David S. Parker is associate professor of history and former Chair of the History Department at Queen's University, Canada. He is author of The Idea of the Middle Class: White-Collar Workers and Peruvian Society, 1900-1950 (1998), and articles or book chapters on topics ranging from public health reform to images of social climbers in Chilean fiction to dueling among journalists and politicians in Uruguay.

Louise E. Walker is assistant professor of history at Northeastern University in Boston. She is the author of Waking from the Dream: Mexico's Middle Classes after 1968 (2012). She is currently coediting a special dossier on Mexico's recently declassified secret police archive for the Journal of Iberian and Latin American Research (2013, with Tanalís Padilla). Her research projects also include the history of conspiracy theories.