Comments on: Canadian Pacific MLW S3 6550, sporting a pair of white extra flags, comes off the CP Canpa Sub with a short local job entering CN’s Oakville Sub at the Canpa interlocking (note the brick Canpa tower in the background, governing CN and CP traffic). CP had a longstanding agreement with CN for running rights over the Oakville Sub between downtown Toronto (Bathurst St./Cabin D) and Hamilton Junction, and CP locals often came from West Toronto/Lambton Yard area down the Canpa to work some of the joint-section industries along the Oakville Sub, as well as interchange cars with CN at their Mimico Yard (the trailing steel CN ice reefer and 40′ boxcar might be interchange traffic for CN). It took a bit of love to coax some colour and contrast back into this old faded Eddie Blacks colour slide. No date or date stamp was visible, but it was likely taken sometime in the late 1950′s to early 1960′s. Original photographer unknown, Dan Dell’Unto collection slide.

By: MrDan

MrDan — Mon, 18 Mar 2024 03:46:12 +0000

Thanks Terry, it makes me think mid-late 50′s if the signals still look new, as CP 6550 was built by MLW in 1956 and looks like it may have seen a bit of service.

By: terry.oshell

terry.oshell — Sun, 10 Mar 2024 13:21:32 +0000

I reviewed some signal circuit plans for Canpa dated 08/15/1952. I also have a trade publication article dated May 1953 describing the recent installation of “two extensive electric interlockings controlled from one machine” at the entrances to Mimico Yard. I hope this helps.

By: Jakob Mueller

Jakob Mueller — Sat, 09 Mar 2024 13:38:18 +0000

The signal looks new. That might be a way to narrow down the date.

By: terry.oshell

terry.oshell — Fri, 08 Mar 2024 11:53:22 +0000

Very nice.

By: Jacob Patterson

Jacob Patterson — Fri, 08 Mar 2024 04:44:44 +0000

Nice restoration on this. A great scene.