Sue..your knife find is a crooked knife.they were the main carving and woodworking tool for natives and trappers in the 17-1800's.with one you could make snowshoes,a paddle..a canoe.
and speaking of canoes!!!Swamp's find was like finding a crashed UFO to us canoe trippers.the copper tacks were all placed by hand.the tack was driven in and a metal "shoe" was held inside so the tack bend over and clinched in place.i would guess this is a Chestnut canoe.from the size and where it was found i say a Prospector model.the Hudson Bay Company bought the entire production of those canoes from Chestnut in around 1910 for the Bays use.