The Hunt Commission (1934),
Bridges Committee of Enquiry (1941),
The Tudor Davis Commission (1945),
The Harragin Commission (1946),
The Miller Commission of 1947
The Gorsuch Commission (1955)
Newns Commission, the Elwood Grading Team (1956),
The Mbanefo Commission of 1959,
The Morgan Commission (1963),
The Adebo Commission (1970 – 1971),
Public Service Review Commission (Udoji Report) (1974), and
The Cookey Commission (1981).