"San Xavier Del Bac Mission". National Historic Landmark summary listing. National Park Service. Archived from the original on December 28, 2008. Retrieved June 15, 2008.
"San Xavier del Bac Mission". National Historic Landmark summary listing. National Park Service. Archived from the original on July 28, 2007. Retrieved September 27, 2007..
"San Xavier Del Bac Mission". National Historic Landmark summary listing. National Park Service. Archived from the original on December 28, 2008. Retrieved June 15, 2008.
"San Xavier del Bac Mission". National Historic Landmark summary listing. National Park Service. Archived from the original on July 28, 2007. Retrieved September 27, 2007..