Presidio of San Francisco, Letterman General Hospital, Building No. 27, Letterman Hospital Complex, Edie Road, San Francisco, San Francisco County, CA

Significance: Building 1006 is significant as an element built in harmony with the original 1899 pavilion plan of Letterman Hospital; as one of several Spanish Colonial Revival style buildings at Letterman whose construction resulted in a new image for the hospital; and as an early (1906) example of reinforced concrete construction. Its complex history of use includes serving as the home of the acclaimed Bacteriology Laboratory of Letterman Hospital from 1906 to 1975. The Bacteriological Laboratory played a significant role for Letterman and for the Army during World War I and World War II both as a laboratory and as a training center. In 1940, it became home to the X-Ray Department, subsequently, it played an important role at Letterman in World War II. Building 1006 is a contributing structure to the Presidio of San Francisco's National Historic Landmark District.
Survey number: HABS CA-2633
National Register of Historic Places NRIS Number: 66000232