PHOTOGRAPHVIEW ALL

The wartime problem of making sharp, clear pictures from a vibrating, speeding airplane ten to twenty thousand feet in the air had brought me to a new kind of technical interest in photography completely different from the pictorial interest I had had as a boy in Milwaukee and as a young man in the Photo-Secession days. Now I wanted to know all that could be expected from photography.
—Edward Steichen, 1963[1]
The introduction of airplanes as a tool for warfare in World War I led to the first organized use of photography for aerial reconnaissance. Until that point, the best aerial photographs had been taken from tethered balloons—a technology that had not changed since Nadar’s first exposures above Paris in the 1860s. The position from this vantage point was so unstable for the long exposures necessary that it was often more efficient to employ draftsmen to sketch the views below. But by the eve of World War I, a photographer leaning precariously over the side of a fixed-wing airplane, pointing his camera downward, could capture a clear view.
By the time the United States entered the war, in April 1917, both the British and French had established photographic divisions to provide daily intelligence. At first the planes were used primarily for reconnaissance, but by the end of the war they were bristling with weapons and aerial photography had become an accurate, specialized means of mapping the landscape. In 1918 Edward Steichen was appointed chief of the Photographic Section of the Air Service, American Expeditionary Forces (AEF), a newly formed division of the Allied forces, in which he oversaw the work of hundreds of photographers. He established fully operational base laboratories for the production of enlarged prints for offensive planning and for training and didactic purposes; these labs could also make copies of the assemblages of prints composed to map larger plots. Steichen’s technical experience and his zeal for the medium catalyzed the swift development of the field, leading to the production of automatic cameras that carried 100 pounds (45.4 kilograms) of 18 by 24 centimeter (7 1/8 by 9 7/16 inch) glass-plate negatives fitted into shock-absorbing carriages.[2] Field officers received instruction in annotating and reading the aerial photographs. Steichen himself commented that “the average vertical aerial photographic print is upon first acquaintance as uninteresting and unimpressive a picture as can be imagined. Without considerable experience and study it is more difficult to read than a map, for it badly represents nature from an angle we do not know.”[3]
This photograph, with its ink inscription and north-pointing arrow, was taken near the end of the war, at the Western Front—the trenched zone in France and Flanders, where the Allied armies battled Germany. Exposed in a De Ram automatic camera, the image captures the moment aerial bombs bypassed antiaircraft fire from troops below. For all its straightforward purpose and informational density, in its minimalism and quasi-abstraction the image manifests surprising parallels with contemporary trends in artistic circles.
—Lee Ann Daffner and Audrey Sands
[2] James B. Campbell, “Origins of Aerial Photographic Interpretation, U.S. Army, 1916 to 1918,” Harpers Pictorial Library of the World War (January 2008): 82.
[3] Edward Steichen. “American Aerial Photography at the Front” (June 1919), reprinted as “Snapshots from the Sky: The Interesting and Vital Work of Photographing the Enemy’s Activities from a Fast-Moving Airplane,” Harpers Pictorial Library of the World War, vol. 8 (New York: Harper, 1920), p. 226.
This work was determined to be a gelatin silver print via X-ray fluorescence (XRF) spectrometry.
The following elements have been positively identified in the work, through XRF readings taken from its recto and verso (or from the mount, where the verso was not accessible):
The graphs below show XRF spectra for three areas on the print: two of the recto—from areas of maximum and minimum image density (Dmax and Dmin)—and one of the verso or mount. The background spectrum represents the contribution of the XRF instrument itself. The first graph shows elements identified through the presence of their characteristic peaks in the lower energy range (0 to 8 keV). The second graph shows elements identified through the presence of their characteristic peaks in the higher energy range (8 to 40 keV).