On May 29, 2:33 pm, Nyal Williams
wrote:
Who was Siepen?

Not sure. He is not described in the article, and I have never come
across the name anywhere else.

The article was very influential, however. In a different article,
decades later, one of the Schweizers describes its influence:

http://home.comcast.net/~johan.larso...softhesky.html
(Scroll down to the section "Article Launches a Career")

Johan Larson
http://home.comcast.net/~johan.larso...-the-wind.html