USGS DRGs of 60 minute by 30 minute topographic quadrangle maps were obtained on CD. Image parts were extracted and re-assembled to create county-wide images.The county-wide images were georeferenced to base data in coordinate system NAD83 NJ State Plane feet.Additional processing details can be found in the metadata for the county-wide files, published by the NJGS:http://www.state.nj.us/dep/njgs/geodata/dgs98-7md.txt
County-wide DRG files were processed to remove no-data areas, then processed to JPEG2000 using GeoExpress. Date of processing uncertain.
The JPEG images were reprocessed using LizardTech GEOEXPRESS 8.5 to create MrSID MG4 format. These images were indexed to create a WMS using Lizardtech Express Server.