Flintstones Doing Ad for Winston Cigarettes - 1962
Product placement lacked a certain subtlety, back in the 60s.. this is almost as bad as Master Shake's Boost Mobile sellout:
"In the days when the tobacco industry still could advertise on American radio and TV broadcasts, and advertising on TV had more limitless options, it was common for TV programs on prime-time to feature the cast doing plugs for a specific product that was sponsored that night, and the Flintstones was no exception."