Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Dock Engineering Records > Hull Town Docks Plans > Railway Dock: Cranes, Coal Hoists, Grain Hoppers, and Hydraulic Mains > N.E.R. Hull Docks: Foundations for 25 Tons Hydraulic Crane No. 21, North Side of Railway Dock