Any Suggestions for Books on African History?

One of my minor goals before I die is to have read at least one book on the history of each country in Africa. I am a long way from achieving that goal, but currently I am working on reading a book on Sudan and one on Libya. The last African theme book I finished reading was on Algeria. Other countries on the completed list are Congo, Ghana, Kenya, South Africa, Rwanda, and Western Sahara. Since I am not a specialist on Africa and the people I work with almost all specialize in Ghana I am taking suggestions here on works that deal with the individual histories of other African states. So if you have any suggestions put them in the comments.