DCHP-1 Online
Northwestern 
adj. of or pertaining to the Northwest Territories (def. 2).
See also: Northwest Territories (def. 2) Nor'Western
- 1900 "Nine months' winter and three months late in the fall;" even so the writer had heard the North-Western year defined by one of these gentry, who are in the habit.of describing the Dominion as "that little ice-house up there."
- 1948 The scene was typically North-Western. The men wore beaded belts and moccasins, rainbow-coloured shirts and bright silk scarves and tasselled vests.
- 1900 "Nine months' winter and three months late in the fall;" even so the writer had heard the North-Western year defined by one of these gentry, who are in the habit.of describing the Dominion as "that little ice-house up there."