Before CBS Storybreak and the CBS Schoolbreak Special, the network had experimented with a mid-week series of specials to rival the ABC Afterschool Special and NBC's Special Treat.
The CBS Library existed for 4 years (1979-83), before giving way to Schoolbreak. Like the Afterschool Special, this Library had a mix of live-action and animated entries. Unfortunately, not much else is known about this series. I never got to see it, so there isn't going to be a rating this time.