- typescript tour diary of W.G. Archer, S.D.O. Mokokchung 1947
- typescript - J.H. Hutton's tour diary in the Naga Hills
- typescript - J.H. Hutton tour diary in the Naga Hills
- typescript - Tour Diary of Keith Cantlie, 1919-1920
- published - Chapter III 'Detailed Report on the Naga Hills Expedition of 1878-80', Capt. P.J. Maitland
- published - Chapter IV 'Detailed Report on the Naga Hills Expedition of 1878-80', Capt. P.J. Maitland
- published - extracts on Nagas from 'Assam Administration Report'
- published - extracts on Nagas from 'Assam Administration Report'