RENE; Red Eagle News Exchange.
It's THE publication to have if you collect Rugers,, want to know about Rugers,, or just want to study Rugers. When you subscribe,, you get a quarterly newsletter,, (that's worth the price of the subscription,) AND all new subscribers get the Ruger Reference Guide. Simply put,, it's invaluable. Not totally correct,, but as correct as anything out there can be.
Subscribe by contacting chet15 here. He's the owner/editor. $25 a year.