Although I still do not own a GPS, I decided to search out, using Mapquest screen-shots, some of the many confluences that lie near the route we would be travelling on our vacation in the summer of 2004.
This is the first one I visited - like the Fox family, I turned north onto a grid road, signed as Rugg Road, east of Elstow. I also went about a quarter of a kilometer east on the crossing roadway (didn't see any more name signs), which put me 190 meters south of the confluence (according to the Fox write-up.) As I did not have a GPS, I did not try to get any closer to the confluence, but I took the attached picture, looking back south to highway 16, also known as the Yellowhead Highway, and part of the Trans-Canada highway system. I forgot to take a picture looking north towards the confluence itself.