An 1893 map of Pima County by George Roskruge including smaller inset maps of Tucson and Nogales - an interesting resource for historic names and locations.
Available in several formats from the Library of Congress:
Official map of Pima County, Arizona
Empirita Ranch - 6/18/2020
Created by Charles Miles on 7/6/2020. Updated on 10/11/2020.