Alonso de Molina's Vocabulario en lengua castellana y mexicana (Mexico, 1571)

The two-way Spanish-Nahuatl dictionary printed at Mexico City by Antonio de Spinosa in 1571 — an enlarged second edition of Molina's 1555 vocabulary, with a wholly new Nahuatl-to-Spanish half added. Its alphabet is Nahuatl's, not Castilian's: the letters the language does not use are simply absent from the order. It exists because missionaries had decided they could not do their work through interpreters, and Molina says so on the page.