 
          9: There are no known photos of local freights on
        
        
          the YV while they were running as extras. However,
        
        
          this photo of a mixed train leaving Merced sometime
        
        
          after June 1943 shows what might have been a typi-
        
        
          cal consist in those days. The engine has just passed
        
        
          the semaphore for the AT&SF interlocking plant (Fred
        
        
          Stoes photo).
        
        
          
            9
          
        
        
          required), each operator is also provided a job card for their
        
        
          train (Figure 8). One side provides detailed information on
        
        
          what the operator needs to do throughout the session, and
        
        
          the other side provides standard YV whistle signals (for those
        
        
          not so stressed that they forget to whistle for grade crossings,
        
        
          when approaching stations, etc.). These forms are 4¼″ x 5½″
        
        
          high, are printed back-to-back, and laminated at the local copy
        
        
          store for permanency.
        
        
          The purpose of these cards is to provide to a visiting opera-
        
        
          tor with the experience gained by a real YV engineer running