Published by Brill as part of the "Numen Book Series Studies in the History of Religions: Texts and Sources in the History of Religions," volume 122. Order a copy from brill.com. Preview it at google.com. Also available as a Word document.

See also Habibullah Afnan's Memories of the Bab, Bahá'u'lláh and Abdu'l-Bahá: Autobiography of Mírzá Habíbu’lláh Afnán, and a shorter version of this history, The Báb in Shiraz: An Account by Mírzá Habíbu'lláh Afnán.