University Library, University of Illinois at Urbana-Champaign

University of Illinois I-Mark
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Railroad crossing bells

  • Railroad crossing bells
    Image | 1891 | Picture ChicagoCaption: "Hall Signal Co." From text: "The Hall Signal Co. of 50 Broadway, New York, and 340 The Rookery, Chicago, are manufacturers of all kinds of Electric and Mechanical Signaling apparatus for railroads. The Hall Automatic Electric Block Signal System is in operation on twenty-one of the leading railroads of this country. On the opposite page is shown an application o...