----------------------------Original message---------------------------- In response to Mark Thomas' posting: According to U.S. Geological Survey Water Resources Investigations Report 85-4187, the following Mississippi Counties are included in the Yazoo- Mississippi Delta: Bolivar, Coahoma, DeSoto, Grenada, Holmes, Humphreys, Issaquena, Leflore, Panola, Quitman, Sharkey, Sunflower, Tallahatchie, Tunica, Warren, Washington and Yazoo. This coincides with information I've seen in other sources. Blake Gumprecht Documents Librarian Temple University (215) 204-3187 [log in to unmask]