Appendix E: Expenditures on Statistics, and Related Research, Analysis, and Service, Twenty Federal Civilian Agencies, Fiscal 1929, 1934, 1939, 1948, 1949

Frederick C. Mills and Clarence D. Long, The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government (NBER, 1949), https://www.nber.org/books-and-chapters/statistical-agencies-federal-government-report-commission-organization-executive-branch-government/appendix-e-expenditures-statistics-and-related-research-analysis-and-service-twenty-federal-civilian.