Safety Valve Data article from 1909

Rick A Aug 31, 2020

  1. Rick A

    Rick A TrainBoard Member

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    An interesting article, Safety Valve Data, from the July 1909 edition of STEAM magazine. 1909 Safety Valve Data    1.jpg 1909 Safety Valve Data    2.jpg 1909 Safety Valve Data    3.jpg 1909 Safety Valve Data    4.jpg 1909 Safety Valve Data    5.jpg 1909 Safety Valve Data    6.jpg 1909 Safety Valve Data    7.jpg
     
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