United States. Bureau of Labor Statistics , Finn, Joseph T. and Miller, Stanley F. Labor and Material Requirements for Public Housing Construction, 1968 : Bulletin of the United States Bureau of Labor Statistics, No. 1821 , Washington, D.C: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974, https://fraser.stlouisfed.org/title/4767, accessed on December 20, 2025.