Baron Rosen's Babi/Baha'i archives presents private letters and diplomatic correspondence from the nineteenth century, preserved among the prominent Russian scholar Baron Victor Rosen's materials in the Archive of the Russian Academy of Sciences, St. Petersburg branch. The materials cast light on the first studies of the Babi and Baha'i Faiths, new religious phenomena which, in Baron Rosen's time, were emerging in Persia. Iran has always...