Navel Helicopter Association (NHA) was founded in 1971 and is incorporated in California as a 501(c)6 nonprofit professional organization to promote the development and use of naval vertical lift aircraft in the United States Navy, Marine Corps and Coast Guard: NavalHelicopterAssn.org

Blog of Tamas Szorad, Hungarian aviation journalist and photographer
(In Hungarian, Google translator works) http://airbase.blog.hu/

A good source for Naval history and data:
http://www.hazegray.org

A site dedicated to the AWs of today and the history of the rate:
http://www.tourohio.com/fleetaw