United States. Bureau of Economic Analysis , Herman, Shelby W. , Katz, Arnold J. , Loebach, Leonard J. and McCulla, Stephanie H. Fixed Assets and Consumer Durable Goods in the United States, 1925-97 , Washington, D.C.: U.S. Government Printing Office, September 2003, https://fraser.stlouisfed.org/title/9180, accessed on October 11, 2024.