United States. Bureau of Labor Statistics. "Directory of National and International Labor Unions in the United States, 1955 : Structure of the AFL-CIO: Supplement 1956 : Bulletin of the United States Bureau of Labor Statistics, No. 1185,"
Directory of National Unions and Employee Associations
(1955).
https://fraser.stlouisfed.org/title/4410/item/495037/content/pdf/bls_1185_1956_supp, accessed on March 17, 2026.