Seventh Avenue Switching Operation, 1960

Signals are taken on both right and left side of engine; signals also received on either side of engine when working the other tracks shown in this picture because of the curvature. Tracks are referred to as Seventh Avenue. Great Northern trains must move over Northern Pacific and Milwaukee Road main lines. Engines are generally headed north in this area. Because of the close clearance it is also necessary sometimes to pass signals on the fireman's side. Note also the curvature of the tracks. The street crossing is not readily seen, but is used extensively. There is also a great deal of industrial work that goes on in this area.