"The Peril of the Broken Rail": The Carriers, the Steel Companies, and Rail Technology, 1900-1945 - Aldrich, Mark (Technology and Culture, 1999)
https://katalog.adlr.link/Record/ai-55-aHR0cHM6Ly93d3cuanN0b3Iub3JnL3N0YWJsZS8yNTE0NzMwOQ