Ding Dong School - NBC pre-schoolers series of early 1950s
Quite charming to watch. I approve.
I uploaded an episode to the Internet Archive:
http://www.archive.org/details/dingdongschool
If you don't like that site, it can also be seen on YouTube. Also, there is another episode on YouTube, which was uploaded, I think, by a guy named Ira Gallen who collects old TV kinescope film reels (my copy of an episode is a DVD-R copy I bought from a website, which shall remain nameless...though I can say that it wasn't Ira's site)
I hope there is a parallel universe with a music group called "Sand, Wind and Fire"