In article ,
says...

Happy April Fools Day!

I hope you guys enjoy this ancient specification writen by someone at my
old employer, a computer manufacturer once upon a time...

https://www.dropbox.com/s/pagmxe035p...ERIES.mht?dl=0

While you're there, this is a circuit I designed back in the early 1960s
for a rather strange purpose. I'd be interested to know if anyone has
seen it before.

https://www.dropbox.com/s/wf5iiujs9h...rator.jpg?dl=0

Mike.