Caption: CN S13 units 8611 and 8621 bracket slug B7 on a hump set, working the Toronto Yard (later renamed MacMillan) hump as they sit on the pullback track north of Rutherford Road overpass. Two fresh-looking Dupont Canada anti-knock compound tank cars are coupled near the head end.

When the yard opened in the mid-1960's, they used S13-slug-S13 sets designated in an H1-H2-H3 configuration (note red lettering above roadnumbers), where H1 was the main unit outfitted with hump control, radio and signal equipment, H2 was the slug (converted from retired S3 units) and H3 was a trail-only unit with no special equipment onboard. The 8600's were a slightly heavier duty specified MLW S13 than the 8500's, equipped with GE 752 traction motors, full automatic transition, MU, 26L brakes and extra weight. This power was later displaced by more powerful modified GP38-2 units and new GMD slugs in the late 70's.

This area of Vaughan (the old hamlet of Maple/Sherwood) was still very rural at the time, with no Canada's Wonderland or housing developments visible north of the yard. The farm and old stone farmhouse at the upper right was about where Seafield Road is today (suburban neighbourhood built in the 90's), and the farm and barns in the distance were way up at Major Mackenzie and Jane Street (southwest corner, where the Fortinos plaza is today).

Original photographer unknown (possibly Robbin Rekiel), Dan Dell'Unto collection slide.