Andres Perez de Ribas, Historia de los triumphos de nuestra santa fee (Madrid, 1645)

The Jesuit provincial's history of the missions of Sinaloa and Sonora, printed at Madrid in 1645. Inside a triumphalist frame it carries field observations of a kind rarely met that early: that the languages of the region share their radical words with Mexican, that peoples came from the north across a narrow arm of sea, that unwritten languages keep uniform rules, and that by 1645 the Indians of Cinaloa were carrying their harvests on horses bought from the Spaniards.