Directory of Labor Unions in the United States, 1950 : Bulletin of the United States Bureau of Labor Statistics, No. 980
United States. Bureau of Labor Statistics. "Directory of Labor Unions in the United States, 1950 : Bulletin of the United States Bureau of Labor Statistics, No. 980," Directory of National Unions and Employee Associations (1950). https://fraser.stlouisfed.org/title/4410/item/497573, accessed on April 19, 2024.