United States. Bureau of Labor Statistics. "Union Scales of Wages and Hours in the Printing Trades, May 15, 1937 : Bulletin of the United States Bureau of Labor Statistics, No. 655,"
Union Wages and Hours : Printing Trades
(February 1938).
https://fraser.stlouisfed.org/title/3961/item/494362, accessed on September 11, 2024.