Note 744 — Chapter IV · (continued 2)

Among the Sparks maps at Cornell University are two sheets showing the Hudson River with soundings, in part at high tide and in part at half tide. They are each thirty inches long, and appear to be by the same draftsman. One of them is indorsed: "Drawn by the request and under the inspection of the Commissioners of Fortifications in the Highlands, Province of New York, by John Grenell." One shows Haverstraw Bay and Tappan Bay to a point above Dobbs Ferry, and indicates the site of Tarrytown. The other extends from Stony Point to "Polyphemes Island", below Newburgh. Constitution Island is called "Martler's Rock;" and beside Bunn's house, there is indicated at that point the block house, a "curtain fronting the river, mounting fourteen cannon", the wharf, barracks, storehouse, and commissioner's room, and landing place. West Point is opposite, unoccupied, and Moore's house is above. Fort Montgomery and a higher battery is delineated at "Poop Lopes Kill", and from it along the river towards West Point is the inscription: "By good information there is a waggon road from Poop Lopes Kill to West Point."