International Association of Industrial Accident Boards and Commissions and United States. Bureau of Labor Statistics. "Proceedings of the Ninth Annual Meeting of the International Association of Industrial Accident Boards and Commissions. Held at Baltimore, Md., October 9-13, 1922 : Bulletin of the United States Bureau of Labor Statistics, No. 333," Proceedings of the ... Annual Meeting of the International Association of Industrial Accident Boards and Commissions (May 1923). https://fraser.stlouisfed.org/title/3949/item/493002, accessed on September 19, 2024.