International Primate Protection League
The International Primate Protection League (IPPL) is a not-for-profit animal welfare organization founded in 1973 in Thailand by Shirley McGreal. IPPL's main focus is to promote the conservation and protection around the world of all non-human primates (NHP), including apes, monkeys, and lemurs.
Source: Wikipedia — International Primate Protection League (CC BY-SA 4.0)