Grimjack
First Comics (series)/IDW (trades). Written by John Ostrander and drawn by Timothy Truman unless otherwise noted.
Legend of Grimjack 1 (Grimjack stories from Starslayer 10-18).
[From IDW: IDW brings you the entire GrimJack saga, in order, starting
off with the classic stories from First Comics’ Starslayer, issues
10 through 18. Written and drawn by creators John Ostrander and Timothy
Truman, this initial volume concludes with the 28-page crossover with Mike
Grell’s famed swashbuckler, Starslayer. Ostrander and Truman provide
eight entirely new pages, plus unpublished art, bizarrely charming introductions,
and a painted cover from Truman. This is where Cynosure begins!]
Legend of Grimjack 2 (1-7). [From IDW: IDW
continues their re-presentation of the entire GrimJack saga, in order. This
second volume contains the first seven classic issues of First Comics' GrimJack,
written and drawn by creators John Ostrander and Timothy Truman. And as
with every volume, this one will feature additional material in the form
of character sketches, unreleased artwork and more.] 
Legend of Grimjack 3 (8-14). [From
IDW: Where else can you study at the inter-dimensional University of
Cynosure, take a bunch of Uzis to the wild, wild West and get it on with
Major Lash and his Lawkillers? Timothy Truman and John Ostrander proudly
represent issues eight through 14 of GrimJack, the original series, all
under a brand-new hot cover painting from ol' Timbo!] Book of the Week 8/3/05: Grimjack, written by John Ostrander and drawn by Timothy Truman (both too absent from comics in recent years), was a forerunner of the girm and gritty comics that would flood the market a few years later. Set in Cynosure, a city connected to all alternate realities, Grimjack is a private detective (or gun for hire) with a dark past and a disturbing (to him, at least) penchant for doing the right thing. Dark, violent, and witty, on re-reading these collections for the first time in 20 years, I am impressed with how well they hold up. And as always for IDW, the production values are refeence quality. 
Legend of Grimjack 4 (15-21; a Timothy Truman, Tom Sutton, Steve Erwin). [From IDW: IDW continues its re-presentation of the entire First Comics GrimJack saga, in order. This fourth volume delves deeper into what it means to be GrimJack and survive--hell, profit--in the insane city of Cynosure. Written and drawn by creators John Ostrander and Timothy Truman.] 
Legend of Grimjack 5 (22-30; a Timothy Truman, Tom Sutton, Doug McManus, Doug Rice).
Legend of Grimjack 6 (31-37; a Tom Mandrake).
Legend of Grimjack 7 (38-46; a Tom Mandrake).
Legend of Grimjack 8 (47-54; a Tom Mandrake).
Killer Instinct (6-issue mini). [From IDW: The first John Ostrander—Timothy Truman GrimJack story in two decades… now all in one breathtaking volume! See why GrimJack: Killer Instinct has been one of the very best-reviewed sagas of the year! There’s a firefight in The Pit and GrimJack is in the middle of the conflagration. His friends at Cadre have hired a beautiful vampire assassin to take him out. How does GrimJack save his neck—and who winds up in possession of Munden’s Bar, the nexus of all realities?] 
Volume 1 (Back-ups from Grimjack issues between 2 and 22; a John Ostrander, Mike Baron, et al.; a Brian Bolland, Steve Rude, Timothy Truman, Rich Veitch, et al.). [From IDW: Hey, GrimJack fans, Munden's Bar has re-opened for business and you won't believe who's grabbed a stool at the Bar. Mike Baron! Hilary Barta! Steve Bissette! Brian Bolland! Rick Burchett! Del Close! Phil Foglio! William Messner-Loebs! Jerry Ordway! John Ostrander! Steve Rude! Joe Staton! Timothy Truman! Jim Valentino! Rick Veitch! Bob the Watchlizard! And, of course, ol' GrimJack himself! 208 pages of four-color bizarre thrills from the pages of the classic First Comics GrimJack run‹surrounded by an all-new cover by classic underground comix legend Skip Williamson!] 