
      
      The CD operator was located in the NYC Yard 
      office across from the Columbus Union Station's Track #8.  The New 
      Third Street bridge is on the right.  The yard office is seeing its 
      last days as it will soon be torn down.        Photo by by Galen Gonser, May 1971.
      
      
              The operator at CD 
      was located in an upstairs south corner room in the Big Four yard office. The tower controlled New York Central (Big Four)  passenger trains into 
      and out of Columbus Union Station and freight trains between Worthington, 
      geographically to the   north,  and Olentangy tower to the  West.  The Big 
      Four freight house was behind and to the north of the yard office facing 
      High Street.  
      CD  was a manual operation using switchtenders. The Neil Avenue switchertender was located to the west of CUS and the DX switchertender on the eastside of 
      CUS. 
              The 
        DX switchtender handled the entrance to a small yard and the freight house.
              Sometime before 1946 or 47 there was an operator located at Fifth Avenue where 
        the single track Big Four line from Cleveland transitioned to double 
        track.  When  the Fifth Avenue operator 
        was eliminated a CTC panel  to remotely control the switch was installed in CD tower. When the CD operator was eliminated the CTC panel was moved to HV tower.
      
      
              Essentially CD tower controlled all the Big Four trains from Worthington 
      tower to Olentangy tower.   
       
      
      
      
      
      
      
       The NYC Yard office from 
      CUS's track #8.  The Smith Brother's Hardware Co. is in the 
      background haze.  The NYC Xplorer is on its way to Cincinnati.  
      Photo by Alex Campbell, 1956