*I say "every" because Marvel says "every", but there are a few that won't be showing up, such as Tobey Maguire and Andrew Garfield.
Today's entry is Spider-Man (1967).
Spider-Man is the first animated Spider-Man series, most famous for its theme song ("Spider-Man, Spider-Man, does whatever a spider can..."). It's also known for the poor production values and limited animation that plagued animated series of the time. It ran for three seasons, and while the first was pretty faithful to the comics, the second two did away with Spider-Man villains and had him fight generic monsters to re-use animation from Ralph Bakshi's Rocket Robin Hood series.
The Spider-Man from this world first appears in a cameo in Amazing Spider-Man #9 (October 2014)...
...and the world itself first appears briefly in Amazing Spider-Man #11 (December 2014), which makes note of the simple animation style:
In addition to mentioning criminal copycat Charles Cameo (whose first appearance was in the episode "Double Identity", 1967), we also see the show's versions of Electro and Vulture: