Mysticism in the 21st Century, 2nd Edition, by Prof. Dr. Connell Monette includes a long and detailed chapter on the Ecclesia Gnostica Aeterna.
Highly recommended if you are looking for further information!
You can get your copy here: Mysticism in the 21st Century at Barnes and Noble or at Amazon (make sure it is the 2nd Edition though!).
Various publications by EGAe members for the public are in preparation.
Videos:
“Sorcerous Gnosis of the Living All” – Recording of Hierophant David Beth’s talk at the 3rd Western Mystery Conference, Austin, Texas, Oct. 2014. Artwork (c) by Jon Witzky.