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SRHA's TIES Magazine


March-April, 1994

All-Ps4 issue (almost).   The Harrison Engines - the Ps4 Pacifics, class of 1926, delivered with twelve-wheel tenders and wearing Virginia Green Where they were maintained, how their appearance evolved over the years Bill Purdie describes safety valve calibration.




Table of Contents

- Safety Valve Calibration by Bill Purdie



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