Conan - 2003 - Current
Conan The Legend - 2003
Michael Chabon Presents: The Amazing Adventures of the Escapist
#6 (April 2005)
Al Williamson: Hidden Lands TPB - October 2004
Cap A Univesrse X Special - Feb 2001
Beasts A Universe X Special - June 2001
Universe X TPB - February 2002
Earth X Vol. 3 TPB: Universe X Vol. 2 - June 2002
Earth X Vol. 5 TPB: Paradise X Book 2 - March 2003
Paradise X: Ragnarok
#1-2 - March - April 2003
Zorro: The Dailies - 2001
Dark Horse Presents
#143 (May 1999)
Edgar Rice Burroughs' Tarzan
#1-6 (1996)
#18-20 (1998)
Edgar Rice Burroughs' The Return of Tarzan (1997)
#1-3 (of 3)
Wild Cards
#2 - 1990
Timespirits - 1984-1986
#1-8
Saga of the Swamp Thing
#1-24 - 1982-1984
Detective Comics
#500 - March 1981
Marvel Preview
#15 - 1978 - Feature
Also:
Swamp Thing Vol. 2
New America
Dragonsword
Warlord
Weird War Tales