Attention people who obsess over the Flintstones celebrating Christmas: they celebrate Easter, too! You know, death of Jesus, long after the Stone Age, that sort of thing? Hurry! Complain all over the internet about it!
The Easter cartoon is in the Flintstones weekend newspaper comic of March 26, 1967. The anonymous writer makes an Easter Bunny/Playboy bunny reference as his end gag. As you can see below, Fred is wearing a secret agent hat while “Pops” looks like a leprechaun with beard.
You can the rest of the month’s half-pagers below. One story features a tramp (Mel Blanc voice, perhaps?) and another with a door-to-door salesmen (I hear Howie Morris). The March 5th comic has Gene Hazelton experimenting with no backgrounds, similar in a way to coloured cards in medium shots of Hanna-Barbera characters in the early animated cartoons.
My thanks again to Richard Holliss for supplying these from his archive.
March 5, 1967.
March 12, 1967.
March 19, 1967.
March 26, 1967.