First Edition. Paul Wenck dustjacket art. Adventure novel set in Middle East among the Rif tribes. "Here these people are despisers of Christians and teachers of the Koran.... the unconquered of all the Riffian Tribes." This copy inscribed and signed by the author, a famed Harvard race anthropologist. Near Fine with small gift inscription on title page in Very Good dustjacket with shallow chipping to spine ends and modest soiling to panels.