Estimated Expenditures and Receipts of the Post Office Department and Postal Service
United States. Bureau of the Budget and United States. Office of Management and Budget. "Estimated Expenditures and Receipts of the Post Office Department and Postal Service," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year Ending June 30, 1935," Budget of the United States Government (January 3, 1934) : 134-135. https://fraser.stlouisfed.org/title/54/item/18978/toc/429245 , accessed on May 3, 2024.