There's a guy uploading some old races on Youtube that are pretty cool to watch. I've got a collection of Runoffs races going to some degree, but nothing this old. I've subscribed to his channel to see what else he may post.
1980 Formula Ford at Road Atlanta
https://youtu.be/pURtJfInH8I
1980 Formula Vee at Road Atlanta
https://youtu.be/U2YYbJ9e9VY
1980 Formula Atlantic at Road Atlanta
https://youtu.be/rYnu8P0HR50
1988 Barber Saab Pro Series at Limerock
https://youtu.be/4GxiknAv7ok