Colonial youth, 1915-1938
Pan-African student activist in the United States, 1939-1947
An independent nationalist base: the African academy in West Africa, 1948-1949
The academy in Nigeria: educational and nationalist issues, 1949-1951
Nationalist and legislator, 1951-1953
Colonial cabinet minister, 1954-1958
Rupture and reconciliation: Mbadiwe and Azikiwe, 1955-1960
At the center of the storm: a struggle for unity and greatness in a fragile Nigeria, 1961-1966
The civil war: mediator and fundraiser, 1967-1970
Elder politician and statesman, 1970-1990.