Diccionario de autoridades, tomo primero (Real Academia Española, Madrid, 1726)

The first dictionary of Spanish to prove every word with a quotation from a named book, begun by an academy founded in 1713 and printed at the king's expense. Its list of vouching authors is where the American connection is visible: Acosta on the Indies is the second entry in the whole list, beside Bernal Díaz, Oviedo, Ovalle's Chile and a nautical manual printed at Mexico. Its limit is visible on the same sheets — "aguacate" in 1726 means an inferior emerald.