http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Population of states and counties of the United States: 1790 to 1990
Report provides the total population for each of the nation's 3,141 counties from 1990 back to the first census in which the county appeared.
compiled and edited by Richard L. Forstall.
Not available on computer disk from NTIS as an ASCII text file ; PB96-500525.