53 sources
Adam Strange (vol. 1) #2 (Apr. 1990): "The Man of Two Worlds, Chapter 2"The Adventures of Bayou Billy #4 (Apr. 1990): "Billy's Night Out"Alpha Flight (vol. 1) #83 (Apr. 1990): "Talisman (The Second)"The Amazing Spider-Man (vol. 1) #331 (Apr. 1990): "The Death Standard"
Avengers SpotlightBatman (vol. 1) #446 (Apr. 1990): "When the Earth Dies, Chapter Two: Underworlds"Betty's DiaryCaptain AmericaCritical MassDaredevil (vol. 1) #279 (Apr. 1990): "Before the Flame"Doctor Strange, Sorcerer SupremeDoom Patrol (vol. 2) #31 (Apr. 1990): "The Word Made Flash"Excalibur (vol. 1) #21 (Apr. 1990): "The Cross-Time Caper Part Nine: Crusader X"Firestorm (vol. 2) #96 (Apr. 1990): "Land of Peril"Flaming Carrot ComicsThe Incredible Hulk (vol. 2) #368 (Apr. 1990): "Natural Selection"The Inhumans Special #1 (Apr. 1990): "Remembrances of Revolutions Past"Iron Man (vol. 1) #255 (Apr. 1990): "Switching Channels"Justice League America #37 (Apr. 1990): "Furballs!"Legion of Super-Heroes (vol. 4) #6 (Apr. 1990): "The Last Days of Daxam"Marc Spector: Moon Knight #13 (Apr. 1990): "Brush Fire"Marvel FanfareMarvel Graphic Novel #61 (Apr. 1990): "Black Widow: The Coldest War"Namor, the Sub-Mariner #1 (Apr. 1990): "Purpose!"The New Mutants (vol. 1) #88 (Apr. 1990): "The Great Escape"Nick Fury, Agent of SHIELD (vol. 3) #10 (Apr. 1990): "A Matter of Faith"Power Pack (vol. 1) #55 (Apr. 1990): "Mysterio!"The Punisher (vol. 2) #32 (Apr. 1990): "Speedy Solutions"The Punisher War JournalQuasar #9 (Apr. 1990): "Have Brain Will Travel"The Sensational She-Hulk #14 (Apr. 1990): "A Baloney Place of Dying!"The Silver Surfer (vol. 3) #36 (Apr. 1990): "The Lesson"Starman (vol. 1) #21 (Apr. 1990): "Things Fall Apart"Suicide Squad (vol. 1) #40 (Apr. 1990): "The Phoenix Gambit, Part One: Ashes"Superboy (vol. 2) #3 (Apr. 1990): "Forever is a Lot Longer Than You Think!"ThorThe Uncanny X-Men (vol. 1) #260 (Apr. 1990): "Star 90"Wolverine (vol. 2) #23 (Apr. 1990): "Endings"X-Factor (vol. 1) #53 (Apr. 1990): "Ghosts"