All the usual suspects during that time period like Sesame Street, Mr. Rodgers and the Electric Company. Some other shows too, 3-2-1 Contact, Big Blue Marble, etc. This was all that PBS stuff.
Since I lived near Canada, I could also get all the Canadian children's programing as well. (Polka Dot Door, etc.)
Sort of weird though since on Sundays, if you were watching at a certain time, everything would be in French and other times it would be in Spanish! I guess there was sort of bilingual deal set up with the PBS station.
And of course a long list of all those Saturday morning cartoons and afternoon cartoons on the other stations.