When I was a kid growing up in rural Grinnell, we could receive 7 TV channels--incl WHO (ch. 13 from Des Moines), WMT (ch. 2 from Cedar Rapids--now called KGAN), and WOI (ch. 5 from Ames).
Each of the above had their own kids' show--WHO had "The Floppy Show" with Duane Ellett, WMT had "The Dr. Max Show", and WOI had "The Magic Window" with Betty Lou Varnum.
(We could also receive KCCI--ch. 8 from Des Moines--which had their own kids' show, "Dolph's Cartoon Corner" with Dolph Pulliam, but I didn't care for that show.)
Below are some links & videos for you all to enjoy! I haven't been able to find any vids of "The Magic Window" yet, but there are some "Tales Of The Riverbank" posted below.
Here are some links to sites & pgs re: "The Floppy Show" & the other shows, with pix & mp3s:
Wikipedia pg for "The Floppy Show"
The First Floppy Show Page
Wikipedia pg for "The Magic Window"
For The Children
Hi There, Boys and Girls!: America's Local Children's TV Shows