First edition of Asar-us-Sanadid was appeared in which year?

"Asar-us-Sanadid" (آثارالصنادید) is a historical and archaeological book written by Sir Syed Ahmed Khan. The first edition was published in 1847. This work documented the monuments, historical buildings, and important places of Delhi, and is considered one of the earliest efforts in preserving historical architecture in India. It showcased Sir Syed's deep interest in history, culture, and research—laying the foundation for his later reformist and educational efforts.