One simple solution would be to subscribe to Folkfare, New England's Guide to Folk and Acoustic Music Events. Tom and Kathy Murri publish this handy guide monthly, and it lists performers and where they are playing in the New England states. It also lists by venue, and includes addresses and telephone numbers of more coffee houses, etc., than you ever dreamed existed! To subscribe ($15 per year) write to:

Folkfare
P.O. Box 586
Hadley, MA 01035

Usual disclaimer: I read it, but have no connection with it.

Sandy