United States. Department of the Treasury. "Tables - Personnel," in United States. Department of the Treasury. "Annual Report of the Secretary of the Treasury on the State of the Finances for the Fiscal Year Ended June 30, 1971 : Statistical Appendix," Annual Report of the Secretary of the Treasury on the State of the Finances (Fiscal Year Ended June 30, 1971) : 330-330. https://fraser.stlouisfed.org/title/194/item/5608/toc/169853 , accessed on May 8, 2024.