Ring's reflections: Spanish influence reaches north BEN KIRKBY / ARIZONA DAILY STAR 1998 Mar 28, 2013 Buy Now Spanish authorities assigned Col. Hugo O'Conor to create a line of defense along the colonial frontier. The Tucson presidio was one of those posts. BEN KIRKBY / ARIZONA DAILY STAR 1998 Tags Bob Ring Tucson History As featured on +3 Ring's reflections: Trip reveals S. American wonders Earlier this month, Pat and I returned from our trip of a lifetime - a two-week visit to Sou… +2 Ring's reflections: Spanish influence reaches north 1694 to 1775 Recommended More LATEST LOCAL OFFERS Mike's Drilling LLC Well Dry? Don’t Cry! Mike's Drilling Can Help You Make The Best Decision For Your Health, Home and Wallet! Tucson Surveying & Mapping LLC Building a new facility? Contact Tucson Surveying & Mapping to learn more about Topographic Surveying JD's Auto Glass Windshield chipped? Let JD's Auto Glass help you out, we will even handle the insurance claim. Call us today!