" 
 ::Also, for what it's worth, the high-res topo maps of Canada (NRCan made) appear to still be available online via ""mytopo.com"", this link  should show the MT-SK-NWT ""tripoint"" marked with a survey monument symbol and the numbers ""157"". There are no topo maps at this scale just to the east, including where the NU-NWT boundary is shown on smaller scale (""lower res"") topo maps. I'm not sure why that is. The topo cutoff is marked ""District of Mackenzie"", a pre-Nunavut name whose boundary was along 102°00'W, although never surveyed on the ground.   "