Before cigarettes were found to be linked to cancer, cigarette commercials were very common in the 1940s thru 1970s. Even children were allowed to see these commercials. I remember buying cartons of cigarettes as gifts for relatives, thinking I wasn't doing them harm. Even I smoked for a short time. You could easily buy them in the cigarette machines they had by the gumball machines. The networks would even use cartoons and celebrities to promote their brand of cigarettes. There were even a few ones advertising doctors smoking their favorite brand, Camel. I had to laugh at that one.
Here is one of the Flinstones advertising Winston Cigarettes.
Here is a rare commercial of The Beatles in a cigarette ad
This one is a riot. Imagine Doctors endorsing cigarettes. This was true.