L.M.I. – Luthiers Mercantile International http://www.lmii.com/
G.A.L. – Guild of American Luthiers http://www.luth.org/
ASIA – Association of Stringed Instrument Artisans http://www.asiartisans.org/content/
Stewart-McDonald – Guitar Tools, Parts, Supply http://www.stewmac.com/