Article: Safety Training Never Ends, by Elbe Watkins, for Compliance Magazine or Construction & Engineering Safety Magazine, no date, A3054-00104. Missouri Historical Society Library and Research Center.

Article: Safety Training Never Ends, by Elbe Watkins, for Compliance Magazine or Construction & Engineering Safety Magazine, no date, A3054-00104. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/16566 Accessed September 19, 2024.