Michael Marten is listed as a contributing editor for the Star Wars Official Poster Monthly magazine from issue 2 through 18; it's possible he also served in this role for the inaugural issue.
Furthermore, under the name Dr. M. F. Marten, he contributed the following articles to specific issues:
- Star Wars Official Poster Monthly 2: "Tatooine: Desert Planet at the Galactic Frontier"
- Star Wars Official Poster Monthly 3: "Robotics: From Artoo to Quasars"
- Star Wars Official Poster Monthly 5: "The Threepio File"
- Star Wars Official Poster Monthly 6: "An Alien Universe"
- Star Wars Official Poster Monthly 8: "The Ins and Outs of Space Travel"
- Star Wars Official Poster Monthly 9: "The Brain of the 'Droid"
- Star Wars Official Poster Monthly 10: "What It Takes to be a Space Pilot"
- Star Wars Official Poster Monthly 11: "Hyperspace!"
- Star Wars Official Poster Monthly 12: "The Cantina Aliens"
- Star Wars Official Poster Monthly 13: "P. S. Ellenshaw and the Magic of Matte"
- Star Wars Official Poster Monthly 14: "War in Space—Fact and Fiction"
- Star Wars Official Poster Monthly 15: "Bleep-Bleep!—The Search For Extra-Terrestrial Intelligence"
- Star Wars Official Poster Monthly 16: "Activate Memory Circuits—It's the Star Wars Quiz"
- Star Wars Official Poster Monthly 17: "Near Encounter With an Alien Body"
- Star Wars Official Poster Monthly 18: "Joe Johnston—The Sketch Book Wizard"