Well, Hal, I reviewed the materials you referenced on Mr. Blumenfeld's website and it seems to confirm my original comment that I posted elsewhere that JSA seems to have been a short-lived organization.  As I mentioned, the reports I have seen indicated that, at its peak, it may have had around 100 "members" but it welcomed non-Jews and non-JBS people as members so I have no clue how many Jews were actually participants in any serious way.