Above, a 2005 photograph of the west entrance to Tunnel Yard in Port Huron.  This is the former location of Tappan Tower.  [Dan Meinhard]

The Tunnel Yardmasters office in Port Huron.  [Dale Berry]  Below, a photo of the Grand Trunk Western 32nd Street Yard office, near the tunnel entrance.  This is the facility where crews went on and off duty.  October, 1989 photo.  [Charlie Whipp]