The Daftar Khana, meaning 'record room', is at the southern end of the former Daulat Khana area of Fatehpur Sikri. It is a small room with a large window open to the edge of the ridge.
Sources:
Rizvi, Saiyid Athar Abbas. Fathpur-Sikri. Bombay: D. B. Taraporevala Sons, 1975.
Asher, Catherine. The New Cambridge History of India: Architecture of Mughal India, 62. Cambridge: Cambridge University Press, 1992.