A.P. Aldrich, a key South Carolina legislator was one...
But here is a link for you.
http://www.gutenberg.org/files/17724/17724-8.txt
Do a "Find On This Page" for 'George Lowell Austin'
You should find
"THE CONSPIRACY OF 1860-61.
By George Lowell Austin."
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and read on!
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Another site
http://www.sc.edu/library/socar/uscs/2001/meet01.html
Has more views, although I don't believe everything here.
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David Upton