With thanks to Mark Hooker, I have discovered the St. Petersburg Tolkien Society, and begun adding them to the Guide database. They publish "Palantir", a fanzine in Russian, but already I have found some treasures in their back issues (all of which are available online in PDF format) such as a good scan of a handwritten Tolkien letter.

I hope someone besides me finds these useful. And if anyone reading has any information on their prior fanzine the "Prancing Pony" I would appreciate any leads. Thanks!

St. Petersburg Tolkien Society page on TCG

Palantir page on TCG

Society website