Sound Art Recordings - Acoustic Mandolin music by Butch Baldassari and others.

Mandolin Cafe - All things mandolin - discussion board, builders listings, tablatures, etc.

Guild of American Luthiers - Stringed instrument makers guild.

Classical Mandolin Society of America - Organized to nurture the growth and assist those interested in pursuing the art of mandolin playing.

Association of Stringed Instrument Artisans - A trade organization dedicated to the field of stringed instrument making and repair.

Acoustical Society of America - All things acoustical.