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Keywords: Ahrons (1921) Steam Locomotive Construction and Maintenance Fig11.png Stages in Forging a crank axle<br> see s Steam Locomotive Construction and Maintenance/Chapter IV for key Original Steam Locomotive Construction and Maintenance p 38 Fig 11 <br>Scan Internet Archive “ http //www archive org/details/steamlocomotivec00ahrorich 1921 E L Ahrons PD-old-auto-1923 1925 Scans from Ahrons 1921 Steam Locomotive Construction and Maintenance Steam locomotive parts Forging illustrations |