It was in the 80's when I got my first look at these kooks as well. They were spewing hatred towards Reagan. I was stunned at their idiocy.
Birchers try to be pretty slick with "name me a document" game. Once enough house flies have landed on a sugar cube, it is time to throw it away.
They had some thoughtful and well laid out works in their publications, but the running crowd was something else...