John May was credited as a contributing editor for issues 2 through 15 of the Star Wars Official Poster Monthly magazine, and as editor for issues 16 through 18. He may have been a contributing editor for the first issue as well.

He also wrote several articles for the magazine:

• 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"