The Santa Fe 1846 district encompasses the area documented in Lt J F Gilmer's 1846 survey, one of the earliest detailed American military maps of the city. This district also includes the region depicted in the earliest known map of Santa Fe, the 1766 Plano de la Villa de Santa Fe drawn by Joseph de Urrutia, which recorded the town's principal buildings, roads and acequias. Together, these maps trace the continuity of Santa Fe's urban form from its mid-18th-century Spanish layout to its mid-19th-century American occupation. - AsNotedIn