Tomart’s Action Figure Digest #202 features one of several articles from the magazine dedicated to the vintage Masters of the Universe toyline. Almost all of the concept art in the article below comes from former Mattel designer Ted Mayer.
The author of the article (who is not named) gets the general thrust of the history of the toyline right for the most part, although there are several factual errors. For instance, the author identifies several variant He-Man and Skeletor designs made midway through the line as early concept versions of the original figures. They also conflate Ted Mayer’s green witch concept with Evil-Lyn (they’re unrelated) and seem to place Vulture Man before Screeech or Zoar (Vulture Man came after).
Still, it’s a fun article with lots of interesting concept art and prototypes. Selections from issues 89, 90 and 91 are available from both He-Man.org and Grayskull Museum (there is definitely some overlap between those articles and this one), but I’m not aware than anyone has shared scans from this particular issue before.