- Jal M. Cooper. Early India Cancellations. Thacker and Co., Bombay. 1948.
- Batty, Mike.Penny Red Stars Used Abroad. 9th Ed. 2022.
- Akihiko Koiwa exhibit.
- Mukharya, PS. The Revolt of 1857: Saugor and Nerbudda terrirtories p.140 . Sharada Publishing House, New Delhi, 2001.
- About Chin Hills
- Woodburn Kirby, S.The War against Japan Vol.III The Decisive Battles. H.M. Stationery Office, London. 1961.
- About Surendra Nath Karr
- https://indiarevo.inphila.net/history.html
- Bob's article on Zossen
- Mahendra Pratap's article in ASIA
- Morton, L (2016) The Amir, Neutrality and Rumour During the First World War Journal of History and Cultures Vol. 6 p. 1-13
- https://en.wikipedia.org/wiki/Operations_against_the_Mahsuds_(1917)
- Lal, M.Postal History of, Censorship in Baluchistan and North West Frontier Province 1914-1922, Punjab Disturbances Censorship 1919, Censorship during Red Shirts Civil Disobedience Movement 1931-1932. Manohar Lal, New Delhi. 1997
- Proud, E.B. History of the Indian Army Postal Service, Vol. 1., 1854 – 1913. Proud Bailey Co. Ltd. 1992.
- Bayanwala, A.K. Slogans and Special Postmarks of India. Lucky Press, Delhi, 1982.
- Menuz, Wayne (2008). Indian POW Card United Postal Stationery Society. Vol. 50 (6) . Pp 161-162
- Proud, Edward B., Rowell, Milo. The Postal History of The Occupation of Malaya and British Borneo 1941-1945. Postal History Publishing Co., 1992.
- Tett, David. A Postal History of the Prisoners of War and Civilian Internees in East Asia During the Second World War: The Railway, the River and the Bridge: Burma Thailand and Indochina 1942-1946 Vol 3, Stuart Rossiter Trust Fund, 2002-2010, Bristol, 2005.
- Sinha, B.N., Bose, S. Netaji – A Pictorial Biography. Ananda Publishers, 1979.
- Postal Notice dated May 28, 1936
- Gernan Field PO Database
- Morenweiser, Konrad British Empire Civil Censorship Devices WWII The Civil Censorship Study Group. 1997.
- Proud, E.B. History of the Indian Army Postal Service, Vol. 3, 1931-1947. Proud Bailey Co. Ltd. 1992. p.190
- Esposito, V.J. The West Point Atlans of American Wars Vol. II. 1900-1953. Frederick A. Praeger, New York. 1972
- Warren, R., Meech, A. (ed.) The Roberts Papers. The Burma Post Office under Japanese Occupation. Burma Philatelic Study Circle. 2022.
- 17. p. 33
- Adgey-Edgar, W.H. Catalogue of Imperial Japanese Overprints and Issues. Gloucester Printers, 1946.