Very scarce work with none in the auction record and none in the trade regarding early missionary efforst among the Mendi [Mende] and Sherbro tribes of Sierra Leone, who were both significant forces in exporting Africans from the remainder of the continent to British and American slave traders. Nearly 100 references to slavery and the trade. 

Flickinger, D. K. and McKee, Wm. Missions of the United Brethren in Christ. History of the Origin, Development and Condition of Missions among the Sherbro and Mendi Tribes in Western Africa. Dayton, Ohio. United Brethren Publishing House. 1885. 329pp.

A very good copy, bound in cloth, spine is a bit sunned. The last signature is shaken, but still generally solid, and pages are generally bright.