Alot of the Paramount cartoons made under Culhane reflected the 1960s counter-culture movement in some ways. To give an example, one of the Honey Halfwitch cartoons made under his reign featured Honey and Cousin Maggie having to disguise themselves as humans so they can go to the city and have their magic broom repaired. They do so by dressing up as hippies!
Then there's this: A Bridge Grows in Brooklyn (1967). A construction worker that keeps getting distracted by a flower and falls in love with it? Yep, it's a 1960s cartoon alright.
And it's one of my favorites.
It was directed by Chuck Harriton, who has his own directorial quirks. Cartoons by him tend to have faster-pacing, giving energy to the otherwise limited animation. Doug Crane and Nick Tafuri did a wonderful job animating under his direction.
Sorry about the video quality. This was captured from my 16mm print being projected on the wall.