United States. Bureau of Labor Statistics. Wage Chronology: Lockheed-California Company (A Division of Lockheed Aircraft Corp.) 1937-67 : Bulletin of the United States Bureau of Labor Statistics, No. 1522 , Washington, D.C: U.S. Govt. Print. Off., March 1967, https://fraser.stlouisfed.org/title/4889, accessed on November 25, 2024.