NCVS: National Center For voice and speech

http://www.ncvs.org/

pava: Pan american vocology association

http://www.pava-vocology.org/

Nats: national association of teachers of singing

http://www.nats.org/

estill voice international

https://www.estillvoice.com/

​amsat: american society for the alexander technique

http://www.amsatonline.org/

Asha: American speech language hearing association

http://www.asha.org/

asa: acoustical society of america

http://acousticalsociety.org/

complete vocal institute

http://completevocalinstitute.com/

the voice foundation

https://voicefoundation.org/

vocology in practice

http://vocologyinpractice.com/

mcclosky institute of voice

http://www.mcclosky.org/

Voice health institute

http://www.voicehealth.org/

vasta: Voice and speech trainers association

https://www.vasta.org/
APME: ASSOCIATION OF POPULAR MUSIC IN EDUCATION

http://www.popularmusiceducation.org/

ivtom: international voice teachers of mix

http://www.ivtom.org/

airs: advancing interdisciplinary research in singing

http://airsplace.ca/

ceuvoz: centro de estudios para el uso de la voz

http://www.ceuvoz.com.mx/index01.php

nafme: national association for music educators

​http://www.nafme.org/

acda:american choral directors association

http://acda.org/

iva:institute for vocal advancement

https://www.vocaladvancement.com/

pama: performing arts medicine association

http://www.artsmed.org/

the british voice association

http://www.britishvoiceassociation.org.uk/

mtna: Music teachers national association

http://www.mtna.org/

evta: European voice teachers association

http://www.evta-online.eu/

pacific voice & speech foundation

http://www.pvsf.org/
Disclaimer:  We have tried to give credit to all of the images that we've used that are not our own, or believe them to be in public domain. 
If you see something that is yours that you feel is being used without proper permission, please let us know and we will gladly credit you or remove it.  Thanks for your help!