
In 1967, thirty years before this was printed, I had sold a similar cartoon to King Features Syndicate, with six sales charts on the wall. You can see that one here.
I dropped two charts and made other changes, including a slightly re-worded caption, but basically it's still the same gag.
Hmmm . . . maybe I can re-draw it again, using only two charts . . .

Another cartoon published with my signature cropped off.
Sun, the weekly tabloid which printed this cartoon this week, is famous (or should I say infamous) for merciless cropping of their cartoons. In fact, of the four cartoons published in this issue, there was not a single cartoonist's signature to be seen. I recognized one of them to be in the distinctive, inimitable style of good ol' Bob Vojtko, who hails from Strongsville, Ohio. But, sadly, I couldn't identify either of the other two cartoonists.