Yes, ELA would seem to me to be a high specificity but quite probably low sensitivity test. In other words, if you take a large collection of photos and do an ELA, and look at those that fail they'll almost all be photoshopped.
Given the source, we would assume the photo is authentic, and correctly dated to c.1940. Indeed, an Error Level Analysis suggests the image was not digitally tampered with, or at least that if it was, the author was smart enough to normalize the error across the whole thing. It’s a good job, if it was a job. And again, given the source, we would assume it was not a job.
When did men stop wearing hats? And why?
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