American Engineering Standards Committee , National Safety Council and United States. Bureau of Labor Statistics. Safety Code for Power Presses and Foot and Hand Presses : American Standard, Approved November 11, 1926, American Engineering Standards Committee : Bulletin of the United States Bureau of Labor Statistics, No. 430 , Washington, D.C: G.P.O., December 1926, https://fraser.stlouisfed.org/title/4039, accessed on November 16, 2024.