Milestones
The first known interracial kiss in mainstream comics (as opposed to underground comix) occurred in Warren's Creepy #43 (Jan. 1972), in "The Men Who Called Him Monster" by writer Don McGregor and artist Luis Garcia. McGregor said in 2001 that the kiss was actually due to the artist misunderstanding the line "This is the clincher" in the script. McGregor would later script color comic books' first known interracial kiss, in the "Killraven: Warrior of the Worlds" feature in Amazing Adventures #31 (July 1975).
Read more about this topic: Warren Publishing