Nafees Khan, project manager for African-Origins at Emory University in Atlanta, listens March 2010 to the audio recordings of names found in Courts of Mixed Commission records for Havana and Freetown, Sierra Leone, to identify their likely ethno-linguistic origins. (Associated Press/Emory University)

Photo by: Bryan Meltz

Nafees Khan, project manager for African-Origins at Emory University in Atlanta, listens March 2010 to the audio recordings of names found in Courts of Mixed Commission records for Havana and Freetown, Sierra Leone, to identify their likely ethno-linguistic origins. (Associated Press/Emory University)