Latest design of Pennsylvania Railroad is said to reduce cost of operation and maintenance and promote simplicity and safety.


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    Title :

    The development of position-light signals


    Additional title:

    Ry. Signal Engr


    Contributors:
    Rudd, A.H. (author)

    Published in:

    Publication date :

    1921


    Size :

    3 pages


    Remarks:

    1 Fig.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Service record of position-light signals

    Rudd, A.H. | Engineering Index Backfile | 1916


    Position-light signals on Pennsylvania railroad

    Engineering Index Backfile | 1918


    "Position light" signals on the Pennsylvania

    Engineering Index Backfile | 1916


    Position-light signals for railroad service

    Rudd, A.H. | Engineering Index Backfile | 1917