Here is a clear, straightforward and easily readable account of the life of Baha'u'llah, the Founder of the Baha'i Faith.  

Day of Glory begins with the childhood of Baha'u'llah and His early years in His native land of Persia.  A sequel to Hour of the Dawn. The Life of the Bab, the book looks briefly at the same period as its companion volume but focusing on the Person of Baha'u'llah.  Here we see Him as the exemplary disciple of the Bab, thrown into the Black Pit of Tihran where He received intimation that He was the Promised One of all ages.  Baha'u'llah was banished from Persia. We follow Him on His journeys from Tihran to Baghdad, to Constantinople, to Adrianople and finally to Akka ...