Though seemingly fragile, adobe is in fact a strong and durable building material; its integrity and reliability increase greatly with proper maintenance. As this photo shows, despite being captured on film more than 130 years after its circa-1800 construction, the unprotected adobe walls of the Tumacacori mission near Tubac, Arizona, appear to be remarkably intact. | Date: 1937 | Source: Historic American Buildings Survey, Library of Congress | Rights: Library of CongressDownload Original File
