The C. L. Sonnichsen Special Collections Department is located on the sixth floor at the University of Texas at El Paso Library. The book collections include the Chicano Collection, the Judaica Collection, the S. L. A. Marshall Military History Collection, the Southwest and Border Studies Collection, as well as collections of art and rare books. In addition to printed sources, the department has manuscript and archival collections available. There is also an oral history collection documenting the region.
https://www.utep.edu/library/special-collections/
Encyclopedia of Mexico by