Northern Boundary of Mascoma's (Mascommah's) Deeds

This past weekend, the Old Redneck and I went back on the Connecticut River to find the southern boundary of the deed to Southern Vermont and New Hampshire.  We still didn't find it because we got rained out two days in a row.  We did talk to a man in Brattleboro who runs a canoe shop who said that if there was a ledge of white rocks along the Connecticut River in 1735, it was blasted away by the railroad.  I didn't even think of that, but I know the railroad did a lot of blasting when they were laying the rail beds - just ask Phineas Gage.  (But that's another story - we'll get there eventually).
     We put the canoe in the water at the Westminster canoe launch.  I believe that Dunshee Island, just a little bit downriver from the Westminster canoe launch, is the northern boundary mentioned in the deed.  The deed says, " bounded north at the mouth of a brook on the west side of said river emptying itself into said river between two and three miles above the great meadow aforesaid, against the second island in said river north of said great meadow ."  We know the Great Meadow was in what is now Putney.  This island is huge and probably permanent.  At the very middle of the island there is a brook on the west side of the island emptying right into the side of the island. You can see all this on a map of the Connecticut River, with all the canoe and boat landings, and the islands, at
http://www.crjc.org/boating/boating12.htm.

From the vantage point of the river, the island and the brook coming into the river look like this.

This is the island as you are heading toward it.

This is the very tip of the island as we were right up close to it.  It was hard to get a picture from the canoe,  I was afraid I would tip it over!

This is a picture of the brook coming into the side of the island, from the west, or Vermont, side.