United States. President and Council of Economic Advisers (U.S.). "Work Stoppages Resulting From Labor-Management Disputes," in United States. President and Council of Economic Advisers (U.S.). "1960," Economic Report of the President (1960) : 148-148. https://fraser.stlouisfed.org/title/45/item/8131/toc/270012 , accessed on May 7, 2024.