United States. Bureau of Labor Statistics. "Proceedings of the Eleventh Annual Convention of the Association of Governmental Labor Officials of the United States and Canada. Held at Chicago, Illinois, May 19-23, 1924 : Bulletin of the United States Bureau of Labor Statistics, No. 389," Proceedings of the ... Annual Convention of the Association of Governmental Labor Officials of United States and Canada (July 1925). https://fraser.stlouisfed.org/title/3907/item/493027, accessed on September 22, 2024.