I had somehow managed not to post links here to the excellent work of Cat Chapin-Bishop and Peter Bishop. Let me remedy that.
A Pagan's Queries
Resources, including lists of articles about Quaker Paganism and Quaker Universalism
Quaker Pagan Reflections: Welcome to the online journal of a pair of Quaker Pagans
One of the really nice things about Cat and Peter's work is that it comes from an explicitly Pagan Quaker/Quaker Pagan perspective.