The Holowan Laboratories was a laboratory complex owned and operated by the company of the same name.
- Galaxy Guide 3: The Empire Strikes Back
- The Movie Trilogy Sourcebook
- The Essential Guide to Characters
- Galaxy Guide 3: The Empire Strikes Back, Second Edition
- Cynabar's Fantastic Technology: Droids
- Star Wars Trilogy Sourcebook, Special Edition
- Star Wars Annual 1998
- The Essential Guide to Droids
- The New Essential Guide to Characters
- The New Essential Guide to Droids
- Top Trumps: Star Wars
- The Complete Star Wars Encyclopedia
- Rebellion Era Campaign Guide
- The Essential Reader's Companion