These maps of Louisiana are derived from the U.S. Historical County (HUSCO) Boundary files. The HUSCO files are county boundary files for the contiguous United States for each decade from 1790 through 1990 and for 1999. Files include county and state names as well as FIPS identification numbers and county area estimates. For more information about the HUSCO dataset including how to order, click http://www.ga.lsu.edu/husco.html.