Carles Sudrià is Professor of Economic History at the Universitat de Barcelona. He has published widely on financial history and the history of energy in Spain, and contributed to journals such as Business History, Financial History Review, European Review of Economic History and Revista de Historia Económica.Yolanda Blasco-Martel is Associate Professor of Economic History at the Universitat de Barcelona. She has published on financial history, social history and business networks in Spain, and contributed to journals such as Business History, Atlantic Studies, Investigaciones de Historia Económica and Revista de Historia Industrial.