This portion of DeBeers 1867 map shows the village of Sing Sing. The Lower Dock (on the left hand side of the map) was the earliest constructed. Upper Dock lies to the north (right), and Middle Dock is between. Remnants of the original shore line are seen inboard of the railroad embankment. Upper Dock was used as a ship yard, ferry terminal, and power generating plant. It is now part of Shattemuc Yacht Club, as marked on the map.