Some popular cartoons of the '60's were Spider-Man and the Marvel Superheroes. I remember hating the Marvel cartoons because they were shown as 3-part cartoons, with each one ending in a cliffhanger. It wasn't until youtube that I was FINALLY able to see some of the complete cartoons! :)
Spider-Man was MUCH better than the very limited animation of the Superheroes' cartoons, especially in the first season. Spider-man's second season really suffered when Bakshi had to flee Canada, and they replaced much of the background music with the same music used in the Marvel Superheroes Cartoons.
Here are the banners I made for the Marvel characters. :)