Caption: Back in the earlier days of my seeking out stations before they were demolished, I often found at the end of the subdivisions a switcher and caboose based there. Made sense. Work up and down the line and deliver cars to the nearest mainline interchange. In the case of St. Marys, perhaps to Zorra for CP traffic. This beautiful old station was last I heard the office of a local plumbing/electricians company. It is certainly a marvel that it was preserved. By 1979 I found no longer was a switcher maintained there, but rather dispatched from Woodstock. And after that, service was from a London local. The St. Marys sub is gone now, it is but a short spur off the Galt sub at Zorra, servicing the LaFarge area cement plant. My notes do not include the number of the supposed 8100 series switcher pictured.