Well I did a little digging, contacted WIPB in Muncie about season 1. Here's the Email I received in response and as such am following up with the indicated PBS station involved.
Thanks for contacting WIPB. The first season of THE JOY OF PAINTING was taped at Falls Church, VA. You might contact Blue Ridge PBS at www.blueridgepbs.org. Series 1 was the pilot and shown only to chosen stations to see if they would be interested in carrying the series. WIPB didn't begin producing shows until season 2.
Ball State University
Muncie, IN 47306