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1. Digital Orthophoto Quadrangle (DOQ) Data: Illinois, 1998 - 2001

1998. U.S. Geological Survey. This is a collection of tile-by-tile NAPP-III DOQs (1998-2001) images in MrSID format for the state of Illinois, in UTM Zones 15 and 16, NAD83. Ort...

2. WISCLAND Land Cover: Wisconsin, 1998 (Grid)

1998. Wisconsin Department of Natural Resources. This Grid-format data set, known as WISCLAND Land Cover, is a raster representation of land cover of Wisconsin derived from Landsat satellite image...