Writer
Deep Space Nine Trials and Tribble-ations (TV adaptions by Pocket Books) 1
Star Trek - Deep Space Nine (TV) (NBC) 164 , 167, 171, 174

Writer
The Original Series (Novels by Pocket Books) 47

Feature
A Marvel Comics Super Special 17

Writer
Starfleet Corps of Engineers (ebooks) 14
Star Trek: Early Voyages 1 - 17
Star Trek Special Vol. 2 (DC) 1
Star Trek: The Next Generation: Riker 1
Star Trek Unlimited 1 - 9
Star Trek: Voyager 9
Star Wars Tales (Dark Horse) 5 - 6, 22

Colors
Star Trek Special Vol. 2 (DC) 1

Pencil
Star Trek Special Vol. 2 (DC) 1

Inker
Star Trek Special Vol. 2 (DC) 1

Cover
Star Wars: Empire (Dark Horse) 26 - 28

Pencil
Star Wars: Chewbacca (Dark Horse) 3
Star Wars Tales (Dark Horse) 1

Inker
Star Wars: Chewbacca (Dark Horse) 3
Star Wars Tales (Dark Horse) 1

Writer
Star Trek (Bantam) 6

Colors
Star Trek Vol. 1 (DC) 37

Writer
Battlestar Galactica TV Series (Universal) 206 - 207

Writer
Star Trek: Deep Space Nine - The Celebrity Series: Rules of Diplomacy (Malibu) 1

Writer
Devil world (Bantam) 1
The starless world (Bantam) 1

Inker
Star Trek Vol. 2 (DC) 71

Pencil
Star Trek: Deep Space Nine (Malibu) 14 - 15

Letters
Star Trek: Deep Space Nine (Malibu) 14 - 15

Cover
Star Trek: Deep Space Nine (Malibu) 5

Writer
Star Wars Tales (Dark Horse) 14

Letters
Star Trek Annuals Vol. 2 (DC) 6
Star Trek: Deep Space Nine 5 - 15
Star Trek: Deep Space Nine Next Generation (DC) 1 - 2
Star Trek: Operation Assimilation 1
Star Trek Special Vol. 1 (DC) 2
Star Trek: The Next Generation: Riker 1
Star Trek The next generation Annual (DC) 6
Star Trek The next generation: Ill wind (DC) 1 , 3
Star Trek The next generation Vol. 2 (DC) 71 - 75, 77 - 80
Star Trek: Untold Voyages 1 - 5
Star Trek: Voyager 1 - 15
Star Trek: Voyager: Splashdown 1 - 4

Colors
Star Trek Special Vol. 1 (DC) 2

Inker
Star Trek Unlimited 8

Writer
Fotonovels (Bantam) 1
Star Trek (Bantam) 2

Inker
Star Trek: Deep Space Nine (Malibu) 18

Pencil
Star Wars: Crimson Empire II (Dark Horse) 5 - 6

Inker
Star Trek: All of me (DC) 1
Star Wars: Crimson Empire II (Dark Horse) 1 - 4
Star Wars Tales (Dark Horse) 12 , 15

Cover
Star Trek: All of me (DC) 1

Inker
Star Trek: Deep Space Nine (Malibu) 16

Writer
Gene Roddenberry - The myth and the man behind Star Trek (?) 1

Writer
Star Wars Weekly UK 109

Writer
Star Wars Tales (Dark Horse) 10 - 11

Inker
Star Wars (Dark Horse) 4 - 6, 17 - 18
Star Wars: Boba Fett - Twin engines of destruction (Dark Horse) 1
Star Wars: Chewbacca (Dark Horse) 3
Star Wars: Prelude to Rebellion (Dark Horse) 6
Star Wars: Rogue Squadron - The Warrior Princess (Dark Horse) 1 - 4
Star Wars Tales (Dark Horse) 2
Star Wars: Tales of the Jedi - Dark Lords of the Sith (Dark Horse) 2 - 6
Star Wars: Tales of the Jedi - The Sith War (Dark Horse) 1 - 2
X-Wing Rogue Squadron (Dark Horse) 7 , 9 - 16, 21 - 24, 34 - 35
Star Wars: X-Wing Rogue Squadron - In the Empire's service 1 - 4

Writer
Star Trek - Deep Space Nine Companion (Pocket Books) 1

Writer
The new voyages (Bantam) 1

Pencil
X-Wing Rogue Squadron (Dark Horse) 8 , 17 - 20
Star Wars X-Wing: Rogue Squadron - Requiem for a Rogue (Dark Horse) 1

Inker
X-Wing Rogue Squadron (Dark Horse) 8 , 17 - 20
Star Wars X-Wing: Rogue Squadron - Requiem for a Rogue (Dark Horse) 1

Cover
Star Wars: X-Wing - Rogue Leader (Dark Horse) 1 - 3

Writer
Star Trek (Bantam) 5

Pencil
Star Trek: The Ashes of Eden (DC ? ) 1
Star Trek: Deep Space Nine Worf Special (Malibu) 1
Star Trek: Operation Assimilation 1
Star Trek Special Vol. 1 (DC) 3
Star Trek The next generation: Shadowheart (DC) 1 - 4
Star Trek The next generation Special (DC) 2
Star Trek Vol. 2 (DC) 79

Feature
A Marvel Comics Super Special 4

Cover
Star Wars Weekly UK 4

Inker
Star Trek Movie Specials (DC) 1

Writer
A Marvel Comics Super Special 29
Sergio Aragonés Stomps Star Wars (Dark Horse) 1
Star Wars Tales (Dark Horse) 4 , 6

Cover
Classic Star Wars (Dark Horse) 19

Colors
Star Wars: Chewbacca (Dark Horse) 1

Pencil
Star Wars: Mara Jade - By the Emperor's hand (Dark Horse) 1 - 6

Inker
Star Wars: Mara Jade - By the Emperor's hand (Dark Horse) 1 - 6