Also... for the same Highlights Puzzlemania issue, this was an additional game illustrated to go along with the "differences" puzzle. It was made for little kids, but how fast can YOU figure it out?...
Cover and Interior Illustration for Highlights Puzzlemania Book
So... every now and then the little kid in me gets all giddy because I get to work for one of the companies I grew up with. Many a dentist's office visit I spent searching for hidden pictures in a Highlights magazine. Here's a recent cover I got to create for an issue of a Highlights Puzzlemania book. The illustration also appears on the inside with a nearly identical version next to it with 20 differences to find. Check out the pics below in case you're stuck in a dentist's office with nothing to do.
Find twenty differences on the next picture...
Find 20 differences from the previous pic!
Here's the original sketch with cropped areas indicated for cover and interior activity pages.