Will, some more info on the Milwaukee unit at Austin Manitoba: It is located at the Man. Agricultural Museum (which also has the former Northern Pacific station from Baldur Man. on site).The unit is # 92C1, serial # 883. model 7T H-4. its history: was last owned by Manitoba Hydro as # 92C1; before that, was Manitoba Hydro # 007; before that, was Manitoba Eastern (Seven Sisters Falls); before that, was owned by Water & Hill Co.; before that, was owned by Garson Quarries.
This info comes from the Canadian Trackside Guide 2005 edition. When I have a minute, I'll browse through it and see if there are any more Milwaukees in it. Hope this info is of some use to you.