Locomotive cyclopedia of American practice, 1947. Editor: Roy Vincent Wright, managing editor: Robert Clayton Augur. 13th ed.
R616033. Locomotive cyclopedia of American practice, 1947. Editor: Roy Vincent Wright, managing editor: Robert Clayton Augur. 13th ed. © 15Dec47; AA72224. Simmons-Boardman Publishing Corporation (PWH); 16Oct75; R616033.
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