Alt Text Map of Missions and Presidios in Primería Alta from 1690 to 1850 in Tumacacori National Historical Park in Arizona. The terrain is tan and the rivers and Gulf of California shown and labeled in blue. Extended Description Represented with solid and outlined brown squares, the missions and presidios are clustered in the right half of the map on both sides of the Arizona, United States and Sonora, Mexico border. Only those in the US are labeled, and most of those are lined up along the Santa Cruz River. From north to south, missions in the US are labeled San Xavier del Bac, Calabazas, Guevavi, and Tumacácori. The presidios are Tucson and Tubac. Fourteen missions and four presidios are marked but not labeled in Mexico. Legend A legend in the lower left corner identifies solid orange squares for Missions and outlined orange squares for presidios.