30 – Philipps, Tracey. The continental-European ethnic and cultural composition of Canada, 1947
31 – Blyth, Aliston. Tedi River tribes, 1922
32 – Browne, Granville St John Orde. Physical peculiarities of the minor tribes of Mount Kenya, British East Africa, 1915
33 – Gibson, Sir Herbert. Notes on the Indian tribes of the Paraguayan and Bolivian Chaco, 1922
34 – Mathew, John. Explanation of some of the Australian class names, 1926
35 – Hodgkin, H. Olaf and others. Malagasy folk-lore
36 – Long, Edward E. The mystery of the Sakai
37 – Blumenbach, Johann Friedrich. XIV observations on some Egyptian mummies opened in London, 1792
38 – Champ, W. Aboriginal vocabulary, 1862
39 – Damant, Guybon Henry. The wild tribes of north eastern India, 1900