Orozco y Berra, Geografía de las lenguas y carta etnográfica de México (1864)

The first attempt to map and classify all the languages of Mexico, printed at Mexico City in 1864. Its author states in the introduction that he knows none of the languages he classifies and has proceeded "siguiendo única y exclusivamente la autoridad" — the authority being the grammars written by Spanish missionaries over three centuries. It is therefore a measurement of what that philological corpus made possible, and, in the same pages, of what had already been lost.