Charles H. Harris III, professor emeritus of history at New Mexico State University, Las Cruces. He has written co-authored ten books, including The Texas Rangers and the Mexican Revolution: The Bloodiest Decade, 1910-1920; The Secret War in El Paso: Mexican Revolutionary Intrigue, 1906-1920; The Plan de San Diego: Tejano Rebellion, Mexican Intrigue; The Archaeologist was a Spy: Sylvanus G. Morley and the Office of Naval Intelligence; and The Great Call-Up: The Guard, the Border, and the Mexican Revolution.