JLA by Morrison Reading Order

[BOOK I : New World Order]

• JLA #1 - "Them!"
• JLA #2 - "The Day the Earth Stood Still"
• JLA #3 - "War of the Worlds"
• JLA #4 - "Invaders From Mars"
• JLA Secret Files And Origins #1- "Star Seed"

[BOOK II : American Dreams]

• JLA #5 - "Woman of Tomorrow"
• JLA #6 - "Fire in the Sky"
  
• JLA #7 - "Heaven on Earth"
• JLA #8 - "Imaginary Stories"
• JLA #9 - "Elseworlds"
• JLA/WildCATS - "Crime Machine"

[BOOK III : Rock of Ages]

• JLA #10 - "Genesis and Revelations"
• JLA #11 - "Hostile Takeover"
• JLA #12 - "Wonderworld"
• JLA #13 - "Wasteland"
• JLA #14 - "Twilight of the Gods"
• JLA #15 - "Stone of Destiny"

[BOOK IV : Strength In Numbers]

• JLA Secret Files #2 - "Heroes"
  
• New Year’s Evil: Prometheus #1 - "There Was A Crooked Man"
• JLA #16 - "Camelot"
• JLA #17 - "Prometheus Unbound"
• New Gods Secret Files And Origins - "Orion And Big Barda Join The JLA"
• JLA #22 - "It"
• JLA #23 - "Conquerors"

DC One Million

• Chronos #1,000,000 - "Time on My Hands"

DC One Million #1 - "Riders on the Storm"

• Action Comics #1,000,000 - "Brave New Hero"
• Shadow of the Bat #1,000,000 - "A Never-Ending Story"
• Nightwing #1,000,000 - "The Anachronism"
• Green Lantern #1,000,000 - "Star Crossed"
• Power of Shazam! #1,000,000 - "Between the Rock & A Hot Place"

DC One Million #2 - "The Day After Tomorrow"

• Batman #1,000,000 - "Peril Within the Prison Planet"
• Superman: Man of Steel #1,000,000 - "Fear & Loathing"
• Starman #1,000,000 - "All The Starlight Shining"
• Impulse #1,000,000 - "Desperate Times - A Million"
• Green Arrow #1,000,000 - "All Down The Years"
• Superman #1,000,000 - "Down To Earth"
• Detective Comics #1,000,000 - "The Bug That Ate Tomorrow"
• JLA #1,000,000 - "Prisoners of the Twentieth Century"
• Aquaman #1,000,000 - "The Banks & Shoals of Time"
• Chase #1,000,000 - "Don't Believe It!"

DC One Million #3 - "Solaris Rising"

• Martian Manhunter #1,000,000 - "The Abyss of Time"
• The Adventures of Superman #1,000,000 - "Keepers of Solitude"
• Resurrection Man #1,000,000 - "A Handful of Dust"
• Catwoman #1,000,000 - "Nine Million Lives"
• Robin #1,000,000 - "Dark Planet"
• Flash #1,000,000 - "Fast Forward"
• Superman: Man of Tomorrow #1,000,000 - "Future Story"

DC One Million #4 - "Death Star"

• Young Heroes In Love #1,000,000 - "Happiness Is A Warm Nanite"
• Hitman #1,000,000 - "To Hell With The Future"
• JLA In Crisis Secret Files
• "The Flash's Infinite Crises"
• "A Tour Through the One Million Universe!"
• DC One Million 80 Page Giant
• "System's Finest"
• "Tales of the Legion of Executive Familiars"
• "The Divided Self"
• "Head Games"
• "Deep Cover"
• "Day in the Lives"
• "Crisis One Million"
• JLA 80pg Giant #2 - "Tour of Duty"
• JLA Secret Files & Origins #3 - "Things To Come"
• Legionnaires #1,000,000 - "Come Together"
• Legion of Superheroes #1,000,000 - "1,000 Years Later..."

[BOOK V : Justice For All]

• JLA #24 - "Executive Action"
• JLA #25 - "Scorched Earth"
• JLA #26 - "Our Army at War"
• JLA #28
• "The Wise Men of Bahdnisia"
• "Mile High Graffiti"
• "J.J.'s Big Secret"
• "Bad Luck Billy Mac"
• JLA #29 - "World Turned Upside Down"
• JLA #30 - "Worlds Beyond"
• JLA #31 - "Gods & Masters"

[BOOK VI : World War III]

• JLA #34 - "The Ant & the Avalanche"
• JLA #36 - "Goodbye JLA"
• JLA #37 - "Injustice Strikes"
• JLA #38 - "I Know You"
• JLA #39 - "Apocalypse Architect"
• JLA #40 - "The Abyss Gazes Also"
• JLA #41 - "Maggedon!"

JLA Earth 2

Green Lantern by Grant Morrison Reading Order

Season One

Knight of Light

• The Green Lantern #1 - "Intergalactic Lawman"
• The Green Lantern #2 - "Darkness Visible"
• The Green Lantern #3 - "Slave Lords of the Stars"

Queen of Night

• The Green Lantern #4 - "Cosmic Vampire's Beautiful Daughter"
• The Green Lantern #5 - "Blackstar at Zenith"
• The Green Lantern #6 - "Under Strange Skies"

Hard Traveling Hero

• The Green Lantern #7 - "Emerald Sands"
• The Green Lantern #8 - "Space Junkies"
• The Green Lantern Annual #1 - "The Wireless Ones"

Cosmic Cataclysm

• The Green Lantern #9 - "Day the Stars Fell Down"
• The Green Lantern #10 - "Guardians of the Multiverse"
• The Green Lantern #11 - "Quest for the Cosmic Grail" {"Unknown Worlds"}
• The Green Lantern #12 - "Return of the Qwa-Man"

Blackstars

Bane of the Blackstars

• Blackstars #1 - "Under the Sun at Midnight" {"Hands Up-Who Wants to Party?"}
• Blackstars #2 - "A Hole in the Sky" {"Hands Up-Who Wants to Rule the Universe?"}
• Blackstars #3 - "Heart of Emptiness" {"Hands Up-Who Wants to Die?"}

Season Two

New Order of the Infant Oans

• The Green Lantern: S2 #1 - "Young Guardians"
• The Green Lantern: S2 #2 - "The Cosmidor Conspiracy"
• The Green Lantern: S2 #3 - "Thunder on Wonder Mountain"

Light's Out for Hal Jordan

• The Green Lantern: S2 #4 - "Golden Giants of Neo-Pangea"
• The Green Lantern: S2 #5 - "Hyperman: Wanted Dead or Alive"
• The Green Lantern: S2 #6 - "Assault on Sector General!"

Lanterns In Limbo

• The Green Lantern: S2 #7 - "Ultrawarrior" {"Megamortals!"}
• The Green Lantern: S2 #8 - "War with the Anti-World"
• The Green Lantern: S2 #9 - "The Wedding of the Trillenium!"
• The Green Lantern: S2 #10 - "Multi-Crisis on Intimate Earths!"

Beware My Power

• The Green Lantern: S2 #11 - "Contest of Crowns"
• The Green Lantern: S2 #12 - "The Intelligence Engine"