The fort sign that reads Northwest Mounted Police is the actual name of a 1940 U.S. film.
Two nods to WB Looney Tunes cartoons. The avalanche gag was used in "The Iceman Ducketh." And the final scenes were a wink at "Duck Amuck," though the actual identity of the cartoonist is never revealed.
The inspector breaks the fourth wall in this short, something he seldom does.