US of Archie was the last series featuring Archie Andrews and friends on CBS, and they went out with a bang.
Launched 40 years ago, US of Archie sought to teach as well as entertain, and the episode, "The Star Spangled Banner", is certainly an example. The ancestors of the Riverdale kids, and the audience watching at home, learned about the origins behind Francis Scott Key's classic poem, which was subsequently set to music, and is our National Anthem.
Since Retro left local cable systems last year, I'm not sure if they're still carrying the series. It'd be nice, though, if another network, say, for example, Boomerang, picked it up.
Edit, 10/18/17: The video has been deleted, and the only other YouTube copy doesn't have an embedding code.