Antique Tribal Art Dealers Association

The Antique Tribal Art Dealers Association (ATADA), was founded in 1988, by a group of independent antique tribal art dealers to form a professional association of dealers that would provide education for the public and set standards for the trade. They recognized that tribal and ethnographic art had reached a level of specialization found in other art fields and were concerned by the volume of misidentified and pastiche materials on the market.

Source: Wikipedia — Antique Tribal Art Dealers Association (CC BY-SA 4.0)