Bluegrass Association of Southern California

Bluegrass Music Society of the Central Coast

California Bluegrass Association

International Bluegrass Music Association

Northern Nevada Bluegrass Association

Oregon Bluegrass Association

Redwood Bluegrass Associates (defunct, but still has an info page)

San Diego Bluegrass Society

Santa Clara Valley Fiddlers Association

Music Stores that offer bluegrass instruments and instruction:

Fifth String, Berkeley

Gryphon Stringed Instruments, Palo Alto

Sylvan Music, Santa Cruz

Thin Man String Co., Alameda

Bluegrass News Sites

Bluegrass Today