National Geographic : 1944 Sep
How We Fight with Photographs 273 "Here Are the Latest Shots of That Jap Bomber Base, Captain." A messenger, armed with a pistol, hands a batch of freshly developed aerial photographs to the photo inter preter who will scrutinize them for Jap planes, guns, workshops, fuel tanks, ammunition dumps, etc. U. S. Army Signal Corps. Official With a Stereoscope He Finds Bombing Targets on Photographs of Munda Point Here the photo-interpretation officer, stripped to the waist in the tropical heat, studies the aerial pictures of Japanese-held territory to locate targets. Viewed through the stereoscope, objects appear in three dimen sions, with height and depth, making it easier to identify them (page 271).