United States. Bureau of Labor Statistics and Small, Sylvia S. Black Americans: A Decade of Occupational Change : Bulletin of the United States Bureau of Labor Statistics, No. 1760 , Washington, D.C: For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1972, https://fraser.stlouisfed.org/title/4660, accessed on December 22, 2024.