U.S. Census Bureau: https://www.census.gov/library/publications.html 

U.S. Small Business Administration: https://www.sba.gov/

National Bureau of Economic Research: https://www.nber.org/papers

Bureau of Economic Analysis: https://www.bea.gov

National Science Foundation: https://www.nsf.gov/statistics/reports.cfm

U.S. Energy Information Administration: https://www.eia.gov/reports/

National Agricultural Statistics Service: https://www.nass.usda.gov/Publications/

National Center for Health Statistics: https://www.cdc.gov/nchs/products/index.htm

National Center for Education Statistics: https://nces.ed.gov/pubsearch/index.asp

Federal Reserve Board: https://www.federalreserve.gov/econres.htm

National Oceanic and Atmospheric Administration: https://www.noaa.gov/science-data/reports

U.S. International Trade Commission: https://www.usitc.gov/research_and_analysis.htm

National Renewable Energy Laboratory: https://www.nrel.gov/analysis/publications.html