The above map shows an aerial photo of Delaware, Colorado.
Aerial photographs represent a large and heavily used portion of the Map & Imagery Laboratory's spatial data collection. Aerial photographs exist as positive prints and positive and negative transparencies. Films designed for black and white aerial photo's have a higher contrast than conventional products because the luminance range of the Earth's surface are seen from altitudes of 5000 ft. or more and they are 100 times lower than that of landscapes photographed horizontally.
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