Sir Rex Niven's book, "Nine Great Africans", published in 1964 by G. Bell and Sons, LTD of London. The nine great Africans are: 1. Arabi the Egyptian 2. Mutesa the Chief 3. Menelik the Emperor 4. Seyyid Said the Sultan 5. Chaka the Soldier 6. Muhammed the Askia 7. Usuman the Preacher 8. Crowther the Bishop 9. Aggrey the Teacher. Excellent historical overviews of each person.