The grids for this map in various formats are available from the data directory as mag5040.***
U.S. Department of the Interior | U.S. Geological Survey URL: <http://pubs.usgs.gov/of/2000/ofr-00-0198/html/wy_5040.htm> Questions or Assistance: GS Pubs Web Contact Page Last Modified: Wed May 10 12:17 EST 2000