The book, "The History of Sudan," by Muhammad al-Fashawi, was published in 1955. It contains numerous references to the reign of Sultan Ismail, the second Sultan of Darfur. The book also mentions the reign of Sultan Ali Dinar, who ruled Darfur from 1898 to 1916. The author, Muhammad al-Fashawi, was a historian and scholar who dedicated his life to studying the history of Sudan. He was also a poet and writer, and his works have been translated into several languages.