United States. Bureau of Labor Statistics. "Union Wages and Hours: Printing Industry, July 1, 1958 : Bulletin of the United States Bureau of Labor Statistics, No. 1247,"
Union Wages and Hours : Printing Trades
(May 1959).
https://fraser.stlouisfed.org/title/3961/item/495780, accessed on May 6, 2025.
@FedFRASER