United States. President and Council of Economic Advisers (U.S.). "Distribution of Characteristics of Low and High Income Groups," in United States. President and Council of Economic Advisers (U.S.). "January 1951," Economic Report of the President (January 1951) : 235-235. https://fraser.stlouisfed.org/title/45/item/8120/toc/238291 , accessed on April 23, 2024.