From the Windsor Daily Star – March 3, 1955:
Plans to built a new 120-bed wing at Hotel Dieu were announced today by hospital officials. They said the new unit will replace the original building, above, which will be torn down as soon as the proposed wing is completed.
The new Hotel Dieu wing being planned will be erected on Ouellette … It will be a six-story structure, with basement, and will be built alongside the wing erected in 1951. Accommodation for 30 psychiatric patients and 90 general patients is included in the plans being drawn up by J.C. Pennington, Windsor Architect.
The 1955 wing is shown above with the red base.