- black and white photographs taken by W.G Archer, 1946-1948
- typescript tour diary of W.G. Archer, S.D.O. Mokokchung 1947
- typescript tour diary of W.G. Archer, S.D.O. Mokokchung 1947
- manuscript notes made by W.G. Archer between 1946 & 1948, and miscellaneous papers and letters
- typescript 'Journey to Nagaland', by Mildred Archer. An account of six months spent in the Naga Hills in 1947
- manuscript - 'Diary of a Tour in the Naga Hills, 1922-1923' by Henry Balfour