The Sprg2011AerialImagery_6And12in_SPIE is used to display aerial imagery data that requires very limited updates.  Since the data captured within this basemap is static new imagery basemaps should be created in addition to this basemap when flown and data has been delivered. This basemap will not need to be rebuilt, but instead kept as an archived snapshot of Grundy County, Illinois in the Spring of 2011.
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{'Title': '', 'Author': '', 'Comments': '', 'Subject': '', 'Category': '', 'AntialiasingMode': 'Best', 'TextAntialiasingMode': 'None', 'Keywords': 'Grundy County,Illinois,Aerial,Imagery,Raster,Basemap,Cached'}
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