The Folklore Society of N.E. Pa (USA) has a singing circle on the first Friday of the month at a members' house. Many use RUS but several do not. For more info see
http://folkloresocietynepa.esmartweb.com/

We also have a Folksong Weekend planned for Labor Day weekend at a camp 50 miles west of Wilkes Barre, Pa. It's a lot of singing circle type activities as well as a few other things. For info use the e-mail on the web page.

TonyK