United States. Bureau of Labor Statistics.
Wage Chronology: Railroads--Nonoperating Employees, 1920-77 : Bulletin of the United States Bureau of Labor Statistics, No. 2041 ,
Washington, D.C:
Dept. of Labor, Bureau of Labor Statistics,
May 1980, https://fraser.stlouisfed.org/title/4902,
accessed on March 20, 2025.
@FedFRASER