The USCensus1990raw data set was obtained from the (U.S. Department of Commerce) Census Bureau website using the Data Extraction System. This system can be found at http://www.census.gov/DES/www/des.html.
The USCensus1990raw data set contain a one percent sample of the Public Use Microdata Samples (PUMS) person records drawn from the full 1990 census sample (all fifty states and the District of Columbia but not including "PUMA Cross State Lines One Percent Persons Records").
Information files:Data files: