Board of Water Supply. City Water Tunnel No. 1. Buildings, storage yard, and fill or cobblestones along the Hudson River with boat in foreground and General Grant National Memorial (Grant's Tomb) in distance. Possibly showing spoil from City Water Tunnel No. 1 shafts given to the Parks Department to use as fill for a waterfront park at West 129th Street, though this seems less likely. July 16, 1913.