At the end of the Third Anglo-Maratha War, Prinsep obtained the permission of the governor-general to write A History of the Political and Military Transactions in India during the Administration of the Marquis of Hastings, i.e. from October 1813 to January 1823.
Prinsep wrote also works on: the origin of Sikh power in the Punjáb (1834); recent discoveries in Afghanistan (1844); social and political conditions of Tibet, Tartary, and Mongolia (1852).