John May is listed as a contributing editor for the Star Wars Official Poster Monthly publication from its second (2) to its fifteenth (15) editions. Subsequently, he took on the role of editor, managing issues 16 through 18. It's also possible that he contributed as an editor to the inaugural issue.
Furthermore, he penned several articles for the magazine, including:
- Star Wars Official Poster Monthly 2: "Darth Vader Lives"
- Star Wars Official Poster Monthly 3: "Han Solo—Rogue Spacer!"
- Star Wars Official Poster Monthly 4: "Luke Skywalker—From Youth to Man"
- Star Wars Official Poster Monthly 5: "Chewbacca—Star Wars' Friendliest Alien"
- Star Wars Official Poster Monthly 6: "The Lowdown on Artoo"
- Star Wars Official Poster Monthly 7: "George Lucas—A Man and His Movies"
- Star Wars Official Poster Monthly 8: "The Special Effects Wizards"
- _Star Wars Official Poster Monthly 9: "Ralph McQuarrie: Visualizer"
- Star Wars Official Poster Monthly 10: "The Star Wars Snowball"
- Star Wars Official Poster Monthly 11: "The Men Behind the Masks"
- Star Wars Official Poster Monthly 12: "The Soundmaster"
- Star Wars Official Poster Monthly 13: "The Model Squad"
- Star Wars Official Poster Monthly 14: "The Machines That Make Lines Move"
- Star Wars Official Poster Monthly 15: "'Empire' Latest!"
- Star Wars Official Poster Monthly 16: "Fan Club Facts"
- Star Wars Official Poster Monthly 17: "Introducing the Intergalactic Inker...Russ Manning"
- Star Wars Official Poster Monthly 18: "The Empire Gets Closer"