Intelligence Report on Obaku, Obeagu, Ugbo, Abudu and Amaowelli Villages of Awgu Division of Onitsha Province (1934) by P. P. Grey, Assistant District Officer Añadir al portapapeles
Intelligence Report on Ofemili Group of Awka Division, Onitsha Province (1934) by P. P. Grey, Assistant District Officer Añadir al portapapeles
Intelligence Report on Ogboli Group of Nsukka Division, Onitsha Province (1933) by W. R. T. Milne, Assistant District Officer Añadir al portapapeles
Intelligence Report on Ogoja Provincial Intelligence Reports (1927) Abakaliki Division, Ogoja Province, by R. J. H. Sasse, Assistant District Officeri Añadir al portapapeles
Intelligence Report on Okeodan, Ilaro, Ilobi, Ajilete, Ilashe of Ilaro Division, Abeokuta Province (1935) by J. H. Ellis, Assistant District Officer Añadir al portapapeles
Intelligence Report on Okpe Clan, Warri Province (1932) by D. F. Stanfield, Cadet Añadir al portapapeles
Intelligence Report on Okposi Clan, Afikpo Division, Ogoja Province (1933) by H. Waddington, District Officert Añadir al portapapeles
Intelligence Report on Okpoto and Mtezi Clans of Abakaliki Division, Ogoja Province (1935) by A. E. Cook, District Officer Añadir al portapapeles
Intelligence Report on Okpuje, Edem and Orobo Villages of Nsukka Division, Onitsha Province (1934) by W. R. T. Milne, Assistant District Officer Añadir al portapapeles
Intelligence Report on Oniong and Nung Ndem Clans, Eket Division, Calabar Province (1932) by D. A. F. Shute, District Officer Añadir al portapapeles