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Scope and Contents This document is comprised of narratives from two expeditions undertaken from 1765 to 1767 by Juan María Antonio Rivera in search of silver along the route which, over a half-century later, became known as the Old Spanish Trail. Rivera's account contains detailed environmental information (regarding the fauna along the route as well as the conditions of roads), the ethnic groups populating the region through which he passes, as well as population statistics, including those for specific pueblos...