1. ‘Petition to the Res. Onitsha from Ndiobias’, 21 01 1946.
2. Interview with Benson A. Ugwu, 21 08 1986
3. Interview at Akwuke, Nigeria with Benson A. Ugwu, 21 08 1986.
4. D.O. Enugu to Res. Onitsha, 7 03 1925.
5. D.O. Nkanu to D.O. Enugu, 26 07 1925