Description: Papers of Douglas S. Butterworth, Ph.D. '69, Senior Research Associate in Anthropology, collected in support of his research regarding Mexican-Americans and the Lower Rio Grand Valley (LRGV) of Texas (TX). The collection consists of federal state, and local government documents, correspondence, newspaper clippings, theses, bibliographies, photographs, manuscripts and catalogs. Topics addressed concern the LRGV and Mexican-Americans, socio-economic conditions, history, natural resources, emigration, migrant workers, illegal aliens, legal problems, census statistics, health and natural disasters. The papers include publications by Butterworth and documents written by other scholars.