It’s an old Duke University video..its has to be seen to be believed. True nightmare fuel. Fantastically you can find it on amazon. It would make an epic riff.

https://www.amazon.com/gp/product/B00018D4J0?SubscriptionId=0QCHRJVSKG6F3BRGBNG2&tag=pbs_00099-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00018D4J0