O thou my dear son! Thy letter, dated July 3, 1913, was received. Its contents... This covenant is the Covenant of His Holiness Baha'o'llah. Now its importance is not known befittingly
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