Baharistan-i-Ghaibi  The Baharistan-i-Ghaibi (), written by Mirza Nathan, is a 17th-century chronicle on the history of Bengal, Cooch Behar, Assam and Bihar under the reign of Mughal emperor Jahangir (1605-1627). Unlike other history books of the Mughal Empire, written by court historians by order of the emperor and covering the history of the whole empire, the "Baharistan-i-Ghaibi" deals only with the affairs of Bengal and the adjoining area. Alauddin Isfahan, alias Mirza Nathan, was awarded the title of Shitab Khan by Jahangir. His father Malik Ali, later entitled Ihtimam Khan, came to Bengal as Mir Bahr, serving as admiral of the Mughal fleet in 1608 along with Islam Khan Chisti. Serving in the Mughal army in Bengal, he witnessed most of the region's political events and common life, and wrote from personal observation. He took part in battles against Khwaja Usman and Pratapaditya during the viceroyalty of Islam Khan, but during the later period he was engaged in the warfare in Kamarupa. When the prince Shahjahan revolted against his father Jahangir and came to Bengal, Mirza Nathan joined him and helped in his war operations, but when the prince left Bengal for the Deccan, Mirza Nathan went into hiding and was not heard of anymore. Believed to be living a retired life, he adopted the pseudonym of "Ghaibi" ("Invisible"). Mirza Nathan's eyewitness accounts have provided detailed and lucid accounts of the Mughal conquest of Kamarupa, Kachhar and Assam. The accounts of the several Magh invasions of the Mughal territory of Bhulua and the several Mughal invasions to Chittagong are found in greater details in the Bharistan; the Arakanese and the Portuguese sources give only a short account. The "Baharistan-i-Ghaibi" was lost for a long time until its discovery by Sir Jadunath Sarkar in the national library in Paris, France. Sir Jadunath wrote several articles in English and Bengali journals, bringing the manuscript to scholarly attention. The University of Dhaka procured a photograph copy of the book and M. I. Borah, the then professor of Persian, translated it into English.