United States. President and Council of Economic Advisers (U.S.). "Average Weekly Hours in Selected Industries," in United States. President and Council of Economic Advisers (U.S.). "Midyear Report 1949," Economic Report of the President (Midyear Report 1949) : 125-125. https://fraser.stlouisfed.org/title/45/item/8117/toc/82417 , accessed on April 25, 2024.