1990 census of population and housing: summary population and housing characteristics
U.S. Bureau of the Census
The data from the 1990 census were derived from a limited number of basic questions asked of the entire population and about every housing unit (referred to as the 100-percent questions), and from additional questions asked of a sample of the population and housing units (referred to as the sample questions). ... This report includeds a table finding guide to assist the user in locating those statistical tables that contain the data that are needed.