Cartoon Brew has scans of a Look Magazine article from January 17, 1939 on how the Hays Code "did its thing" with cartoons.
I laughed out loud when I read this bit: "Robert Taylor may kiss Garbo in a feature picture, but it isn't considered nice for Porky Pig to kiss Petunia Pig in an animated cartoon. Censors prefer romance of the hand holding type."
It Was All One Big Lie
27 minutes ago