36 sources
Batman (vol. 1) #298 (Apr. 1978): "The Case of the Crimson Coffin!"Black Lightning (vol. 1) #8 (Apr. 1978): "Deadly Aftermath"
Captain AmericaConan the Barbarian (vol. 1) #85 (Apr. 1978): "Of Swordsmen and Sorcerers!"DC Special SeriesThe Defenders (vol. 1) #58 (Apr. 1978): "Xenogenesis Day of the Demons, Part 1: Agents of Fortune"Devil Dinosaur #1 (Apr. 1978): "Devil Dinosaur and Moon-Boy"Fantastic Four (vol. 1) #193 (Apr. 1978): "Day of the Death-Demon!"Firestorm (vol. 1) #2 (Apr. 1978): "Danger Doubled is Death!"Ghost Rider (vol. 2) #29 (Apr. 1978): "Deadly Pawn!"Green Lantern (vol. 2) #103 (Apr. 1978): "Earth - Asylum for an Alien"The Human Fly #8 (Apr. 1978): "The Tiger and the Fly!"The Incredible Hulk (vol. 2) #222 (Apr. 1978): "Feeding Billy"The Invaders (vol. 1) #27 (Apr. 1978): "Agent Axis, Master of Murder"Iron Man (vol. 1) #109 (Apr. 1978): "Moonrise!"Justice League of America (vol. 1) #153 (Apr. 1978): "Earth's First and Last Super-Hero!"Machine Man (vol. 1) #1 (Apr. 1978): "Machine Man"Marvel Premiere #41 (Apr. 1978): "The Dying Sun!"Marvel Team-Up (vol. 1) #68 (Apr. 1978): "The Measure of a Man!"Marvel Two-in-One (vol. 1) #38 (Apr. 1978): "Thing Behind Prison Bars"Ms. Marvel (vol. 1) #16 (Apr. 1978): "The Deep Deadly Silence!"The New Gods (vol. 1) #17 (Apr. 1978): "The Memory Machine"Peter Parker, The Spectacular Spider-Man #17 (Apr. 1978): "Whatever Happened to the Iceman?"Power Man and Iron Fist (vol. 1) #50 (Apr. 1978): "Freedom!"The Rampaging HulkSpider-Woman (vol. 1) #1 (Apr. 1978): "...A Future Uncertain!"Thor (vol. 1) #270 (Apr. 1978): "Minute of Madness -- Dark Day of Doom!"X-Men (vol. 1) #110 (Apr. 1978): "The "X"-Sanction!"