Tim Bobko was an illustrator for many of West End Games' Star Wars roleplaying sourcebooks.
- Alien Encounters
- Alliance Intelligence Reports
- Classic Campaigns
- Creatures of the Galaxy
- Cynabar's Fantastic Technology: Droids
- The DarkStryder Campaign
- Galaxy Guide 6: Tramp Freighters, Second Edition
- Galladinium's Fantastic Technology
- Gundark's Fantastic Technology: Personal Gear
- Hideouts & Strongholds
- Imperial Double-Cross
- Imperial Sourcebook, Second Edition
- Lords of the Expanse
- Platt's Smugglers Guide
- Player's Guide to Tapani
- Rules of Engagement
- Shadows of the Empire Sourcebook
- Star Wars Adventure Journal 2
- Star Wars Adventure Journal 4
- Star Wars Adventure Journal 6
- Star Wars Adventure Journal 12
- Star Wars Adventure Journal 13
- Star Wars Adventure Journal 14
- Star Wars Adventure Journal 15
- Star Wars: The Roleplaying Game, Second Edition, Revised and Expanded
- Star Wars Trilogy Sourcebook, Special Edition
- Stock Ships
- Tales of the Jedi Companion
- The Thrawn Trilogy Sourcebook
- The Truce at Bakura Sourcebook
- Wretched Hives of Scum & Villainy