Historical Statistics of the United States 
Over 37,000 historical data series covering population, the economy, social conditions, health, and governance of the U.S. 
Years of Coverage: 18th-20th centuries    Search this in GALILEO

Business Cycle Indicators 
Extensive time series for U.S. economic indicators 
Years of Coverage: Varies, earliest 1945    Search this in GALILEO

LexisNexis Statistical 
Indexes statistical publications of U.S. and state government agencies and commercial publishers.. 
Years of Coverage: Varies, earliest 1973 Search this in GALILEO