Tête Jaune Cache magistrate William A. Jowett noted in his diary in June, 1914: “To 49 for Henning’s surprise party on his return from being married with Bel and had a good time!”
The mileage is reckoned from Yellowhead Pass along the railway.

The construction company of Palmer Brothers & Henning were contractors on the construction of the Canadian Northern Pacific Railway, and had a siding on the Grand Trunk Pacific Railway line at Mile 49, near Tête Jaune Cache, to service their camps on the Canoe River. In the years after 1912, Henningville grew into a small hamlet with a Canadian Northern Pacific warehouse and some dozen other buildings, including the Austin Brothers store, Cox’s post office, and a pool hall. The name Henningville was rarely used, because the railroaders all called the location “49.”