In 1982 The American Association of Electronic Voice Phenomena (AA-EVP) was founded by Sarah Estep. The AA-EVP organization was founded to standardize and educate EVP collection procedures and also to increase public awareness of this phenomena. Sarah Estep claimed to have captured several hundred EVP messages from deceased friends, relatives and other persons.
Sarah Estep’s work has been continued and expanded on by Tom and Lisa Butler of ATransC (Association of trans communications), which is also committed to the continuation of education and public awareness and in my opinion is the premier organization for information on this subject.
