I'm pleased that you asked that question.
And I was certainly amused by lenaitch's ironic comment about "odd" photography.
Here's my story, since you prompted me to search for the old photo:
When I returned in 1997 to have a look at my birthplace on Donlands Ave. after an absence of 42 years, the new owner allowed me inside for look around. I was so surprised to see the old, once-coal-fired furnace, that I shot this photo. It had been converted to fuel-oil about 1950.
I wonder if it's still in service today.
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