United States. Bureau of Economic Analysis. "Personal Income - June 1957 and First Half of 1957 Compared with Like Period of 1956 : Business News Reports, OBE 57-63,"
Bureau of Economic Analysis (BEA) News Releases
(July 19, 1957).
https://fraser.stlouisfed.org/title/6148/item/594318, accessed on March 19, 2025.
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