Historic SRS video taken in New York

Video of SRS taken at Mr. Fischer's place at the Kennilworth Riding Club in Rye, New York.
http://youtu.be/5zsWkN90mZY
They are talking about the history behind it on the Ultimate Dressage site:
http://www.ultimatedressage.com/forums/viewtopic.php?f=1&t=209868