ad. "Therapeutic light is known the world over and is recommended by such eminent physicians as Dr JH Kellogg of the famous Battle Creek Sanitorium," the ad goes on to say. (Yes, the Kellogg behind the corn flakes, who is well known as a historic leader of 20th century nut case medical treatments).
When I found this ad in a 1918 issue of Cosmopolitan magazine, I just had to laugh. I am hoping that now that you can see it, you will be laughing too.