Earlier I mentioned I was putting a significant Universalist polity document online -- seeing as it is my day off -- and what I have online.
See http://universalistchurch.net/universalist-history/1891-universalist-general-convention-governance/ [2009. Moved from original posting. URL correct.]
I'll finish it when I have a chance, but the "Laws of Organization" piece alone will give you a good insight into how the Universalist General Convention worked.