Margarita Jara, Ph.D. (2006), University of Pittsburgh, is Associate Professor at the University of Nevada, Las Vegas. She has published a monograph and several articles on variation and change, language contact, and language ideologies in Peruvian Amazonian and Limeño Spanish.Roberto Zariquiey, Ph.D. (2011). Pontificia Universidad Católica del Perú, is Associate Professor of Linguistics at that University and Director of the Masters Program in Linguistics. He has published books and papers on Amazonian languages, including A Grammar of Kakataibo (Mouton de Gruyter 2018).Pilar Valenzuela Ph.D. (2003), University of Oregon, is Professor at Chapman University in California. She has published monographs and articles (Panoan and Kawapanan languages, Peruvian Amazonian Spanish), worked in language documentation and revitalization, and authored pedagogical materials for indigenous schoolteachers.Anna María Escobar, Ph.D. (1986), University at Buffalo-SUNY, Professor Emerita, University of Illinois at Urbana-Champaign. Publications include writings on the sociolinguistics, contact phenomena, and grammaticalization processes in Spanish-Quechua contact, and The Handbook of Contact Linguistics, coedited with Salikoko Mufwene (forthcoming).