Intelligence Report on Nsungli Area of Bamenda Division, Cameroon Province (1935) by F. W. Carpenter, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Nsukwa Native Court Area ( Comprising the Village Groups of Ashama, Adonta, Aba, Ewuru, Egbudu, Akan, Ijemma-Unor, Ijemma-Aniogo, Ishiago, Nsukwa and Ukwu) Asaba Division, Benin Province (1935) by F. M. Woodhouse, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Ogoni Tribe, Opobo Division, Calabar Province (1932) by E. J. Gibbon's, Cadet Adicionar à área de transferência
Intelligence Report on Ogula Clan of Western Ijaw Sub- Tribe, Forcados District, Warri Province (1930) by R. J. Hook, D. F. C., District Officer Adicionar à área de transferência
Intelligence Report on Ogwashi- Uku Clan of Asaba Division, Benin Province (1936) by J. E. Hill, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Ohafia Clan of Bende Division, Owerri Province (1933) by C. J. Mayne, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Ohodo, Ozalla, Lejja, Ede, Opi and Akwegbe Villages of Nsukka Division, Onitsha Province (1934) by J. Barmby, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Okpanku, Abboh, Uduma and Mpu Groups of Awgu Division, Onitsha Province (1934) by O. P. Gunning, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Oku Clan, Uyi District, Calabar Province (1932) by S. L. Knight, Assistant District Officer Adicionar à área de transferência
Intelligence Report on Olomoro Village Group, Ghose Clan, Ase District, Warri Province (1931) by E. R. Chadwick, Assistant District Officer Adicionar à área de transferência