Flintstones Cigarette Ad (1960)

Barney: "I hate to see [our wives] work so hard." Fred: "Yeah, me too. Let's go around back, where we can't see them."

The Flintstones premiered on September 30, 1960, at 8:30 pm Eastern time, and quickly became a hit. The first two seasons were co-sponsored by Winston cigarettes and the characters appeared in several black-and-white television commercials for Winston (dictated by the custom, at that time, that the star(s) of a TV series often "pitched" their sponsor's product in an "integrated commercial" at the end of the episode).

During the third season, Hanna and Barbera decided that Fred and Wilma should have a baby. Originally, Hanna and Barbera intended for the Flintstone family to have a boy, but the head of the marketing department convinced them to change it to a girl since "girl dolls sell a lot better than boy dolls". Around this time, Winston pulled out their sponsorship and Welch's (grape juice and grape jellies) became the primary sponsor, as the show's audience began to shift younger. ~ Wikipedia