38 sources
A-Next #8 (May 1999): "Into the Depths!"The Amazing Spider-Man (vol. 2) #5 (May 1999): "...And Then There Was One!"Anarky (vol. 2) #1 (May 1999): "Aberration Part One: Power Play"Ash: Fire & Crossfire #2 (May 1999)The Authority (vol. 1) #1 (May 1999): "The Circle: Part One"Battle Chasers #5 (May 1999): "Power"Black Panther (vol. 3) #7 (May 1999): "Caged"Captain America (vol. 3) #17 (May 1999): "Exterme Prejudice: A Tale of Morality and Failure"Captain America: Sentinel of Liberty #9 (May 1999): "Back in Black"Catwoman (vol. 2) #68 (May 1999): "Hot in the City"Daredevil (vol. 2) #7 (May 1999): "Guardian Devil, Part 7: The Devil's Demon"Earth X #2 (May 1999): "Chapter Two"Fantastic Four (vol. 3) #17 (May 1999): "Shadow City's Most Wanted!"Gambit (vol. 3) #4 (May 1999): "Old Wounds, Fresh Blood!"Green Lantern (vol. 3) #112 (May 1999): "Standing Tall"Human Target (vol. 1) #2 (May 1999)Inhumans (vol. 2) #7 (May 1999): "Coming Apart at the Seams...(Everything Happens at Once)"Iron Man (vol. 3) #16 (May 1999): "Scale Model"
J2JLA #29 (May 1999): "Crisis Times Five, Part Two: World Turned Upside Down..."Martian Manhunter (vol. 2) #6 (May 1999): "High Crimes and Misdemeanors"Nova (vol. 3) #1 (May 1999): "Starting Over"Planetary #2 (May 1999): "Island"Resurrection Man (vol. 1) #24 (May 1999): "Forgotten But Not Gone"The Sandman Presents: Lucifer #3 (May 1999): "The Morningstar Option, Part 3"Slingers #6 (May 1999): "Truth, Consequences, Dares & Dysfunction"Sniper & Rook #1 (May 1999): "Hunting High and Low"Spider-Girl (vol. 1) #8 (May 1999): "Two of a Kind"Star Wars: Episode I - The Phantom Menace (1999)Thor (vol. 2) #11 (May 1999): "The Dark Wars Part II of III"Thunderbolts (vol. 1) #26 (May 1999): "Lockdown"The Titans (vol. 1) #3 (May 1999): "Shock Value"The Uncanny X-Men (vol. 1) #368 (May 1999): "Mansions in Heaven"Vext #3 (May 1999): "Germ Warfare"Wolverine (vol. 2) #138 (May 1999): "Doomsday!"X-Force (vol. 1) #90 (May 1999): "Rude Awakening"X-Men (vol. 2) #88 (May 1999): "A World Apart"