Toys, pendants, games, and other non print memorabilia from vintage media are becoming more scarce each passing year. I may be wrong, but print items seem to be much easier to come by. One unexpected recent find was a "Petticoat Junction" coloring book from Whitman. No one considers Petticoat Junction a children's classic, and that makes this product interesting.
An image search would show that there were also coloring books for "The Beverly Hillbillies", "The Munsters", "Get Smart", and that is just the 1960s. There were coloring books for celebrities in the Golden Age of Radio like Eve Arden, and movie stars like Esther Williams.
Vintage coloring books are interesting and over looked time capsules of how media for all ages was promoted to kids.
After finding a Petticoat Junction coloring book, I am wondering what radio or TV program didn't have a coloring book.