Hi J T.
What is a roof leader? The only thing I can see is the eave trough down spouts - 4 on the modern day pic, and none in the original pic.
Plus, there is a brick chimney on the right side of the bottom pic.
pdm
NomoreaTorontonian - Yes, I remember the Honey Dew stand in the Ex, just south of the Dufferin Gates on the left side of the road. They served a jug of it (probably about a litre?) in an upside down cone-shaped waxed container that had a metal ring around the top, and a tab you had to remove...