New York & Boston: Little Brown, (2004). First edition - After surviving a shipwreck off the coast of Africa in 1815, Captain James Riley and his crew were captured by desert nomads and sold into slavery, and eventually dragged on an incredible journey through the heart of the Saharan desert. Illustrated with maps at the head of each chapter and small photographs. Includes an appendix on the publication of Riley's original account, a glossary of Arabic terms, notes and index. Maps. xi, 336 pp.

Dobbs Ferry, New York: Oceana Publications, 1967. First edition - A look at the African empires of Ghana, Mali and Songhai., and also of the 'highways' provided by the Niger River and the Sahara Desert. Maps, glossary, bibliography, index. Cover by Nigerian artist Solomon Irein Wangboje. 86 pp.