McCormack, George R. (George Robertson) and McElroy, Frank S. (Frank Shafer). Injuries and Accident Causes in the Longshore Industry, 1942 : Bulletin of the United States Bureau of Labor Statistics, No. 764 , Washington, D.C: G.P.O., 1944, https://fraser.stlouisfed.org/title/4248, accessed on December 20, 2024.