Category Archives: Yuma County

San Ysidro Ranch Ruins

Listed on the National Register of Historic Places since 1975, the San Ysidro Hacienda was the home of Jose Maria Redondo, an early Arizona pioneer. The ranch once contained over 2,000 acres, but subsequent to the death of Redondo in 1878, his family could not make a claim to more than 160 under American homestead laws; not enough land to support the hacienda’s extensive agricultural operations and it quickly fell into ruin.

The site once contained the adobe ruins of the main ranch house, a two-story mill, and rubble mounds; the original headquarters included a cane mill, numerous storehouses, workhouses, stables, carriage house, and harness house; and houses for approximately a hundred laborers’ families built outside walled the headquarters. Named for the patron saint of agriculture, it was the first large non-Indian irrigated farm in Arizona with twenty-seven miles of canals and ditches bringing water from Gila River. While the National Register nomination kept the location of the ruins secret, recent urban development has encroached on the site and the ruins are now at risk. The property is currently owned by the Archaeological Conservancy, who are powerless to protect it.

September 2007 Update:

[For more information, contact the Archaeological Conservancy at 505-266-540. Photo source: Lorraine LeRoy Merkel.]

Peter T. Robertson Residence

A 1905 brick cottage with Neo-Classical influence listed on the National Register of Historic Places. Peter T. Robinson was a prominent local attorney, active in community affairs. The house is vacant and is regularly broken into. The roof is open to the sky, the floor is caving in, and a small fire destroyed the east portico and some of the roof over the kitchen. (Photo source: Vince Murray.)

August 2007 Update: Site visit underway to determine status.