Does GSO have a newsletter?

We publish 3 newsletters. You can read current and past issues on this website and subscribe on their individual pages.
Box 4-5-9: GSO’s quarterly newsletter.
About A.A: Newsletter for professionals who work with alcoholics.
Sharing from Behind the Walls: Excerpts from letters sent by people in custody to GSO.

The GSO Archives newsletter Markings has been discontinued, but past issues are available to read.