EHRET, Christopher. American, b. 1941. Genres: History, Language/Linguistics. Career: University of California, Los Angeles, associate professor, then professor, 1968-. Publications: Southern Nilotic History: Linguistic Approaches to the Study of the Past, 1971; Ethiopians and East Africans: The Problem of Contacts, 1974; The Historical Reconstruction of Southern Cushitic Phonology and Vocabulary, 1980; (with M. Posnansky) The Archaeological and Linguistic Reconstruction of African History, 1982; Reconstructing Proto-Afroasiatic: Vowels, Tone, Consonants, and Vocabulary, 1995; An African Classical Age, 1998; A HistoricalComparative Reconstruction of Nilo-Saharan, 2001; The Civilizations of Africa: A History to 1800, 2002. Address: Dept. of History, University of California, 405 Hilgard Ave, Los Angeles, CA 90024, U.S.A.