The dead butterfly is incorrectly identified as a spice bush swallowtail, they look nothing like the butterfly shown. Further, a spice bush is not a rare butterfly, perhaps rarely seen in Toronto but not truly rare in itself.
Canadian Mounties weren't founded until February 1, 1920.
There is reference to Taekwondo; this martial art was developed in the 1940s and 1950s, well after this show's time period.
Sergeant Jasper Linney identifies himself as being a member of the Northwest Mounted Police, not the Canadian Mounter Police as stated in an earlier post. The Northwest Mounted Police were established in 1873. Sergeant Linney's statement is not a goof.