In the early 1990s, one of the more interesting and thought-provoking projects in the SCA was Thinkwell, a newsletter featuring commentary by SCA members on the organization and how to recreate the Middle Ages. It was put together by Sandra Dodd, AElflaed of Duckford, a long-standing peer and former president of the SCA, Inc.
My wife subscribed and we both enjoyed reading it at the time, and were sorry when it stopped publication. Now it's back in an online format with a blog and some of the old issues archived. I recommend it.
Update: I forgot to mention... in fact, I had altogether forgotten until I posted this... that I met Mistress AElflaed in 1990 at a SCA Board of Directors meeting in Cynnabar. I asked her a rather silly question during an intermission, and she gave me a very polite answer.