St. Louis Fed. "ALFRED® allows you to retrieve vintage versions of economic data that were available on specific dates in history... Vintage or real time economic data allows academics to reproduce others' research, build more accurate forecasting models, and analyze economic policy decisions using the data available at the time."
"Issued by the Office of Management and Budget (OMB), the Budget of the United States Government is a collection of documents that contains the budget message of the President, information about the President's budget proposals for a given fiscal year, and other budgetary publications that have been issued throughout the fiscal year."
"...annual series that provides subnational economic data by industry. The series is useful for studying the economic activity of small areas; analyzing economic changes over time; and as a benchmark for statistical series, surveys, and databases between economic censuses. Businesses use the data for analyzing market potential, measuring the effectiveness of sales and advertising programs, setting sales quotas, and developing budgets. Government agencies use the data for administration and planning."
NORC. "...contains a standard ‘core’ of demographic and attitudinal questions, plus topics of special interest. Many of the core questions have been unchanged since 1972 to facilitate time trend studies as well as replication of earlier findings."
University of Michigan. "...longitudinal panel study that surveys a representative sample of approximately 20,000 Americans over the age of 50 every two years. Supported by the National Institute on Aging (NIA U01AG009740) and the Social Security Administration..."
Inter-university Consortium for Political and Social Research. "...data archive of more than 500,000 files of research in the social sciences. It hosts 16 specialized collections of data in education, aging, criminal justice, substance abuse, terrorism, and other fields."
"STATS America is a service of the Indiana Business Research Center at Indiana University's Kelley School of Business. We obtain thousands of data items from hundreds of data sets from dozens of federal and state sources, along with some commercial or private source data. While STATS America adds value to these data through easy access and functionality, we acknowledge the direct agency source of the data on every table, profile or map."