Material Loss Survey over 73 years


This comparison can be used to inspect for material loss on the facade of the Mission San Antonio de Valero (The Alamo) over the course of 73 years from 1936 to 2009.  Click on the images or use the navigation bar below the images to zoom in and out to see specific areas of detail.  To see a clear example of change over time look at the capitol of the top of the column to the right of the door.  Images of any type photographic or other drawing, sketch or image from any time period can be used for this type of comparison.  Any form of time-based or fourth dimension (4D) existing condition inspection or analysis can be completed using this method. 

Left image: Daniel Schwen, 2009 Used by permission under GNU Free Documentation License.

Right image: Arthur W Stewart, 1936 public domain as part of the Historic American Buildings Survey (HABS), taken April 9, 1936.