So far, all I've got online is the original charter, dated September 30, 1907, that organized the group. Even at this early moment, it is clear the group had two agendas: Alexander Graham Bell's interest in his tetrahedral kites, and everyone else's interest in building an aeroplane.
Related material can also be found in The Curtiss Aviation Book.
I'm trying to get a hold of their Bulletin, but access is rather difficult, and I don't know much about the copyright status of this material.