Such a damn good book.
Good choice. It’s one of my favourites. It’s also the first in a trilogy, the last book of which has just been announced.
All the Loeb/Sale books are worth reading, Batman or otherwise.
Chronology:
Challengers of the Unknown vol. 2 #1–8 (March–Oct. 1991)
Batman: Legends of the Dark Knight Halloween Special #1 (Dec. 1993)
Batman: Madness A Legends of the Dark Knight Halloween Special #1 (1994)
Batman: Ghosts Legends of the Dark Knight Halloween Special #1 (1995)
Wolverine/Gambit: Victims #1–4 (Sept.–Dec. 1995)
Batman: The Long Halloween #1–13 (Dec. 1996–Dec. 1997)
Superman For All Seasons #1–4 (Sept.–Dec. 1998)
Batman: Dark Victory #1–13 (Dec. 1999–Dec. 2000)
Daredevil: Yellow #1–6 (Aug. 2001–Jan. 2002)
Spider-Man: Blue #1–6 (July 2002 – April 2003)
Hulk: Gray #1–6 (Dec. 2003 – April 2004)
Catwoman: When in Rome #1–6 (Nov. 2004–Aug. 2005)
Solo #1 (Dec. 2004)
Captain America: White #0–5 (Sept. 2008–Dec. 2015)
I wanna pick this up myself.