O thou who art advancing into the Kingdom of God! Verily, I read thy eloquent letter... Know verily that Abdu'l-Baha has spiritual speech, heavenly conversations
SW.Star of the West, 25 vols. (1910-1935). Periodical issued each Bahá’í month. Vols. 1-12 reprinted 1978 in 8 volumes by George Ronald. Each issue Includes a section in Persian. https://bahai.works/Star_of_the_West