Radio, Superman: Clan of the Fiery Cross (1946)

Four hours of audio, one quarter of that is advisement for Kellogg's Pep Cereal and Grow-Pup dog food.
The entire story takes place over 16 episodes, each with two or three or one thousand advisement breaks.
With cereal receipts like The Pep Pyramid. There were two others but I don't remember them, and I care not to listen a second time to find out what they were. I am thoroughly sick of Pep Cereal adds.