There was an interesting ad about Palm Beach. I found a few newspaper clippings, so hopefully someone will add to it. Highway 15 was first designated as a provincial highway in 1920, although its original route was quite a bit different than the route that we are familiar with today.Highway 15 was extended along the Queensway concurrently with Highway 7 from the Richmond Road Interchange to the Greenbank Road Interchange, where the highway ended at Highway 17. The concurrent route of Highway 7/15 between Carleton Place and Ottawa was discontinued in the early 1970s, when Highway 15 was truncated at Carleton Place.
So where was Palm Beach listed as being in Westboro, on the March Road on Highway 15?