Herbert S. Klein is Gouverneur Morris Professor Emeritus of History at Columbia University, the former director of the Center of Latin American Studies and Professor of History, Stanford University. Specializing in the social, demographic, and economic history of Latin America, he has published over thirty books and 190 articles in several languages.
Francisco Vidal Luna is Professor of Economics in the Faculty of Economics and Administration (FEA) at the Universidade de São Paulo. He served as Secretary of Planning in the state government of São Paulo. He is co-author (with Herbert S. Klein) of numerous books on Brazil and has published over thirty-five articles in English and Portuguese.