I actually found this picture of the artist himself in an advertisement out of an old (1958) issue of McCall's Magazine. This was a full-page advertisement from the "Famous Artists Schools.
They were "Looking For People Who Like to Draw", and you could send in for their Famous Artists Talent Test:
I'll probably come across more examples soon - that seems to happen to me alot when I post something!
If I do, I may just add a couple more in here.
(To see my previous post featuring more artwork, click here.)