Drawn by Clare Briggs -- who produced one of the first (if not the first) newspaper comic strips -- the advertisements are usually about a wife who forgets to buy Old Gold cigarettes. Her husband is forced to smoke ANOTHER brand of cigarettes while doing some important piece of work (talk on the radio, give a speech), and he ends up coughing all the way through.
The strips always end with somebody saying that Old Golds have "not a cough in a carload," which is not the world's best punchline, believe me.
Here's a slightly different take on the gag, featuring "Frank and Earnest" (not to be confused with the comic strip from the '7os), "direct from the Gus Sun Time" (a vaudeville circuit). I suspect that Frank and Earnest actually existed -- because of their fleshed-out style and the weird note at the end -- but I can't find anything about them online. Either way I hope their routines were better than this.
"Got a new pair of shoes today, Frank...how do they look?"The cartoon ends with this comment: "Note: The boys like their vegetables FRESH."
"Immense Earnest, absolutely immense!"
"Maybe you can tell me who wears the biggest hat in the army?"
"A cinch, Earnest, a cinch...the guy with the biggest head."
"You're so smart, can you tell me why an Old Gold cigarette is like a hot dog?"
"Because you can't get a bark out of either of them."
"Give the boy credit for a hit. But now get set for a fast one."
"Shoot Earnest shoot."
"Then tell me why Old Gold Cigarettes are like a carload of hams."
"Earnest, THERE'S one that stops the old riddle king. Infrorm me."
"Because they're smoked ALL OVER!"