sentences:  The contract for building the road was awarded to Gustavus Blin Wright, who widened the trail at a cost of $9,070.Peter Dunlevy, who operated a store at Soda Creek and Fort George, opened a store at the south end on the river in 1873, naming the portage after John Giscome, his cook.Sandford Fleming’s Canadian Pacific Railway survey investigated the portage as a railway route, and Charles Horetzky and Marcus Smith commented favourably upon its low altitude.