I am Jack's original publisher
Have never seen anywhere that these were real articles. The were (and are,) only the name, oddly enough, was in fact 'Joe'. I read them all as a kid when I would visit my grandparents. They appeared in Reader's Digest throughout the early 70's or so.
I also just found this: [url]http://www.pyramidmedia.com/series.php?title_id=1698[/url]