Description of New York method for despatching mail between main post offices and their substations; comparison with European system; percentage of perfect operation during 1922-1928 given. (see also Compressed Air Mag., vol. 34, no. 11, Nov. 1929, pp. 2937-2940, 5 figs.)


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    Title :

    Pneumatic tubes to expedite air mail deliveries


    Additional title:

    Aero Digest


    Contributors:
    Wright, H. (author)

    Published in:

    Aero Digest ; 14 , n 6


    Publication date :

    1929


    Remarks:

    1 Fig.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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