We are grateful to the many language consultants and teachers who have worked with us over the years without whose knowledge and hard work the project would never have come to be.
Research on language vitality in Ozelonacaxtla was greatly facilitated by the help of Gabriela Román Lobato and her family. Carolina Lobato worked as a field assistant to locate participants for interviews, served as local guide and helped establish contact with La Universidad Intercultural del Estado de Puebla in Huehuetla.
We are also grateful to Marcelino Mendoza Ortega, Rosendo Melo Márquez, Noemi Sampayo Mendoza, Álvaro Barragán Álvarez, Braulio Cevedeo Cristobal, Juan Ramirez Cortez, Doña Rosita Velásquez, José Gaspar Aguilar Martínez, Guadalupe Mendoza Muñoz, and Lucrecia Muñoz Santiago, as well as to the late Luisa Cabrera Vite, the late Luciano Cabrera Trinidad, the late Luciano Romero Aguilar, and the late Manuel Romero Morales, for giving us their time and friendship over the years.