Irving A. Leonard is Professor Emeritus of Romance Languages and Hispanic American History at the University of Michigan and the author of many works on colonial Spanish America. Rolena Adorno is Professor of Romance Languages and Literatures at Princeton University. She is the author of "Guaman Poma: Writing and Resistance in Colonial Peru (1986) and co-editor of "Transatlantic Encounters: Europeans and Andeans in the Sixteenth Century (California, 1991).