Barbara A. Tenenbaum, the first Mexican Specialist in the Hispanic Division of the US Library of Congress, retired in September 2015. She came to the Hispanic Division in 1992. She was editor-in-chief of the Encyclopedia of Latin American History and Culture (5 vols., 1995). During her years in the Hispanic Division, Tenenbaum organized numerous public events, exhibitions, and symposia, many of them in collaboration with the Mexican Cultural Institute of Washington and the Embassy of Mexico. In addition to the encyclopedia, Tenenbaum published Politics and Penury: Debts and Taxes in Mexico 1821–1656 and co-edited (with Vincent C. Peloso) Liberals, Politics, and Power: State Formation in Nineteenth-Century Latin America (University of Georgia Press, 1996; republished 2017). She has presented papers at national and international organizations, including the Conference on Latin American History, the International Congress of Americanists, and many others. Tenenbaum was honored with the Águila Azteca Award by Mexico in 2015, the highest award conferred by that country on foreigners.