- 1927: An introduction to the study of the relations of Indian States with the Government of India
- 1929: The Evolution of British Policy towards Indian States, 1774–1858
- 1929: Malabar and the Portuguese: being a history of the relations of the Portuguese with Malabar from 1500 to 1663
- 1931: Malabar and the Dutch: Being the History of the Fall of the Nayar Power in Malabar
- 1934: The New Empire: Letters to a Conservative Member of Parliament on the Future of England and India
- 1936: The Indian Princes in Council: a record of the chancellorship of His Highness, the Maharaja of Patiala, 1926–1931 and 1933–1936
- 1944: The Strategic Problems of the Indian Ocean
- 1945: India and the Indian Ocean: an essay on the influence of sea power on Indian history
- 1945: The Basis of An Indo-British Treaty
- 1953: Asia and Western Dominance: a survey of the Vasco Da Gama epoch of Asian history, 1498–1945
- 1965: Lectures on India’s Contact with the World in the pre-British Period
Indian Society for Legal Research 