The blue-and-white building on the left of the Queensway in the above photo is actually on Rochester street, but formally it's part of Preston Square at 333 Preston. I knew it as the "Xerox" building, because of the large red logo on both sides of the building. I have memories of seeing it out the window of the school bus on the way to McNabb; our bus would come down this ramp and turn up Bronson:
In the last few years, the building was "Xerox"ed, and its twin was put up, seen here. Other buildings have also been put up at Preston Square, including the one along Preston with restaurants and food stores at the ground level.
More recently, the "Xerox" title was replaced with that of Sun Life Financial. In August, the building owners sought permission for a third sign on the building on the North side, and the Dalhousie Community Association chose not to oppose the request.
That third sign is currently being installed. It reads, "RBC Dominion Securities". Not very catchy from a distance.