From the Preface: ‘’These Oracles are attributed to Zoroaster, though to which particular Zoroaster is not known; historians give notices of as many as six different individuals all bearing that name, which was probably the title of the Prince of the Magi, and a generic term’’. Edited and Revised by Sapere Aude (W. Wynn Westcott), with an Introduction by L.O. Published in 1895.
Source : The International Association for the Preservation of Spiritualist and Occult Periodicals (IAPSOP): http://iapsop.com/ssoc/ ; License CC BY-NC-SA 3.0: https://creativecommons.org/licenses/by-nc-sa/3.0/deed.en