Black and White aerial photos are a type of remotely-sensed map typically taken by either satellite or airplane. Aerial photos taken in black and white are sensitive to the visible spectrum, much like the human eye. Presented above is a black and white aerial photo taken in 1952 of the Balloon Track Site which at the time was an operating rail yard. The contrasting shades of grey help to emphasize the muck and gravel mess created by rail yard industry in the center of the photograph.
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