Áqá-Bálá
From Bahaipedia
Áqá-Bálá, sometimes referred to as Áqá-Bálá Bayg (whose real name was Prince Malik Qasim), was a famed Persian artist. He was the chief painter of a governor in Persia and was asked by him to paint the Báb's portrait, which is the only known image of the Báb in existence to this day. The portrait is currently located in the International Archives Building on the Arc, which lies on the slope of Mount Carmel in Haifa, Israel.