16 sources
The Avengers (vol. 1) #102 (Aug. 1972): "What To Do Till The Sentinels Come!"Captain America (vol. 1) #152 (Aug. 1972): "Terror in the Night!"Combat Kelly and the Deadly Dozen #2 (Aug. 1972): "Lonely Are the Brave"Conan the Barbarian (vol. 1) #17 (Aug. 1972): "The Gods of Bal-Sagoth"Daredevil (vol. 1) #90 (Aug. 1972): "The Sinister Secret of Project Four!"The Defenders (vol. 1) #1 (Aug. 1972): "I Slay By the Stars!"Fear #9 (Aug. 1972): "The Greatest Magician of All"Hero for Hire #2 (Aug. 1972): "Vengeance is Mine!"The Incredible Hulk (vol. 2) #154 (Aug. 1972): "Hell is a Very Small Hulk!"Justice League of America (vol. 1) #100 (Aug. 1972): "The Unknown Soldier of Victory!"Marvel Spotlight (vol. 1) #5 (Aug. 1972): "Origin of the Ghost Rider"Sgt. Fury and His Howling Commandos (vol. 1) #101 (Aug. 1972): "The Origin of the Howlers!"Sub-Mariner (vol. 1) #52 (Aug. 1972): "Atomic Samurai"Thor (vol. 1) #202 (Aug. 1972): "--And None Dare Stand 'Gainst Ego-Prime!"Warlock (vol. 1) #1 (Aug. 1972): "The Day of the Prophet"X-Men (vol. 1) #77 (Aug. 1972): "When Titans Clash!"