By Jeanette Arnquist
Tucson is in the North, that is the northern part of the Sonoran Desert, about 60 miles north of the border with Mexico. Tucson has been continuously inhabited for over 4,000 years. Jesuit Father Eusebio Kino established Mission San Xavier del Bac in about 1700, just South of Tucson among the Tohono O’Odhom people.