You've probably seen some great blendings of old and new photos, and I thought I'd give it a try. This one is of a Toronto Archives photo from May, 1923, and the Google Street View from the same corner. I resized the two photographs to match, then blended them using The Gimp.

The streetcar tracks and houses on the north side of McCaul haven't changed too much, but the AGO on the south is rather new. As with many photos of Toronto, the telephone and hydro wires and poles bring the two images together nicely.

The original photo, from May 22nd, 1923, is available on the City of Toronto Archives site here