Inteligence report on Abayum Clan of Obubra Division, Ogoja Province (1932) by R.N.O Marshall, Assistant District Officer. Añadir al portapapeles
Intelligence report on Abi, Uvuru, Nyibu and Ugbene group of Nsukka Division, Onitsha province (1934) by J. Dixon Assistant district Officer Añadir al portapapeles
Achalla Group of Onitsha division, Onitsha province (1933) by R.T Milne, Assistant District officer Añadir al portapapeles