The attached cartoon from a 1922 issue of Punch addressed another kind of American Expeditionary Force; when Pershing's Doughboys left, they were replaced by the American tourists.
There is another article on this site that states a popular belief held by the Europeans of 1919 that American men were all clean shaven, tended to sport gold teeth, and were most easily recognized by their "big tortoise shell glasses" (a strikingly accurate description of this site's editor!); however, this is the first visual manifestation of this caricature that we could find. This cartoonist did not simply believe that this was a fitting description of the white guys, but black guys, too -and our womenfolk as well; an entire nation resembling Harold Lloyd.