I am a long term member of the Butte Folk Music Society.
We host monthly jams, an annual camp-out and up to a
dozen concerts each year in coffee shops, performance
halls and houses. We are a non-profit agency, and our
board of directors meets monthly. www.bfms.freeservers.com
(we have a similar URL to the Baltimore Folk Music Society
and have proposed that we become "sister" organizations:
BFMS EAST and WEST) We are centered in Chico, California,
and have occasional newsletters, a web site calendar and
weekly e-mail announcements about area events and performances.

The Folk Alliance is a well-established organization whose
goal is to provide a supporting and connecting structure
to allow grops such as ours to network. They hold regional
and national gatherings that showcase artists, labels, and
organizations involved in recording, promoting, and performing
folk music and dance. http://www.folkalliance.org/
(no need to re-invent the wheel, just hop on board!)