Kâtip Çelebi, Mustafa bin Abdullah, Haji Khalifa or Kalfa, (1609, Istanbul – 1657 Istanbul) was an Ottoman scholar. A historian and geographer, he is regarded as one of the most productive authors of non-religious scientific literature in the 17th century Ottoman Empire. Mughal Library https://www.mughallibrary.com/ebooks2020/Cihannuma-by-Katip-%C3%87elebi